diff --git a/krebs/2configs/binary-cache/prism.nix b/krebs/2configs/binary-cache/prism.nix
index 46b386e14..51b4a1afc 100644
--- a/krebs/2configs/binary-cache/prism.nix
+++ b/krebs/2configs/binary-cache/prism.nix
@@ -3,7 +3,7 @@
 {
   nix = {
     binaryCaches = [
-      "http://cache.prism.r"
+      "https://cache.krebsco.de"
     ];
     binaryCachePublicKeys = [
       "cache.prism-1:+S+6Lo/n27XEtvdlQKuJIcb1yO5NUqUCE2lolmTgNJU="
diff --git a/krebs/2configs/cache.nsupdate.info.nix b/krebs/2configs/cache.nsupdate.info.nix
index 056667d8c..74f345614 100644
--- a/krebs/2configs/cache.nsupdate.info.nix
+++ b/krebs/2configs/cache.nsupdate.info.nix
@@ -1,4 +1,4 @@
-{lib, ... }:
+{ pkgs, lib, ... }:
 with lib;
 let
   domain = "cache.nsupdate.info";
@@ -17,9 +17,13 @@ in {
   };
   krebs.cachecache = {
     enable = true;
-    enableSSL = false; # disable letsencrypt for testing
+    enableSSL = true; # disable letsencrypt for testing
     cacheDir = "/var/cache/nix-cache-cache";
     maxSize = "10g";
+    indexFile = pkgs.fetchurl {
+      url = "https://raw.githubusercontent.com/krebs/35c3-nixos-cache/master/index.html";
+      sha256 = "1vlngzbn0jipigspccgikd7xgixksimdl4wf8ix7d30ljx47p9n0";
+    };
 
     # assumes that the domain is reachable from the internet
     virtualHost = domain;
diff --git a/krebs/2configs/news-spam.nix b/krebs/2configs/news-spam.nix
index 88b7e1072..a8c658858 100644
--- a/krebs/2configs/news-spam.nix
+++ b/krebs/2configs/news-spam.nix
@@ -4,161 +4,161 @@
   krebs.newsbot-js.news-spam = {
     urlShortenerHost = "go.lassul.us";
     feeds = pkgs.writeText "feeds" ''
-      [SPAM]aje|http://www.aljazeera.com/Services/Rss/?PostingId=2007731105943979989|#snews
-      [SPAM]allafrica|http://allafrica.com/tools/headlines/rdf/latest/headlines.rdf|#snews
-      [SPAM]antirez|http://antirez.com/rss|#snews
-      [SPAM]archlinux|http://www.archlinux.org/feeds/news/|#snews
-      [SPAM]ars|http://feeds.arstechnica.com/arstechnica/index?format=xml|#snews
-      [SPAM]augustl|http://augustl.com/atom.xml|#snews
-      [SPAM]bbc|http://feeds.bbci.co.uk/news/rss.xml|#snews
-      [SPAM]bdt_aktuelle_themen|http://www.bundestag.de/blueprint/servlet/service/de/14154/asFeed/index.rss|#snews
-      [SPAM]bdt_drucksachen|http://www.bundestag.de/dip21rss/bundestag_drucksachen.rss|#snews
-      [SPAM]bdt_plenarproto|http://www.bundestag.de/rss_feeds/plenarprotokolle.rss|#snews
-      [SPAM]bdt_pressemitteilungen|http://www.bundestag.de/blueprint/servlet/service/de/273112/asFeed/index.rss|#snews
-      [SPAM]bitcoinpakistan|https://bitcoinspakistan.com/feed/|#snews
-      [SPAM]cancer|http://feeds.feedburner.com/ncinewsreleases?format=xml|#snews
-      [SPAM]carta|http://feeds2.feedburner.com/carta-standard-rss|#snews
-      [SPAM]catholic_news|http://feeds.feedburner.com/catholicnewsagency/dailynews|#snews
-      [SPAM]cbc_busi|http://rss.cbc.ca/lineup/business.xml|#snews
-      [SPAM]cbc_offbeat|http://www.cbc.ca/cmlink/rss-offbeat|#snews
-      [SPAM]cbc_pol|http://rss.cbc.ca/lineup/politics.xml|#snews
-      [SPAM]cbc_tech|http://rss.cbc.ca/lineup/technology.xml|#snews
-      [SPAM]cbc_top|http://rss.cbc.ca/lineup/topstories.xml|#snews
-      [SPAM]ccc|http://www.ccc.de/rss/updates.rdf|#snews
-      [SPAM]chan_biz|http://boards.4chan.org/biz/index.rss|#snews
-      [SPAM]chan_g|http://boards.4chan.org/g/index.rss|#snews
-      [SPAM]chan_int|http://boards.4chan.org/int/index.rss|#snews
-      [SPAM]chan_sci|http://boards.4chan.org/sci/index.rss|#snews
-      [SPAM]chan_x|http://boards.4chan.org/x/index.rss|#snews
-      [SPAM]c|http://www.tempolimit-lichtgeschwindigkeit.de/news.xml|#snews
-      [SPAM]cryptogon|http://www.cryptogon.com/?feed=rss2|#snews
-      [SPAM]csm|http://rss.csmonitor.com/feeds/csm|#snews
-      [SPAM]csm_world|http://rss.csmonitor.com/feeds/world|#snews
-      [SPAM]danisch|http://www.danisch.de/blog/feed/|#snews
-      [SPAM]dod|http://www.defense.gov/news/afps2.xml|#snews
-      [SPAM]dwn|http://deutsche-wirtschafts-nachrichten.de/feed/customfeed/|#snews
-      [SPAM]ecat|http://ecat.com/feed|#snews
-      [SPAM]eia_press|http://www.eia.gov/rss/press_rss.xml|#snews
-      [SPAM]eia_today|http://www.eia.gov/rss/todayinenergy.xml|#snews
-      [SPAM]embargowatch|https://embargowatch.wordpress.com/feed/|#snews
-      [SPAM]ethereum-comments|http://blog.ethereum.org/comments/feed|#snews
-      [SPAM]ethereum|http://blog.ethereum.org/feed|#snews
-      [SPAM]europa_ric|http://ec.europa.eu/research/infocentre/rss/infocentre-rss.xml|#snews
-      [SPAM]eu_survei|http://www.eurosurveillance.org/public/RSSFeed/RSS.aspx|#snews
-      [SPAM]exploitdb|http://www.exploit-db.com/rss.xml|#snews
-      [SPAM]fars|http://www.farsnews.com/rss.php|#snews #test
-      [SPAM]faz_feui|http://www.faz.net/rss/aktuell/feuilleton/|#snews
-      [SPAM]faz_politik|http://www.faz.net/rss/aktuell/politik/|#snews
-      [SPAM]faz_wirtschaft|http://www.faz.net/rss/aktuell/wirtschaft/|#snews
-      [SPAM]fbi|https://www.fbi.gov/news/rss.xml|#snews
-      [SPAM]fedreserve|http://www.federalreserve.gov/feeds/press_all.xml|#snews
-      [SPAM]fefe|http://blog.fefe.de/rss.xml|#snews
-      [SPAM]forbes|http://www.forbes.com/forbes/feed2/|#snews
-      [SPAM]forbes_realtime|http://www.forbes.com/real-time/feed2/|#snews
-      [SPAM]fox|http://feeds.foxnews.com/foxnews/latest|#snews
-      [SPAM]geheimorganisation|http://geheimorganisation.org/feed/|#snews
-      [SPAM]GerForPol|http://www.german-foreign-policy.com/de/news/rss-2.0|#snews
-      [SPAM]gmanet|http://www.gmanetwork.com/news/rss/news|#snews
-      [SPAM]golem|http://rss.golem.de/rss.php|#snews
-      [SPAM]google|http://news.google.com/?output=rss|#snews
-      [SPAM]greenpeace|http://feeds.feedburner.com/GreenpeaceNews|#snews
-      [SPAM]guardian_uk|http://feeds.theguardian.com/theguardian/uk-news/rss|#snews
-      [SPAM]gulli|http://ticker.gulli.com/rss/|#snews
-      [SPAM]hackernews|https://news.ycombinator.com/rss|#snews
-      [SPAM]handelsblatt|http://www.handelsblatt.com/contentexport/feed/schlagzeilen|#snews
-      [SPAM]heise|https://www.heise.de/newsticker/heise-atom.xml|#snews
-      [SPAM]hindu_business|http://www.thehindubusinessline.com/?service=rss|#snews
-      [SPAM]hindu|http://www.thehindu.com/?service=rss|#snews
-      [SPAM]ign|http://feeds.ign.com/ign/all|#snews
-      [SPAM]independent|http://www.independent.com/rss/headlines/|#snews
-      [SPAM]indymedia|https://de.indymedia.org/rss.xml|#snews
-      [SPAM]info_libera|http://www.informationliberation.com/rss.xml|#snews
-      [SPAM]klagen-gegen-rundfuckbeitrag|http://klagen-gegen-rundfunkbeitrag.blogspot.com/feeds/posts/default|#snews
-      [SPAM]korea_herald|http://www.koreaherald.com/rss_xml.php|#snews
-      [SPAM]linuxinsider|http://www.linuxinsider.com/perl/syndication/rssfull.pl|#snews
-      [SPAM]lisp|http://planet.lisp.org/rss20.xml|#snews
-      [SPAM]liveleak|http://www.liveleak.com/rss|#snews
-      [SPAM]lolmythesis|http://lolmythesis.com/rss|#snews
-      [SPAM]LtU|http://lambda-the-ultimate.org/rss.xml|#snews
-      [SPAM]lukepalmer|http://lukepalmer.wordpress.com/feed/|#snews
-      [SPAM]mit|http://web.mit.edu/newsoffice/rss-feeds.feed?type=rss|#snews
-      [SPAM]mongrel2_master|https://github.com/zedshaw/mongrel2/commits/master.atom|#snews
-      [SPAM]nds|http://www.nachdenkseiten.de/?feed=atom|#snews
-      [SPAM]netzpolitik|https://netzpolitik.org/feed/|#snews
-      [SPAM]newsbtc|http://newsbtc.com/feed/|#snews
-      [SPAM]nnewsg|http://www.net-news-global.net/rss/rssfeed.xml|#snews
-      [SPAM]npr_busi|http://www.npr.org/rss/rss.php?id=1006|#snews
-      [SPAM]npr_headlines|http://www.npr.org/rss/rss.php?id=1001|#snews
-      [SPAM]npr_pol|http://www.npr.org/rss/rss.php?id=1012|#snews
-      [SPAM]npr_world|http://www.npr.org/rss/rss.php?id=1004|#snews
-      [SPAM]nsa|https://www.nsa.gov/rss.xml|#snews #bullerei
-      [SPAM]nytimes|http://rss.nytimes.com/services/xml/rss/nyt/World.xml|#snews
-      [SPAM]painload|https://github.com/krebs/painload/commits/master.atom|#snews
-      [SPAM]phys|http://phys.org/rss-feed/|#snews
-      [SPAM]piraten|https://www.piratenpartei.de/feed/|#snews
-      [SPAM]polizei_berlin|http://www.berlin.de/polizei/presse-fahndung/_rss_presse.xml|#snews
-      [SPAM]presse_polizei|http://www.presseportal.de/rss/polizei.rss2|#snews
-      [SPAM]presseportal|http://www.presseportal.de/rss/presseportal.rss2|#snews
-      [SPAM]prisonplanet|http://prisonplanet.com/feed.rss|#snews
-      [SPAM]rawstory|http://www.rawstory.com/rs/feed/|#snews
-      [SPAM]reddit_4chan|http://www.reddit.com/r/4chan/new/.rss|#snews
-      [SPAM]reddit_anticonsum|http://www.reddit.com/r/Anticonsumption/new/.rss|#snews
-      [SPAM]reddit_btc|http://www.reddit.com/r/Bitcoin/new/.rss|#snews
-      [SPAM]reddit_consp|http://reddit.com/r/conspiracy/.rss|#snews
-      [SPAM]reddit_haskell|http://www.reddit.com/r/haskell/.rss|#snews
-      [SPAM]reddit_nix|http://www.reddit.com/r/nixos/.rss|#snews
-      [SPAM]reddit_prog|http://www.reddit.com/r/programming/new/.rss|#snews
-      [SPAM]reddit_sci|http://www.reddit.com/r/science/.rss|#snews
-      [SPAM]reddit_tech|http://www.reddit.com/r/technology/.rss|#snews
-      [SPAM]reddit_tpp|http://www.reddit.com/r/twitchplayspokemon/.rss|#snews
-      [SPAM]reddit_world|http://www.reddit.com/r/worldnews/.rss|#snews
-      [SPAM]r-ethereum|http://www.reddit.com/r/ethereum/.rss|#snews
-      [SPAM]reuters|http://feeds.reuters.com/Reuters/worldNews|#snews
-      [SPAM]reuters-odd|http://feeds.reuters.com/reuters/oddlyEnoughNews?format=xml|#snews
-      [SPAM]rt|http://rt.com/rss/news/|#snews
-      [SPAM]schallurauch|http://feeds.feedburner.com/SchallUndRauch|#snews
-      [SPAM]sciencemag|http://news.sciencemag.org/rss/current.xml|#snews
-      [SPAM]scmp|http://www.scmp.com/rss/91/feed|#snews
-      [SPAM]sec-db|http://feeds.security-database.com/SecurityDatabaseToolsWatch|#snews
-      [SPAM]shackspace|http://shackspace.de/atom.xml|#snews
-      [SPAM]shz_news|http://www.shz.de/nachrichten/newsticker/rss|#snews
-      [SPAM]sky_busi|http://feeds.skynews.com/feeds/rss/business.xml|#snews
-      [SPAM]sky_pol|http://feeds.skynews.com/feeds/rss/politics.xml|#snews
-      [SPAM]sky_strange|http://feeds.skynews.com/feeds/rss/strange.xml|#snews
-      [SPAM]sky_tech|http://feeds.skynews.com/feeds/rss/technology.xml|#snews
-      [SPAM]sky_world|http://feeds.skynews.com/feeds/rss/world.xml|#snews
-      [SPAM]slashdot|http://rss.slashdot.org/Slashdot/slashdot|#snews
-      [SPAM]slate|http://feeds.slate.com/slate|#snews
-      [SPAM]spiegel_eil|http://www.spiegel.de/schlagzeilen/eilmeldungen/index.rss|#snews
-      [SPAM]spiegel_top|http://www.spiegel.de/schlagzeilen/tops/index.rss|#snews
-      [SPAM]standardmedia_ke|http://www.standardmedia.co.ke/rss/headlines.php|#snews
-      [SPAM]stern|http://www.stern.de/feed/standard/all/|#snews
-      [SPAM]stz|http://www.stuttgarter-zeitung.de/rss/topthemen.rss.feed|#snews
-      [SPAM]sz_politik|http://rss.sueddeutsche.de/rss/Politik|#snews
-      [SPAM]sz_wirtschaft|http://rss.sueddeutsche.de/rss/Wirtschaft|#snews
-      [SPAM]sz_wissen|http://rss.sueddeutsche.de/rss/Wissen|#snews
-      [SPAM]tagesschau|http://www.tagesschau.de/newsticker.rdf|#snews
-      [SPAM]taz|http://taz.de/Themen-des-Tages/!p15;rss/|#snews
-      [SPAM]telegraph|http://www.telegraph.co.uk/rss.xml|#snews
-      [SPAM]telepolis|http://www.heise.de/tp/rss/news-atom.xml|#snews
-      [SPAM]the_insider|http://www.theinsider.org/rss/news/headlines-xml.asp|#snews
-      [SPAM]tigsource|http://www.tigsource.com/feed/|#snews
-      [SPAM]tinc|http://tinc-vpn.org/news/index.rss|#snews
-      [SPAM]torr_bits|http://feeds.feedburner.com/TorrentfreakBits|#snews
-      [SPAM]torrentfreak|http://feeds.feedburner.com/Torrentfreak|#snews
-      [SPAM]torr_news|http://feed.torrentfreak.com/Torrentfreak/|#snews
-      [SPAM]travel_warnings|http://feeds.travel.state.gov/ca/travelwarnings-alerts|#snews
-      [SPAM]un_afr|http://www.un.org/apps/news/rss/rss_africa.asp|#snews
-      [SPAM]un_am|http://www.un.org/apps/news/rss/rss_americas.asp|#snews
-      [SPAM]un_eu|http://www.un.org/apps/news/rss/rss_europe.asp|#snews
-      [SPAM]un_me|http://www.un.org/apps/news/rss/rss_mideast.asp|#snews
-      [SPAM]un_pac|http://www.un.org/apps/news/rss/rss_asiapac.asp|#snews
-      [SPAM]un_top|http://www.un.org/apps/news/rss/rss_top.asp|#snews
-      [SPAM]us_math_society|http://www.ams.org/cgi-bin/content/news_items.cgi?rss=1|#snews
-      [SPAM]vimperator|https://sites.google.com/a/vimperator.org/www/blog/posts.xml|#snews
-      [SPAM]weechat|http://dev.weechat.org/feed/atom|#snews
-      [SPAM]xkcd|https://xkcd.com/rss.xml|#snews
-      [SPAM]zdnet|http://www.zdnet.com/news/rss.xml|#snews
+      _aje|http://www.aljazeera.com/Services/Rss/?PostingId=2007731105943979989|#snews
+      _allafrica|http://allafrica.com/tools/headlines/rdf/latest/headlines.rdf|#snews
+      _antirez|http://antirez.com/rss|#snews
+      _archlinux|http://www.archlinux.org/feeds/news/|#snews
+      _ars|http://feeds.arstechnica.com/arstechnica/index?format=xml|#snews
+      _augustl|http://augustl.com/atom.xml|#snews
+      _bbc|http://feeds.bbci.co.uk/news/rss.xml|#snews
+      _bdt_aktuelle_themen|http://www.bundestag.de/blueprint/servlet/service/de/14154/asFeed/index.rss|#snews
+      _bdt_drucksachen|http://www.bundestag.de/dip21rss/bundestag_drucksachen.rss|#snews
+      _bdt_plenarproto|http://www.bundestag.de/rss_feeds/plenarprotokolle.rss|#snews
+      _bdt_pressemitteilungen|http://www.bundestag.de/blueprint/servlet/service/de/273112/asFeed/index.rss|#snews
+      _bitcoinpakistan|https://bitcoinspakistan.com/feed/|#snews
+      _cancer|http://feeds.feedburner.com/ncinewsreleases?format=xml|#snews
+      _carta|http://feeds2.feedburner.com/carta-standard-rss|#snews
+      _catholic_news|http://feeds.feedburner.com/catholicnewsagency/dailynews|#snews
+      _cbc_busi|http://rss.cbc.ca/lineup/business.xml|#snews
+      _cbc_offbeat|http://www.cbc.ca/cmlink/rss-offbeat|#snews
+      _cbc_pol|http://rss.cbc.ca/lineup/politics.xml|#snews
+      _cbc_tech|http://rss.cbc.ca/lineup/technology.xml|#snews
+      _cbc_top|http://rss.cbc.ca/lineup/topstories.xml|#snews
+      _ccc|http://www.ccc.de/rss/updates.rdf|#snews
+      _chan_biz|http://boards.4chan.org/biz/index.rss|#snews
+      _chan_g|http://boards.4chan.org/g/index.rss|#snews
+      _chan_int|http://boards.4chan.org/int/index.rss|#snews
+      _chan_sci|http://boards.4chan.org/sci/index.rss|#snews
+      _chan_x|http://boards.4chan.org/x/index.rss|#snews
+      _c|http://www.tempolimit-lichtgeschwindigkeit.de/news.xml|#snews
+      _cryptogon|http://www.cryptogon.com/?feed=rss2|#snews
+      _csm|http://rss.csmonitor.com/feeds/csm|#snews
+      _csm_world|http://rss.csmonitor.com/feeds/world|#snews
+      _danisch|http://www.danisch.de/blog/feed/|#snews
+      _dod|http://www.defense.gov/news/afps2.xml|#snews
+      _dwn|http://deutsche-wirtschafts-nachrichten.de/feed/customfeed/|#snews
+      _ecat|http://ecat.com/feed|#snews
+      _eia_press|http://www.eia.gov/rss/press_rss.xml|#snews
+      _eia_today|http://www.eia.gov/rss/todayinenergy.xml|#snews
+      _embargowatch|https://embargowatch.wordpress.com/feed/|#snews
+      _ethereum-comments|http://blog.ethereum.org/comments/feed|#snews
+      _ethereum|http://blog.ethereum.org/feed|#snews
+      _europa_ric|http://ec.europa.eu/research/infocentre/rss/infocentre-rss.xml|#snews
+      _eu_survei|http://www.eurosurveillance.org/public/RSSFeed/RSS.aspx|#snews
+      _exploitdb|http://www.exploit-db.com/rss.xml|#snews
+      _fars|http://www.farsnews.com/rss.php|#snews #test
+      _faz_feui|http://www.faz.net/rss/aktuell/feuilleton/|#snews
+      _faz_politik|http://www.faz.net/rss/aktuell/politik/|#snews
+      _faz_wirtschaft|http://www.faz.net/rss/aktuell/wirtschaft/|#snews
+      _fbi|https://www.fbi.gov/news/rss.xml|#snews
+      _fedreserve|http://www.federalreserve.gov/feeds/press_all.xml|#snews
+      _fefe|http://blog.fefe.de/rss.xml|#snews
+      _forbes|http://www.forbes.com/forbes/feed2/|#snews
+      _forbes_realtime|http://www.forbes.com/real-time/feed2/|#snews
+      _fox|http://feeds.foxnews.com/foxnews/latest|#snews
+      _geheimorganisation|http://geheimorganisation.org/feed/|#snews
+      _GerForPol|http://www.german-foreign-policy.com/de/news/rss-2.0|#snews
+      _gmanet|http://www.gmanetwork.com/news/rss/news|#snews
+      _golem|http://rss.golem.de/rss.php|#snews
+      _google|http://news.google.com/?output=rss|#snews
+      _greenpeace|http://feeds.feedburner.com/GreenpeaceNews|#snews
+      _guardian_uk|http://feeds.theguardian.com/theguardian/uk-news/rss|#snews
+      _gulli|http://ticker.gulli.com/rss/|#snews
+      _hackernews|https://news.ycombinator.com/rss|#snews
+      _handelsblatt|http://www.handelsblatt.com/contentexport/feed/schlagzeilen|#snews
+      _heise|https://www.heise.de/newsticker/heise-atom.xml|#snews
+      _hindu_business|http://www.thehindubusinessline.com/?service=rss|#snews
+      _hindu|http://www.thehindu.com/?service=rss|#snews
+      _ign|http://feeds.ign.com/ign/all|#snews
+      _independent|http://www.independent.com/rss/headlines/|#snews
+      _indymedia|https://de.indymedia.org/rss.xml|#snews
+      _info_libera|http://www.informationliberation.com/rss.xml|#snews
+      _klagen-gegen-rundfuckbeitrag|http://klagen-gegen-rundfunkbeitrag.blogspot.com/feeds/posts/default|#snews
+      _korea_herald|http://www.koreaherald.com/rss_xml.php|#snews
+      _linuxinsider|http://www.linuxinsider.com/perl/syndication/rssfull.pl|#snews
+      _lisp|http://planet.lisp.org/rss20.xml|#snews
+      _liveleak|http://www.liveleak.com/rss|#snews
+      _lolmythesis|http://lolmythesis.com/rss|#snews
+      _LtU|http://lambda-the-ultimate.org/rss.xml|#snews
+      _lukepalmer|http://lukepalmer.wordpress.com/feed/|#snews
+      _mit|http://web.mit.edu/newsoffice/rss-feeds.feed?type=rss|#snews
+      _mongrel2_master|https://github.com/zedshaw/mongrel2/commits/master.atom|#snews
+      _nds|http://www.nachdenkseiten.de/?feed=atom|#snews
+      _netzpolitik|https://netzpolitik.org/feed/|#snews
+      _newsbtc|http://newsbtc.com/feed/|#snews
+      _nnewsg|http://www.net-news-global.net/rss/rssfeed.xml|#snews
+      _npr_busi|http://www.npr.org/rss/rss.php?id=1006|#snews
+      _npr_headlines|http://www.npr.org/rss/rss.php?id=1001|#snews
+      _npr_pol|http://www.npr.org/rss/rss.php?id=1012|#snews
+      _npr_world|http://www.npr.org/rss/rss.php?id=1004|#snews
+      _nsa|https://www.nsa.gov/rss.xml|#snews #bullerei
+      _nytimes|http://rss.nytimes.com/services/xml/rss/nyt/World.xml|#snews
+      _painload|https://github.com/krebs/painload/commits/master.atom|#snews
+      _phys|http://phys.org/rss-feed/|#snews
+      _piraten|https://www.piratenpartei.de/feed/|#snews
+      _polizei_berlin|http://www.berlin.de/polizei/presse-fahndung/_rss_presse.xml|#snews
+      _presse_polizei|http://www.presseportal.de/rss/polizei.rss2|#snews
+      _presseportal|http://www.presseportal.de/rss/presseportal.rss2|#snews
+      _prisonplanet|http://prisonplanet.com/feed.rss|#snews
+      _rawstory|http://www.rawstory.com/rs/feed/|#snews
+      _reddit_4chan|http://www.reddit.com/r/4chan/new/.rss|#snews
+      _reddit_anticonsum|http://www.reddit.com/r/Anticonsumption/new/.rss|#snews
+      _reddit_btc|http://www.reddit.com/r/Bitcoin/new/.rss|#snews
+      _reddit_consp|http://reddit.com/r/conspiracy/.rss|#snews
+      _reddit_haskell|http://www.reddit.com/r/haskell/.rss|#snews
+      _reddit_nix|http://www.reddit.com/r/nixos/.rss|#snews
+      _reddit_prog|http://www.reddit.com/r/programming/new/.rss|#snews
+      _reddit_sci|http://www.reddit.com/r/science/.rss|#snews
+      _reddit_tech|http://www.reddit.com/r/technology/.rss|#snews
+      _reddit_tpp|http://www.reddit.com/r/twitchplayspokemon/.rss|#snews
+      _reddit_world|http://www.reddit.com/r/worldnews/.rss|#snews
+      _r-ethereum|http://www.reddit.com/r/ethereum/.rss|#snews
+      _reuters|http://feeds.reuters.com/Reuters/worldNews|#snews
+      _reuters-odd|http://feeds.reuters.com/reuters/oddlyEnoughNews?format=xml|#snews
+      _rt|http://rt.com/rss/news/|#snews
+      _schallurauch|http://feeds.feedburner.com/SchallUndRauch|#snews
+      _sciencemag|http://news.sciencemag.org/rss/current.xml|#snews
+      _scmp|http://www.scmp.com/rss/91/feed|#snews
+      _sec-db|http://feeds.security-database.com/SecurityDatabaseToolsWatch|#snews
+      _shackspace|http://shackspace.de/atom.xml|#snews
+      _shz_news|http://www.shz.de/nachrichten/newsticker/rss|#snews
+      _sky_busi|http://feeds.skynews.com/feeds/rss/business.xml|#snews
+      _sky_pol|http://feeds.skynews.com/feeds/rss/politics.xml|#snews
+      _sky_strange|http://feeds.skynews.com/feeds/rss/strange.xml|#snews
+      _sky_tech|http://feeds.skynews.com/feeds/rss/technology.xml|#snews
+      _sky_world|http://feeds.skynews.com/feeds/rss/world.xml|#snews
+      _slashdot|http://rss.slashdot.org/Slashdot/slashdot|#snews
+      _slate|http://feeds.slate.com/slate|#snews
+      _spiegel_eil|http://www.spiegel.de/schlagzeilen/eilmeldungen/index.rss|#snews
+      _spiegel_top|http://www.spiegel.de/schlagzeilen/tops/index.rss|#snews
+      _standardmedia_ke|http://www.standardmedia.co.ke/rss/headlines.php|#snews
+      _stern|http://www.stern.de/feed/standard/all/|#snews
+      _stz|http://www.stuttgarter-zeitung.de/rss/topthemen.rss.feed|#snews
+      _sz_politik|http://rss.sueddeutsche.de/rss/Politik|#snews
+      _sz_wirtschaft|http://rss.sueddeutsche.de/rss/Wirtschaft|#snews
+      _sz_wissen|http://rss.sueddeutsche.de/rss/Wissen|#snews
+      _tagesschau|http://www.tagesschau.de/newsticker.rdf|#snews
+      _taz|http://taz.de/Themen-des-Tages/!p15;rss/|#snews
+      _telegraph|http://www.telegraph.co.uk/rss.xml|#snews
+      _telepolis|http://www.heise.de/tp/rss/news-atom.xml|#snews
+      _the_insider|http://www.theinsider.org/rss/news/headlines-xml.asp|#snews
+      _tigsource|http://www.tigsource.com/feed/|#snews
+      _tinc|http://tinc-vpn.org/news/index.rss|#snews
+      _torr_bits|http://feeds.feedburner.com/TorrentfreakBits|#snews
+      _torrentfreak|http://feeds.feedburner.com/Torrentfreak|#snews
+      _torr_news|http://feed.torrentfreak.com/Torrentfreak/|#snews
+      _travel_warnings|http://feeds.travel.state.gov/ca/travelwarnings-alerts|#snews
+      _un_afr|http://www.un.org/apps/news/rss/rss_africa.asp|#snews
+      _un_am|http://www.un.org/apps/news/rss/rss_americas.asp|#snews
+      _un_eu|http://www.un.org/apps/news/rss/rss_europe.asp|#snews
+      _un_me|http://www.un.org/apps/news/rss/rss_mideast.asp|#snews
+      _un_pac|http://www.un.org/apps/news/rss/rss_asiapac.asp|#snews
+      _un_top|http://www.un.org/apps/news/rss/rss_top.asp|#snews
+      _us_math_society|http://www.ams.org/cgi-bin/content/news_items.cgi?rss=1|#snews
+      _vimperator|https://sites.google.com/a/vimperator.org/www/blog/posts.xml|#snews
+      _weechat|http://dev.weechat.org/feed/atom|#snews
+      _xkcd|https://xkcd.com/rss.xml|#snews
+      _zdnet|http://www.zdnet.com/news/rss.xml|#snews
     '';
   };
 }
diff --git a/krebs/3modules/Reaktor.nix b/krebs/3modules/Reaktor.nix
index 677b6f7b8..669483f3c 100644
--- a/krebs/3modules/Reaktor.nix
+++ b/krebs/3modules/Reaktor.nix
@@ -8,7 +8,7 @@ let
 
   out = {
     options.krebs.Reaktor = api;
-    config = imp;
+    config = mkIf (cfg != {}) imp;
   };
 
   api = mkOption {
diff --git a/krebs/3modules/bepasty-server.nix b/krebs/3modules/bepasty-server.nix
index dd29a4e17..e12367b7c 100644
--- a/krebs/3modules/bepasty-server.nix
+++ b/krebs/3modules/bepasty-server.nix
@@ -143,12 +143,12 @@ let
     ) cfg.servers;
 
     users.extraUsers.bepasty = {
-      uid = genid "bepasty";
+      uid = genid_uint31 "bepasty";
       group = "bepasty";
       home = "/var/lib/bepasty-server";
     };
     users.extraGroups.bepasty = {
-      gid = genid "bepasty";
+      gid = genid_uint31 "bepasty";
     };
   };
 
diff --git a/krebs/3modules/cachecache.nix b/krebs/3modules/cachecache.nix
index 989320480..2c2d07ff5 100644
--- a/krebs/3modules/cachecache.nix
+++ b/krebs/3modules/cachecache.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ pkgs, config, lib, ... }:
 
 
 # fork of https://gist.github.com/rycee/f495fc6cc4130f155e8b670609a1e57b
@@ -59,15 +59,6 @@ in
         '';
       };
 
-      # webRoot = mkOption {
-      #   type = types.str;
-      #   default = "/";
-      #   description = ''
-      #     Directory on virtual host that serves the cache. Must end in
-      #     <literal>/</literal>.
-      #   '';
-      # };
-
       resolver = mkOption {
         type = types.str;
         description = "Address of DNS resolver.";
@@ -82,6 +73,13 @@ in
           Where nginx should store cached data.
         '';
       };
+      indexFile = mkOption {
+        type = types.path;
+        default = pkgs.writeText "myindex" "<html>hello world</html>";
+        description = ''
+          Path to index.html file.
+        '';
+      };
 
       maxSize = mkOption {
         type = types.str;
@@ -98,6 +96,7 @@ in
     systemd.services.nginx.preStart = ''
       mkdir -p ${cfg.cacheDir} /srv/www/nix-cache-cache
       chmod 700 ${cfg.cacheDir} /srv/www/nix-cache-cache
+      ln -fs ${cfg.indexFile} /srv/www/nix-cache-cache/index.html
       chown ${nginxCfg.user}:${nginxCfg.group} \
         ${cfg.cacheDir} /srv/www/nix-cache-cache
     '';
@@ -143,6 +142,7 @@ in
         locations."/" =
         {
           root = "/srv/www/nix-cache-cache";
+          index = "index.html";
           extraConfig = ''
             expires max;
             add_header Cache-Control $nix_cache_cache_header always;
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index 24cbd9cc9..2e7c61fb5 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -109,6 +109,7 @@ let
   };
 
   imp = lib.mkMerge [
+    { krebs = import ./external { inherit config; }; }
     { krebs = import ./jeschli { inherit config; }; }
     { krebs = import ./krebs  { inherit config; }; }
     { krebs = import ./lass   { inherit config; }; }
@@ -121,6 +122,7 @@ let
         shack = "hosts";
         i = "hosts";
         r = "hosts";
+        w = "hosts";
       };
 
       krebs.users = {
diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
new file mode 100644
index 000000000..02d28ddc8
--- /dev/null
+++ b/krebs/3modules/external/default.nix
@@ -0,0 +1,306 @@
+with import <stockholm/lib>;
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    ci = false;
+    external = true;
+    monitoring = false;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "external" { inherit hostName; }).address;
+  });
+
+in {
+  hosts = mapAttrs hostDefaults {
+    sokrateslaptop = {
+      owner = config.krebs.users.sokratess;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.142.104";
+          aliases = [
+            "sokrateslaptop.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIIBCgKCAQEA0EMbBv5NCSns4V/VR/NJHhwe2qNLUYjWWtCDY4zDuoiJdm3JNZJ2
+            t0iKNxFwd6Mmg3ahAlndsH4FOjOBGBQCgBG25VRnQgli1sypI/gYTsSgIWHVIRoZ
+            rgrng0K3oyJ6FuTP+nH1rd7UAYkrOQolXQBY+LqAbxOVjiJl+DpbAXIxCIs5TBeW
+            egtBiXZ1S53Lv5EGFXug716XlgZLHjw7PzRLJXSlvUAIRZj0Sjq4UD9VrhazM9s5
+            aDuxJIdknccEEXm6NK7a51hU/o8L+T0IUpZxhaXOdi6fvO/y3TbffKb1yRTbN0/V
+            VBjBh18Le7h0SmAEED5tz7NOCrAjMZQtJQIDAQAB
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    kruck = {
+      owner = config.krebs.users.palo;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.29.201";
+          aliases = [
+            "kruck.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAxcui2sirT5YY9HrSauj9nSF3AxUnfd2CCEGyzmzbi5+qw8T9jdNh
+            QcIG3s+eC3uEy6leL/eeR4NjVtQRt8CDmhGul95Vs3I1jx9gdvYR+HOatPgK0YQA
+            EFwk0jv8Z8tOc87X1qwA00Gb+25+kAzsf+8+4HQuh/szSGje3RBmBFkUyNHh8R0U
+            uzs8NSTRdN+edvYtzjnYcE1sq59HFBPkVcJNp5I3qYTp6m9SxGHMvsq6vRpNnjq/
+            /RZVBhnPDBlgxia/aVfVQKeEOHZV3svLvsJzGDrUWsJCEvF0YwW4bvohY19myTNR
+            9lXo/VFx86qAkY09il2OloE7iu5cA2RV+FWwLeajE9vIDA06AD7nECVgthNoZd1s
+            qsDfuu3WqlpyBmr6XhRkYOFFE4xVLrZ0vItGYlgR2UPp9TjHrzfsedoyJoJAbhMH
+            gDlFgiHlAy1fhG1sCX5883XmSjWn0eJwmZ2O9sZNBP5dxfGUXg/x8NWfQj7E1lqj
+            jQ59UC6yiz7bFtObKvpdn1D4tPbqBvndZzn19U/3wKo+cCBRjtLmUD7HQHC65dCs
+            fAiCFvUTVMM3SNDvYChm0U/KGjZZFwQ+cCLj1JNVPet2C+CJ0qI2muXOnCuv/0o5
+            TBZrrHMpj6Th8AiOgeMVuxzjX1FsmAThWj9Qp/jQu6O0qvnkUNaU7I8CAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    scardanelli = {
+      owner = config.krebs.users.kmein;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.2.2";
+          aliases = [
+            "scardanelli.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN PUBLIC KEY-----
+            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxM93+YgGhk5PtcOrE7E/
+            MAOMF/c9c4Ps6m8xd4VZat3ru07yH8Yfox1yM6jwZBwIwK2AC9DK0/k3WIvZQUge
+            UKSTiXpE4z/0ceaesugLQ9KTjUty1e/2vQ78bOqmd7EG3aPV2QsjlgpjJ6qQxeFi
+            kjlHoFi9NNBLVkIyaAdlAhwvZuYFmAY/FQEmm6+XOb+Nmo+fccQlG6+NinA2GOg0
+            gdY/dKYxa04Ns/yu7TK3sBQIt6cg/YUk9VpyC4yIIRPMdyVcAPz3Kd2mp23fhSvx
+            we80prWXYtdct4vXaBZm9FUY5y4SL3c0TEScuM73VXtr2tPAxjD5W4XMWhrjnIiY
+            QzoyAquVS9rR4fCaoP+hw3Tjy7Att3voa/YlHEDaendxjZ3nuO0m0vcgOa+SfCNm
+            SqLsqb8to1y8yJ8LnR2og4MbtasxqSe1L9VLTsb4k/AGfmAdlqyG4Q1h5pCBh0GL
+            2F6FbYHzwrwqBvVCz4DTPygPtta5o7THpP50PgojtzNLm1yKWpfdcWeMgGQJSI0f
+            m3yenytM1u0jjw7KbBG79Z3etFNIYZy4Uq/dryEJnwpTFls+zZn9Q3tDEnO4a38Q
+            FgzV0VLQpRM/uf1powSDzoWp+/JYgB9464OKcTsSlVJpi3crxF86xFqqc39U2/u5
+            lM61fOMcVW1KREdWypiDtu8CAwEAAQ==
+            -----END PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    homeros = {
+      owner = config.krebs.users.kmein;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.2.1";
+          aliases = [
+            "homeros.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN PUBLIC KEY-----
+            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAoZq6BwB6rV6EfTf8PWOd
+            ZhEWig5VcK1FcH0qi7KgojAhGSHhWmtFlvRSoGpQrSFRN0g5eTnrrguuTiIs6djc
+            6Al9HMqwSD1IOkqFm8jM4aG5NqjYg3in6blOFarBEOglfnsYHiUPt6T4fERxRZ9v
+            RguEWrishNMSv+D4vclKwctTB/6dQNsTAfnplcyDZ9un/ql9BG2cgU9yqeYLDdXd
+            vRvrWX9eZKGJvTrQmAiKONlSvspr1d28FxcUrUnCsdRLvP3Cc4JZiUhSA7ixFxn3
+            +LgGIZiMKTnl8syrsHk5nvLi5EUER7xkVX8iBlKA4JD4XTZVyBxPB1mJnOCUShQc
+            QK6nVr6auvJbRn7DHHKxDflSBgYt4qaf92+5A4xEsZtgMpmIFH5t6ifGQsQwgYsm
+            fOexviy9gMyZrHjQDUs4smQxxYq3AJLdfOg2jQXeAbgZpCVw5l8YHk3ECoAk7Fvh
+            VMJVPwukErGuVn2LpCHeVyFBXNft4bem1g0gtaf2SuGFEnl7ABetQ0bRwClRSLd7
+            k7PGDbdcCImsWhqyuLpkNcm95DfBrXa12GETm48Wv9jV52C5tfWFmOnJ0mOnvtxX
+            gpizJjFzHz275TVnJHhmIr2DkiGpaIVUL4FRkTslejSJQoUTZfDAvKF2gRyk+n6N
+            mJ/hywVtvLxNkNimyztoKKMCAwEAAQ==
+            -----END PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    turingmachine = {
+      owner = config.krebs.users.Mic92;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.29.168";
+          aliases = [
+            "turingmachine.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAxh+5HD1oAFTvMWEra2pYrA3HF8T4EnkP917lIUiuN7xUj7sawu0C
+            t1/1IfIlH9dbxgFe5CD/gXvokxHdovPTGVH11L+thZgq6hg/xbYvZAl76yLxj7t9
+            6+Ocac08TQZYMqWKShz5jqTVE/DLz4Cdy0Qk9sMJ1++OmH8jsWgK5BkogF99Gwf8
+            ZiI0t3n3lCZsm3v592lveDcVIh6hjuCIvFVxc+7cOj0MKm1LxLWbCHZlUIE3he4g
+            nZu4XiYaE4Y2LicMs8zKehnQkkXrP1amT56SqUfbSnWR+HZc2+KjwRDI5BPeTS06
+            5WHwkQs0ScOn7vFZci3rElIc7vilu2eKGF1VLce9kXw9SU2RFciqavaEUXbwPnwT
+            1WF35Ct+qIOP0rXoObm6mrsj7hJnlBPlVpb58/kTxLHMSHPzqQRbFZ35f6tZodJ1
+            gRMKKEnMX8/VWm6TqLUIpFCCTZ5PH1fxaAnulHCxksK03UyfUOvExCTU4x8KS9fl
+            DIoLlV9PFBlAW8mTuIgRKYtHacsc31/5Tehcx0If09NuMFT9Qfl2/Q3p6QJomRFL
+            W5SCP9wx2ONhvZUkRbeihBiTN5/h3DepjOeNWd1DvE6K0Ag8SXMyBGtyKfer4ykW
+            OR0iCiRQQ5QBmNuJrBLRUyfoPqFUXBATT1SrRj8vzXO1TjTmANEMFD0CAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    eddie = {
+      owner = config.krebs.users.Mic92;
+      nets = rec {
+        internet = {
+          # eddie.thalheim.io
+          ip4.addr = "129.215.197.11";
+          aliases = [ "eddie.i" ];
+        };
+        retiolum = {
+          via = internet;
+          addrs = [
+            config.krebs.hosts.eddie.nets.retiolum.ip4.addr
+            config.krebs.hosts.eddie.nets.retiolum.ip6.addr
+          ];
+          ip4.addr = "10.243.29.170";
+          aliases = [ "eddie.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAuRQphRlSIC/aqRTfvStPdJOJCx1ACeFIDEjRdgoxuu32qoBl7i6d
+            j7Voh+Msditf2a5+f0fVsNDaPnjPGfk0NkZBjmn+RZQDRXk0krpTNj2Vb6W5quTm
+            3yrjJMFJR9CU5khfppc47X+ir8bjn7RusWTFNEuDvUswHmRmnJHLS3Y+utOaRbCF
+            2hxpyxCn423gpsaBfORPEK8X90nPbuNpFDugWPnC+R45TpNmIf4qyKvfhd9OKrua
+            KNanGHG30xhBW/DclUwwWi8D44d94xFnIRVcG1O+Uto93WoUWZn90lI1qywSj5Aq
+            iWstBK4tc7VwvAj0UzPlaRYYPfFjOEkPQzj8xC6l/leJcgxkup252uo6m1njMx3t
+            6QWMgevjqosY22OZReZfIwb14aDWFKLTWs30J+zmWK4TjlRITdsOEKxlpODMbJAD
+            kfSoPwuwkWIzFhNOrFiD/NtKaRYmV8bTBCT3a9cvvObshJx13BP+IUFzBS1N1n/u
+            hJWYH5WFsQZn/8rHDwZGkS1zKPEaNoydjqCZNyJpJ5nhggyl6gpuD7wpXM/8tFay
+            pAjRP40+qRQLUWXmswV0hsZTOX1tvZs4f68y3WJ+GwCWw9HvvwmzYes5ayJrPsbJ
+            lyK301Jb42wGEsVWxu3Eo/PLtp8OdD+Wdh6o/ELcc0k/YCUGFMujUM8CAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+          tinc.subnets = [
+            # edinburgh university
+            "129.215.0.0/16"
+          ];
+        };
+      };
+    };
+    rock = {
+      owner = config.krebs.users.Mic92;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.29.171";
+          aliases = [ "rock.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAsMJbXDhkaLZcEzCIe8G+rHyLulWIqrUAmDT4Vbtv4r0QhPBsqwjM
+            DuvRtX5SNHdjfZWnUZoOlmXrmIo07exPFQvyrnppm6DNx+IZ5mNMNVIFUoojRhF7
+            HS2jubcjTEib56XEYWKly0olrVMbsJk5THJqRQyOQuTPCFToxXVRcT5t/UK6Dzgh
+            mp+suJ7IcmmO80IwfZrQrQslkQ6TdOy1Vs908GacSQJyRxdRxLraU/98iMhFbAQf
+            Ap+qVSUU88iCi+tcoSYzKhqU2N0AhRGcsE073B3Px8CAgPK/juwTrFElKEc17X9M
+            Rh41DvUjrtG4ERPmbwKPtsLagmnZUlU8A5YC8wtV08RI5QBsbbOsKInareV1aLeD
+            91ZVCBPFTz8IM6Mc6H435eMCMC2ynFCDyRGdcue3tBQoaTGe1dbduIZkPGn+7cg4
+            fef1db6SQD4HCwDLv8CTFLACR/jmAapwZEgvJ3u3bpgMGzt+QNvL1cxUr3TBUWRv
+            3f0R+Dj8DCUWTJUE7K5LO7bL4p9Ht0yIsVH+/DucyoMQqRwCwWSr7+H2MAsWviav
+            ZRRfH0RqZPEzCxyLDBtkVrx+GRAUZxy1xlqmN16O/sRHiqq3bv8Jk3dwuRZlFu6q
+            cOFu4g9XsamHkmCuVkvTGjnC2h21MjUUr3PGHzOMtiM/18LcfX730f8CAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    inspector = {
+      owner = config.krebs.users.Mic92;
+      nets = rec {
+        internet = {
+          ip4.addr = "141.76.44.154";
+          aliases = [ "inspector.i" ];
+        };
+        retiolum = {
+          via = internet;
+          ip4.addr = "10.243.29.172";
+          aliases = [ "inspector.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAr3l/u7qcxmFa2hUICU3oPDhB2ij2R3lKHyjSsVFVLNfl6TpOdppG
+            EDXOapeXL0s+PfBRHdRI3v/dibj4PG9eyKmFxsUJ2gRz4ghb1UE23aQ3pkr3x8sZ
+            7GR+nJYATYf+jolFF9O1x+f0Uo5xaYWkGOMH8wVVzm6+kcsZOYuTEbJAsbTRZywF
+            m1MdRfk54hLiDsj2rjGRZIR+ZfUKVs2MTWOLCpBAHLJK+r3HfUiR2nAgeNkJCFLw
+            WIir1ftDIViT3Ly6b7enaOkVZ695FNYdPWFZCE4AJI0s9wsbMClzUqCl+0mUkumd
+            eRXgWXkmvBsxR4GECnxUhxs6U8Wh3kbQavvemt4vcIKNhkw32+toYc1AFK/n4G03
+            OUJBbRqgJYx9wIvo8PEu4DTTdsPlQZnMwiaKsn+Gi4Ap6JAnG/iLN8sChoQf7Dau
+            ARZA3sf9CkKx5sZ+9dVrLbzGynKE18Z/ysvf1BLd/rVVOps1B/YRBxDwPj8MZJ0x
+            B7b0j+hRVV5palp3RRdcExuWaBrMQQGsXwLUZOFHJJaZUHF9XRdy+5XVJdNOArkG
+            q1+yGhosL1DLTQE/VwCxmBHyYTr3L7yZ2lSaeWdIeYvcRvouDROUjREVFrQjdqwj
+            7vIP1cvDxSSqA07h/xEC4YZKACBYc/PI2mqYK5dvAUG3mGrEsjHktPUCAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    dpdkm = {
+      owner = config.krebs.users.Mic92;
+      nets = rec {
+        retiolum = {
+          ip4.addr = "10.243.29.173";
+          aliases = [ "dpdkm.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAuW31xGBdPMSS45KmsCX81yuTcDZv1z7wSpsGQiAw7RsApG0fbBDj
+            NvzWZaZpTTUueG7gtt7U9Gk8DhWYR1hNt8bLXxE5QlY+gxVjU8+caRvlv10Y9XYp
+            qZEr1n1O5R7jS1srvutPt74uiA8I3hBoeP5TXndu8tVcehjRWXPqJj4VCy9pT2gP
+            X880Z30cXm0jUIu9XKhzQU2UNaxbqRzhJTvFUG04M+0a9olsUoN7PnDV6MC5Dxzn
+            f0ZZZDgHkcx6vsSkN/C8Tik/UCXr3tS/VX6/3+PREz6Z3bPd2QfaWdowrlFQPeYa
+            bELPvuqYiq7zR/jw3vVsWX2e91goAfKH5LYKNmzJCj5yYq+knB7Wil3HgBn86zvL
+            Joj56VsuB8fQrrUxjrDetNgtdwci+yFeXkJouQRLM0r0W24liyCuBX4B6nqbj71T
+            B6rAMzhBbl1yixgf31EgiCYFSusk+jiT+hye5lAhes4gBW9GAWxGNU9zE4QeAc1w
+            tkPH/CxRIAeuPYNwmjvYI2eQH9UQkgSBa3/Kz7/KT9scbykbs8nhDHCXwT6oAp+n
+            dR5aHkuBrTQOCU3Xx5ZwU5A0T83oLExIeH8jR1h2mW1JoJDdO85dAOrIBHWnjLls
+            mqrJusBh2gbgvNqIrDaQ9J+o1vefw1QeSvcF71JjF1CEBUmTbUAp8KMCAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+    eve = {
+      owner = config.krebs.users.Mic92;
+      nets = rec {
+        internet = {
+          # eve.thalheim.io
+          ip4.addr = "188.68.39.17";
+          ip6.addr = "2a03:4000:13:31e::1";
+          aliases = [ "eve.i" ];
+        };
+        retiolum = {
+          via = internet;
+          addrs = [
+            config.krebs.hosts.eve.nets.retiolum.ip4.addr
+            config.krebs.hosts.eve.nets.retiolum.ip6.addr
+          ];
+          ip4.addr = "10.243.29.174";
+          aliases = [ "eve.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAw5cxGjnWCG8dcuhTddvGHzH0/VjxHA5V8qJXH2R5k8ki8dsM5FRH
+            XRcH/aYg+IL03cyx4wU7oJKxiOTNGbysglnbTVthfYhqeQY+NRTzR1Thb2Fo+P82
+            08Eovwlgb0uwCjaiH8ZoH3BKjXyMn/Ezrni7hc5zyyRb88XJLosTykO2USlrsoIk
+            6OCA3A34HyJH0/G6GbNYCPrB/a/r1ji7OWDlg3Ft9c3ViVOkcNV1d9FV0RULX9EI
+            +xRDbAs1fkK5wMkC2BpkJRHTpImPbYlwQvDrL2sp+JNAEVni84xGxWn9Wjd9WVv3
+            dn+iPUD7HF9bFVDsj0rbVL78c63MEgr0pVyONDBK+XxogMTOqjgicmkLRxlhaSPW
+            pnfZHJzJ727crBbwosORY+lTq6MNIMjEjNcJnzAEVS5uTJikLYL9Y5EfIztGp7LP
+            c298AtKjEYOftiyMcohTGnHhio6zteuW/i2sv4rCBxHyH5sWulaHB7X1ej0eepJi
+            YX6/Ff+y9vDLCuDxb6mvPGT1xpnNmt1jxAUJhiRNuAvbtvjtPwYfWjQXOf7xa2xI
+            61Oahtwy/szBj9mWIAymMfnvFGpeiIcww3ZGzYNyKBCjp1TkkgFRV3Y6eoq1sJ13
+            Pxol8FwH5+Q72bLtvg5Zva8D0Vx2U1jYSHEkRDDzaS5Z6Fus+zeZVMsCAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
+  };
+  users = {
+    Mic92 = {
+      pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKbBp2dH2X3dcU1zh+xW3ZsdYROKpJd3n13ssOP092qE";
+      mail = "joerg@higgsboson.tk";
+    };
+    kmein = {
+    };
+    palo = {
+    };
+    sokratess = {
+    };
+  };
+}
+
diff --git a/krebs/3modules/fetchWallpaper.nix b/krebs/3modules/fetchWallpaper.nix
index 5a5065565..e89b86e32 100644
--- a/krebs/3modules/fetchWallpaper.nix
+++ b/krebs/3modules/fetchWallpaper.nix
@@ -53,7 +53,7 @@ let
   imp = {
     users.users.fetchWallpaper = {
       name = "fetchWallpaper";
-      uid = genid "fetchWallpaper";
+      uid = genid_uint31 "fetchWallpaper";
       description = "fetchWallpaper user";
       home = cfg.stateDir;
       createHome = true;
diff --git a/krebs/3modules/git.nix b/krebs/3modules/git.nix
index f6b4e3c69..895d9b3b6 100644
--- a/krebs/3modules/git.nix
+++ b/krebs/3modules/git.nix
@@ -427,7 +427,7 @@ let
     system.activationScripts.cgit = ''
       mkdir -m 0770 -p ${cfg.cgit.settings.cache-root}
       chmod 0770 ${cfg.cgit.settings.cache-root}
-      chown ${toString cfg.cgit.fcgiwrap.user.uid}:${toString cfg.cgit.fcgiwrap.group.gid} ${cfg.cgit.settings.cache-root}
+      chown ${toString cfg.cgit.fcgiwrap.user.name}:${toString cfg.cgit.fcgiwrap.group.name} ${cfg.cgit.settings.cache-root}
     '';
 
     services.nginx.virtualHosts.cgit = {
diff --git a/krebs/3modules/jeschli/default.nix b/krebs/3modules/jeschli/default.nix
index 4bae31b31..9f5b1bd6a 100644
--- a/krebs/3modules/jeschli/default.nix
+++ b/krebs/3modules/jeschli/default.nix
@@ -1,17 +1,20 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
-  hosts = mapAttrs (_: recursiveUpdate {
-    owner = config.krebs.users.jeschli;
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
     ci = true;
-  }) {
+    owner = config.krebs.users.jeschli;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "jeschli" { inherit hostName; }).address;
+  });
+
+in {
+  hosts = mapAttrs hostDefaults {
     brauerei = {
       nets = {
         retiolum = {
           ip4.addr = "10.243.27.29";
-          ip6.addr = "42::29";
           aliases = [
             "brauerei.r"
           ];
@@ -55,7 +58,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = internet;
           ip4.addr = "10.243.27.30";
-          ip6.addr = "42::30";
           aliases = [
             "enklave.r"
             "cgit.enklave.r"
@@ -94,7 +96,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.27.31";
-          ip6.addr = "42::31";
           aliases = [
             "bolide.r"
           ];
diff --git a/krebs/3modules/krebs/default.nix b/krebs/3modules/krebs/default.nix
index 889ee2817..72c16711c 100644
--- a/krebs/3modules/krebs/default.nix
+++ b/krebs/3modules/krebs/default.nix
@@ -1,20 +1,24 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
-let
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.krebs;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "krebs" { inherit hostName; }).address;
+  });
+
   testHosts = genAttrs [
     "test-arch"
     "test-centos6"
     "test-centos7"
     "test-all-krebs-modules"
   ] (name: {
-    owner = config.krebs.users.krebs;
     inherit name;
     cores = 1;
     nets = {
       retiolum = {
         ip4.addr = "10.243.73.57";
-        ip6.addr = "42:0:0:0:0:0:0:7357";
         tinc.pubkey = ''
           -----BEGIN RSA PUBLIC KEY-----
           MIIBCgKCAQEAy41YKF/wpHLnN370MSdnAo63QUW30aw+6O79cnaJyxoL6ZQkk4Nd
@@ -29,14 +33,12 @@ let
     };
   });
 in {
-  hosts = {
+  hosts = mapAttrs hostDefaults ({
     hotdog = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.77.3";
-          ip6.addr = "42:0:0:0:0:0:77:3";
           aliases = [
             "hotdog.r"
             "build.r"
@@ -61,11 +63,9 @@ in {
     };
     onebutton = {
       cores = 1;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.101";
-          ip6.addr = "42:0:0:0:0:0:0:101";
           aliases = [
             "onebutton.r"
           ];
@@ -92,11 +92,9 @@ in {
     };
     puyak = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         retiolum = {
           ip4.addr = "10.243.77.2";
-          ip6.addr = "42:0:0:0:0:0:77:2";
           aliases = [
             "puyak.r"
             "build.puyak.r"
@@ -120,7 +118,6 @@ in {
     };
     wolf = {
       ci = true;
-      owner = config.krebs.users.krebs;
       nets = {
         shack = {
           ip4.addr =  "10.42.2.150" ;
@@ -135,7 +132,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.77.1";
-          ip6.addr = "42:0:0:0:0:0:77:1";
           aliases = [
             "wolf.r"
             "build.wolf.r"
@@ -157,7 +153,7 @@ in {
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKYMXMWZIK0jjnZDM9INiYAKcwjXs2241vew54K8veCR";
     };
-  } // testHosts;
+  } // testHosts);
   users = {
     krebs = {
       pubkey = "lol"; # TODO krebs.users.krebs.pubkey should be unnecessary
diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index 12345a20a..1117dc61c 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -1,16 +1,20 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
+  hostDefaults = hostName: host: flip recursiveUpdate host {
+    ci = true;
+    monitoring = true;
+    owner = config.krebs.users.lass;
+  };
+
+  r6 = ip: (krebs.genipv6 "retiolum" "lass" ip).address;
+  w6 = ip: (krebs.genipv6 "wiregrill" "lass" ip).address;
+
+in {
   dns.providers = {
     "lassul.us" = "zones";
   };
-  hosts = mapAttrs (_: recursiveUpdate {
-    owner = config.krebs.users.lass;
-    ci = true;
-    monitoring = true;
-  }) {
+  hosts = mapAttrs hostDefaults {
     prism = rec {
       cores = 4;
       extraZones = {
@@ -50,7 +54,7 @@ with import <stockholm/lib>;
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.103";
-          ip6.addr = "42:0000:0000:0000:0000:0000:0000:15ab";
+          ip6.addr = r6 "1";
           aliases = [
             "prism.r"
             "cache.prism.r"
@@ -85,11 +89,22 @@ with import <stockholm/lib>;
             -----END RSA PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          via = internet;
+          ip4.addr = "10.244.1.1";
+          ip6.addr = w6 "1";
+          aliases = [
+            "prism.w"
+          ];
+          wireguard = {
+            pubkey = "oKJotppdEJqQBjrqrommEUPw+VFryvEvNJr/WikXohk=";
+            subnets = [ "10.244.1.0/24" "42:1::/32" ];
+          };
+        };
       };
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAsANFdMi825qWQXQbWLYuNZ6/fARt3lnh1KStQHQQMD";
     };
-
     archprism = {
       cores = 1;
       nets = rec {
@@ -103,7 +118,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.123";
-          ip6.addr = "42:0:0:0:0:0:0:123";
           aliases = [
             "archprism.r"
           ];
@@ -129,32 +143,13 @@ with import <stockholm/lib>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAsANFdMi825qWQXQbWLYuNZ6/fARt3lnh1KStQHQQMD";
     };
 
-    domsen-nas = {
-      ci = false;
-      monitoring = false;
-      external = true;
-      nets = rec {
-        internet = {
-          aliases = [
-            "domsen-nas.internet"
-          ];
-          ip4.addr = "87.138.180.167";
-          ssh.port = 2223;
-        };
-      };
-    };
     uriel = {
       monitoring = false;
       cores = 1;
       nets = {
-        gg23 = {
-          ip4.addr = "10.23.1.12";
-          aliases = ["uriel.gg23"];
-          ssh.port = 45621;
-        };
         retiolum = {
           ip4.addr = "10.243.81.176";
-          ip6.addr = "42:dc25:60cf:94ef:759b:d2b6:98a9:2e56";
+          ip6.addr = r6 "1e1";
           aliases = [
             "uriel.r"
             "cgit.uriel.r"
@@ -178,14 +173,9 @@ with import <stockholm/lib>;
     mors = {
       cores = 2;
       nets = {
-        gg23 = {
-          ip4.addr = "10.23.1.11";
-          aliases = ["mors.gg23"];
-          ssh.port = 45621;
-        };
         retiolum = {
           ip4.addr = "10.243.0.2";
-          ip6.addr = "42:0:0:0:0:0:0:dea7";
+          ip6.addr = r6 "dea7";
           aliases = [
             "mors.r"
             "cgit.mors.r"
@@ -201,6 +191,13 @@ with import <stockholm/lib>;
             -----END RSA PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          ip6.addr = w6 "dea7";
+          aliases = [
+            "mors.w"
+          ];
+          wireguard.pubkey = "FkcxMathQzJYwuJBli/nibh0C0kHe9/T2xU0za3J3SQ=";
+        };
       };
       secure = true;
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
@@ -211,7 +208,7 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.4";
-          ip6.addr = "42:0:0:0:0:0:0:50d4";
+          ip6.addr = r6 "50da";
           aliases = [
             "shodan.r"
             "cgit.shodan.r"
@@ -227,6 +224,13 @@ with import <stockholm/lib>;
             -----END RSA PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          ip6.addr = w6 "50da";
+          aliases = [
+            "shodan.w"
+          ];
+          wireguard.pubkey = "0rI/I8FYQ3Pba7fQ9oyvtP4a54GWsPa+3zAiGIuyV30=";
+        };
       };
       secure = true;
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
@@ -237,7 +241,7 @@ with import <stockholm/lib>;
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.114";
-          ip6.addr = "42:0:0:0:0:0:01ca:1205";
+          ip6.addr = r6 "1205";
           aliases = [
             "icarus.r"
             "cgit.icarus.r"
@@ -253,6 +257,13 @@ with import <stockholm/lib>;
             -----END RSA PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          ip6.addr = w6 "1205";
+          aliases = [
+            "icarus.w"
+          ];
+          wireguard.pubkey = "mVe3YdlWOlVF5+YD5vgNha3s03dv6elmNVsARtPLXQQ=";
+        };
       };
       secure = true;
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
@@ -263,7 +274,7 @@ with import <stockholm/lib>;
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.115";
-          ip6.addr = "42:0:0:0:0:0:daed:a105";
+          ip6.addr = r6 "dead";
           aliases = [
             "daedalus.r"
             "cgit.daedalus.r"
@@ -289,7 +300,7 @@ with import <stockholm/lib>;
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.133.116";
-          ip6.addr = "42:0:0:0:0:0:0:1101";
+          ip6.addr = r6 "5ce7";
           aliases = [
             "skynet.r"
             "cgit.skynet.r"
@@ -315,7 +326,7 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.133.77";
-          ip6.addr = "42:0:0:0:0:0:717:7137";
+          ip6.addr = r6 "771e";
           aliases = [
             "littleT.r"
           ];
@@ -351,306 +362,13 @@ with import <stockholm/lib>;
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJzb9BPFClubs6wSOi/ivqPFVPlowXwAxBS0jHaB29hX";
     };
-    iso = {
-      monitoring = false;
-      ci = false;
-      cores = 1;
-    };
-    sokrateslaptop = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.142.104";
-          ip6.addr = "42:f8a1:044d:0f75:9d73:56d8:f432:c6cc";
-          aliases = [
-            "sokrateslaptop.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIIBCgKCAQEA0EMbBv5NCSns4V/VR/NJHhwe2qNLUYjWWtCDY4zDuoiJdm3JNZJ2
-            t0iKNxFwd6Mmg3ahAlndsH4FOjOBGBQCgBG25VRnQgli1sypI/gYTsSgIWHVIRoZ
-            rgrng0K3oyJ6FuTP+nH1rd7UAYkrOQolXQBY+LqAbxOVjiJl+DpbAXIxCIs5TBeW
-            egtBiXZ1S53Lv5EGFXug716XlgZLHjw7PzRLJXSlvUAIRZj0Sjq4UD9VrhazM9s5
-            aDuxJIdknccEEXm6NK7a51hU/o8L+T0IUpZxhaXOdi6fvO/y3TbffKb1yRTbN0/V
-            VBjBh18Le7h0SmAEED5tz7NOCrAjMZQtJQIDAQAB
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    kruck = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.29.201";
-          ip6.addr = "42:4234:6a6d:600::1";
-          aliases = [
-            "kruck.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAxcui2sirT5YY9HrSauj9nSF3AxUnfd2CCEGyzmzbi5+qw8T9jdNh
-            QcIG3s+eC3uEy6leL/eeR4NjVtQRt8CDmhGul95Vs3I1jx9gdvYR+HOatPgK0YQA
-            EFwk0jv8Z8tOc87X1qwA00Gb+25+kAzsf+8+4HQuh/szSGje3RBmBFkUyNHh8R0U
-            uzs8NSTRdN+edvYtzjnYcE1sq59HFBPkVcJNp5I3qYTp6m9SxGHMvsq6vRpNnjq/
-            /RZVBhnPDBlgxia/aVfVQKeEOHZV3svLvsJzGDrUWsJCEvF0YwW4bvohY19myTNR
-            9lXo/VFx86qAkY09il2OloE7iu5cA2RV+FWwLeajE9vIDA06AD7nECVgthNoZd1s
-            qsDfuu3WqlpyBmr6XhRkYOFFE4xVLrZ0vItGYlgR2UPp9TjHrzfsedoyJoJAbhMH
-            gDlFgiHlAy1fhG1sCX5883XmSjWn0eJwmZ2O9sZNBP5dxfGUXg/x8NWfQj7E1lqj
-            jQ59UC6yiz7bFtObKvpdn1D4tPbqBvndZzn19U/3wKo+cCBRjtLmUD7HQHC65dCs
-            fAiCFvUTVMM3SNDvYChm0U/KGjZZFwQ+cCLj1JNVPet2C+CJ0qI2muXOnCuv/0o5
-            TBZrrHMpj6Th8AiOgeMVuxzjX1FsmAThWj9Qp/jQu6O0qvnkUNaU7I8CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    turingmachine = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.29.168";
-          ip6.addr = "42:4992:6a6d:600::1";
-          aliases = [
-            "turingmachine.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAxh+5HD1oAFTvMWEra2pYrA3HF8T4EnkP917lIUiuN7xUj7sawu0C
-            t1/1IfIlH9dbxgFe5CD/gXvokxHdovPTGVH11L+thZgq6hg/xbYvZAl76yLxj7t9
-            6+Ocac08TQZYMqWKShz5jqTVE/DLz4Cdy0Qk9sMJ1++OmH8jsWgK5BkogF99Gwf8
-            ZiI0t3n3lCZsm3v592lveDcVIh6hjuCIvFVxc+7cOj0MKm1LxLWbCHZlUIE3he4g
-            nZu4XiYaE4Y2LicMs8zKehnQkkXrP1amT56SqUfbSnWR+HZc2+KjwRDI5BPeTS06
-            5WHwkQs0ScOn7vFZci3rElIc7vilu2eKGF1VLce9kXw9SU2RFciqavaEUXbwPnwT
-            1WF35Ct+qIOP0rXoObm6mrsj7hJnlBPlVpb58/kTxLHMSHPzqQRbFZ35f6tZodJ1
-            gRMKKEnMX8/VWm6TqLUIpFCCTZ5PH1fxaAnulHCxksK03UyfUOvExCTU4x8KS9fl
-            DIoLlV9PFBlAW8mTuIgRKYtHacsc31/5Tehcx0If09NuMFT9Qfl2/Q3p6QJomRFL
-            W5SCP9wx2ONhvZUkRbeihBiTN5/h3DepjOeNWd1DvE6K0Ag8SXMyBGtyKfer4ykW
-            OR0iCiRQQ5QBmNuJrBLRUyfoPqFUXBATT1SrRj8vzXO1TjTmANEMFD0CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    eddie = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = rec {
-        internet = {
-          # eddie.thalheim.io
-          ip4.addr = "129.215.197.11";
-          aliases = [ "eddie.i" ];
-        };
-        retiolum = rec {
-          via = internet;
-          addrs = [
-            ip4.addr
-            ip6.addr
-          ];
-          ip4.addr = "10.243.29.170";
-          ip6.addr = "42:4992:6a6d:700::1";
-          aliases = [ "eddie.r" ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAuRQphRlSIC/aqRTfvStPdJOJCx1ACeFIDEjRdgoxuu32qoBl7i6d
-            j7Voh+Msditf2a5+f0fVsNDaPnjPGfk0NkZBjmn+RZQDRXk0krpTNj2Vb6W5quTm
-            3yrjJMFJR9CU5khfppc47X+ir8bjn7RusWTFNEuDvUswHmRmnJHLS3Y+utOaRbCF
-            2hxpyxCn423gpsaBfORPEK8X90nPbuNpFDugWPnC+R45TpNmIf4qyKvfhd9OKrua
-            KNanGHG30xhBW/DclUwwWi8D44d94xFnIRVcG1O+Uto93WoUWZn90lI1qywSj5Aq
-            iWstBK4tc7VwvAj0UzPlaRYYPfFjOEkPQzj8xC6l/leJcgxkup252uo6m1njMx3t
-            6QWMgevjqosY22OZReZfIwb14aDWFKLTWs30J+zmWK4TjlRITdsOEKxlpODMbJAD
-            kfSoPwuwkWIzFhNOrFiD/NtKaRYmV8bTBCT3a9cvvObshJx13BP+IUFzBS1N1n/u
-            hJWYH5WFsQZn/8rHDwZGkS1zKPEaNoydjqCZNyJpJ5nhggyl6gpuD7wpXM/8tFay
-            pAjRP40+qRQLUWXmswV0hsZTOX1tvZs4f68y3WJ+GwCWw9HvvwmzYes5ayJrPsbJ
-            lyK301Jb42wGEsVWxu3Eo/PLtp8OdD+Wdh6o/ELcc0k/YCUGFMujUM8CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-          tinc.subnets = [
-            # edinburgh university
-            "129.215.0.0/16"
-          ];
-        };
-      };
-    };
-    rock = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.29.171";
-          ip6.addr = "42:4992:6a6d:700::2";
-          aliases = [ "rock.r" ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAsMJbXDhkaLZcEzCIe8G+rHyLulWIqrUAmDT4Vbtv4r0QhPBsqwjM
-            DuvRtX5SNHdjfZWnUZoOlmXrmIo07exPFQvyrnppm6DNx+IZ5mNMNVIFUoojRhF7
-            HS2jubcjTEib56XEYWKly0olrVMbsJk5THJqRQyOQuTPCFToxXVRcT5t/UK6Dzgh
-            mp+suJ7IcmmO80IwfZrQrQslkQ6TdOy1Vs908GacSQJyRxdRxLraU/98iMhFbAQf
-            Ap+qVSUU88iCi+tcoSYzKhqU2N0AhRGcsE073B3Px8CAgPK/juwTrFElKEc17X9M
-            Rh41DvUjrtG4ERPmbwKPtsLagmnZUlU8A5YC8wtV08RI5QBsbbOsKInareV1aLeD
-            91ZVCBPFTz8IM6Mc6H435eMCMC2ynFCDyRGdcue3tBQoaTGe1dbduIZkPGn+7cg4
-            fef1db6SQD4HCwDLv8CTFLACR/jmAapwZEgvJ3u3bpgMGzt+QNvL1cxUr3TBUWRv
-            3f0R+Dj8DCUWTJUE7K5LO7bL4p9Ht0yIsVH+/DucyoMQqRwCwWSr7+H2MAsWviav
-            ZRRfH0RqZPEzCxyLDBtkVrx+GRAUZxy1xlqmN16O/sRHiqq3bv8Jk3dwuRZlFu6q
-            cOFu4g9XsamHkmCuVkvTGjnC2h21MjUUr3PGHzOMtiM/18LcfX730f8CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    inspector = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = rec {
-        internet = {
-          ip4.addr = "141.76.44.154";
-          aliases = [ "inspector.i" ];
-        };
-        retiolum = {
-          via = internet;
-          ip4.addr = "10.243.29.172";
-          ip6.addr = "42:4992:6a6d:800::1";
-          aliases = [ "inspector.r" ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAr3l/u7qcxmFa2hUICU3oPDhB2ij2R3lKHyjSsVFVLNfl6TpOdppG
-            EDXOapeXL0s+PfBRHdRI3v/dibj4PG9eyKmFxsUJ2gRz4ghb1UE23aQ3pkr3x8sZ
-            7GR+nJYATYf+jolFF9O1x+f0Uo5xaYWkGOMH8wVVzm6+kcsZOYuTEbJAsbTRZywF
-            m1MdRfk54hLiDsj2rjGRZIR+ZfUKVs2MTWOLCpBAHLJK+r3HfUiR2nAgeNkJCFLw
-            WIir1ftDIViT3Ly6b7enaOkVZ695FNYdPWFZCE4AJI0s9wsbMClzUqCl+0mUkumd
-            eRXgWXkmvBsxR4GECnxUhxs6U8Wh3kbQavvemt4vcIKNhkw32+toYc1AFK/n4G03
-            OUJBbRqgJYx9wIvo8PEu4DTTdsPlQZnMwiaKsn+Gi4Ap6JAnG/iLN8sChoQf7Dau
-            ARZA3sf9CkKx5sZ+9dVrLbzGynKE18Z/ysvf1BLd/rVVOps1B/YRBxDwPj8MZJ0x
-            B7b0j+hRVV5palp3RRdcExuWaBrMQQGsXwLUZOFHJJaZUHF9XRdy+5XVJdNOArkG
-            q1+yGhosL1DLTQE/VwCxmBHyYTr3L7yZ2lSaeWdIeYvcRvouDROUjREVFrQjdqwj
-            7vIP1cvDxSSqA07h/xEC4YZKACBYc/PI2mqYK5dvAUG3mGrEsjHktPUCAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    dpdkm = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = rec {
-        retiolum = {
-          ip4.addr = "10.243.29.173";
-          ip6.addr = "42:4992:6a6d:900::1";
-          aliases = [ "dpdkm.r" ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAuW31xGBdPMSS45KmsCX81yuTcDZv1z7wSpsGQiAw7RsApG0fbBDj
-            NvzWZaZpTTUueG7gtt7U9Gk8DhWYR1hNt8bLXxE5QlY+gxVjU8+caRvlv10Y9XYp
-            qZEr1n1O5R7jS1srvutPt74uiA8I3hBoeP5TXndu8tVcehjRWXPqJj4VCy9pT2gP
-            X880Z30cXm0jUIu9XKhzQU2UNaxbqRzhJTvFUG04M+0a9olsUoN7PnDV6MC5Dxzn
-            f0ZZZDgHkcx6vsSkN/C8Tik/UCXr3tS/VX6/3+PREz6Z3bPd2QfaWdowrlFQPeYa
-            bELPvuqYiq7zR/jw3vVsWX2e91goAfKH5LYKNmzJCj5yYq+knB7Wil3HgBn86zvL
-            Joj56VsuB8fQrrUxjrDetNgtdwci+yFeXkJouQRLM0r0W24liyCuBX4B6nqbj71T
-            B6rAMzhBbl1yixgf31EgiCYFSusk+jiT+hye5lAhes4gBW9GAWxGNU9zE4QeAc1w
-            tkPH/CxRIAeuPYNwmjvYI2eQH9UQkgSBa3/Kz7/KT9scbykbs8nhDHCXwT6oAp+n
-            dR5aHkuBrTQOCU3Xx5ZwU5A0T83oLExIeH8jR1h2mW1JoJDdO85dAOrIBHWnjLls
-            mqrJusBh2gbgvNqIrDaQ9J+o1vefw1QeSvcF71JjF1CEBUmTbUAp8KMCAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    eve = {
-      monitoring = false;
-      ci = false;
-      external = true;
-      nets = rec {
-        internet = {
-          # eve.thalheim.io
-          ip4.addr = "188.68.39.17";
-          ip6.addr = "2a03:4000:13:31e::1";
-          aliases = [ "eve.i" ];
-        };
-        retiolum = rec {
-          via = internet;
-          addrs = [
-            ip4.addr
-            ip6.addr
-          ];
-          ip4.addr = "10.243.29.174";
-          ip6.addr = "42:4992:6a6d:a00::1";
-          aliases = [ "eve.r" ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAw5cxGjnWCG8dcuhTddvGHzH0/VjxHA5V8qJXH2R5k8ki8dsM5FRH
-            XRcH/aYg+IL03cyx4wU7oJKxiOTNGbysglnbTVthfYhqeQY+NRTzR1Thb2Fo+P82
-            08Eovwlgb0uwCjaiH8ZoH3BKjXyMn/Ezrni7hc5zyyRb88XJLosTykO2USlrsoIk
-            6OCA3A34HyJH0/G6GbNYCPrB/a/r1ji7OWDlg3Ft9c3ViVOkcNV1d9FV0RULX9EI
-            +xRDbAs1fkK5wMkC2BpkJRHTpImPbYlwQvDrL2sp+JNAEVni84xGxWn9Wjd9WVv3
-            dn+iPUD7HF9bFVDsj0rbVL78c63MEgr0pVyONDBK+XxogMTOqjgicmkLRxlhaSPW
-            pnfZHJzJ727crBbwosORY+lTq6MNIMjEjNcJnzAEVS5uTJikLYL9Y5EfIztGp7LP
-            c298AtKjEYOftiyMcohTGnHhio6zteuW/i2sv4rCBxHyH5sWulaHB7X1ej0eepJi
-            YX6/Ff+y9vDLCuDxb6mvPGT1xpnNmt1jxAUJhiRNuAvbtvjtPwYfWjQXOf7xa2xI
-            61Oahtwy/szBj9mWIAymMfnvFGpeiIcww3ZGzYNyKBCjp1TkkgFRV3Y6eoq1sJ13
-            Pxol8FwH5+Q72bLtvg5Zva8D0Vx2U1jYSHEkRDDzaS5Z6Fus+zeZVMsCAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-    };
-    xerxes = {
-      cores = 2;
-      nets = rec {
-        retiolum = {
-          ip4.addr = "10.243.1.3";
-          ip6.addr = "42::1:3";
-          aliases = [
-            "xerxes.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIIECgKCBAEArqEaK+m7WZe/9/Vbc+qx2TjkkRJ9lDgDMr1dvj98xb8/EveUME6U
-            MZyAqNjLuKq3CKzJLo02ZmdFs4CT1Hj28p5IC0wLUWn53hrqdy8cCJDvIiKIv+Jk
-            gItsxJyMnRtsdDbB6IFJ08D5ReGdAFJT5lqpN0DZuNC6UQRxzUK5fwKYVVzVX2+W
-            /EZzEPe5XbE69V/Op2XJ2G6byg9KjOzNJyJxyjwVco7OXn1OBNp94NXoFrUO7kxb
-            mTNnh3D+iB4c3qv8woLhmb+Uh/9MbXS14QrSf85ou4kfUjb5gdhjIlzz+jfA/6XO
-            X4t86uv8L5IzrhSGb0TmhrIh5HhUmSKT4RdHJom0LB7EASMR2ZY9AqIG11XmXuhj
-            +2b5INBZSj8Cotv5aoRXiPSaOd7bw7lklYe4ZxAU+avXot9K3/4XVLmi6Wa6Okim
-            hz+MEYjW5gXY+YSUWXOR4o24jTmDjQJpdL83eKwLVAtbrE7TcVszHX6zfMoQZ5M9
-            3EtOkDMxhC+WfkL+DLQAURhgcPTZoaj0cAlvpb0TELZESwTBI09jh/IBMXHBZwI4
-            H1gOD5YENpf0yUbLjVu4p82Qly10y58XFnUmYay0EnEgdPOOVViovGEqTiAHMmm5
-            JixtwJDz7a6Prb+owIg27/eE1/E6hpfXpU8U83qDYGkIJazLnufy32MTFE4T9fI4
-            hS8icFcNlsobZp+1pB3YK4GV5BnvMwOIVXVlP8yMCRTDRWZ4oYmAZ5apD7OXyNwe
-            SUP2mCNNlQCqyjRsxj5S1lZQRy1sLQztU5Sff4xYNK+5aPgJACmvSi3uaJAxBloo
-            4xCCYzxhaBlvwVISJXZTq76VSPybeQ+pmSZFMleNnWOstvevLFeOoH2Is0Ioi1Fe
-            vnu5r0D0VYsb746wyRooiEuOAjBmni8X/je6Vwr1gb/WZfZ23EwYpGyakJdxLNv3
-            Li+LD9vUfOR80WL608sUU45tAx1RAy6QcH/YDtdClbOdK53+cQVTsYnCvDW8uGlO
-            scQWgk+od3qvo6yCPO7pRlEd3nedcPSGh/KjBHao6eP+bsVERp733Vb9qrEVwmxv
-            jlZ1m12V63wHVu9uMAGi9MhK+2Q/l7uLTj03OYpi4NYKL2Bu01VXfoxuauuZLdIJ
-            Z3ZV+qUcjzZI0PBlGxubq6CqVFoSB7nhHUbcdPQ66WUnwoKq0cKmE7VOlJQvJ07u
-            /Wsl8BIsxODVt0rTzEAx0hTd5mJCX7sCawRt+NF+1DZizl9ouebNMkNlsEAg4Ps0
-            bQerZLcOmpYjGa5+lWDwJIMXVIcxwTmQR86stlP/KQm0vdOvH2ZUWTXcYvCYlHkQ
-            sgVnnA2wt+7UpZnEBHy04ry+jYaSsPdYgwIDAQAB
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-      secure = true;
-      ssh.privkey.path = <secrets/ssh.id_ed25519>;
-      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE5HyLyaIvVH0qHIQ4ciKhDiElhSqsK+uXcA6lTvL+5n";
-    };
     red = {
       monitoring = false;
       cores = 1;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.13";
-          ip6.addr = "42:0:0:0:0:0:0:12ed";
+          ip6.addr = r6 "12ed";
           aliases = [
             "red.r"
           ];
@@ -680,7 +398,7 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.14";
-          ip6.addr = "42:0:0:0:0:0:0:14";
+          ip6.addr = r6 "3110";
           aliases = [
             "yellow.r"
           ];
@@ -701,6 +419,13 @@ with import <stockholm/lib>;
             -----END PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          ip6.addr = w6 "3110";
+          aliases = [
+            "yellow.w"
+          ];
+          wireguard.pubkey = "YeWbR3mW+nOVBE7bcNSzF5fjj9ppd8OGHBJqERAUVxU=";
+        };
       };
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC03TCO73NQZHo7NKZiVJp2iiUbe6PQP14Kg3Bnlkqje ";
@@ -710,7 +435,7 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.77";
-          ip6.addr = "42:0:0:0:0:0:0:77";
+          ip6.addr = r6 "b1ce";
           aliases = [
             "blue.r"
           ];
@@ -731,10 +456,67 @@ with import <stockholm/lib>;
             -----END PUBLIC KEY-----
           '';
         };
+        wiregrill = {
+          ip6.addr = w6 "b1ce";
+          aliases = [
+            "blue.w"
+          ];
+          wireguard.pubkey = "emftvx8v8GdoKe68MFVL53QZ187Ei0zhMmvosU1sr3U=";
+        };
       };
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILSBxtPf8yJfzzI7/iYpoRSc/TT+zYmE/HM9XWS3MZlv";
     };
+    phone = {
+      nets = {
+        wiregrill = {
+          ip4.addr = "10.244.1.2";
+          ip6.addr = w6 "a";
+          aliases = [
+            "phone.w"
+          ];
+          wireguard.pubkey = "zVunBVOxsMETlnHkgjfH71HaZjjNUOeYNveAVv5z3jw=";
+        };
+      };
+      external = true;
+      ci = false;
+    };
+    morpheus = {
+      cores = 1;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.0.19";
+          ip6.addr = r6 "012f";
+          aliases = [
+            "morpheus.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAptrlSKQKsBH2QMQxllZR94S/fXneajpJifRjXR5bi+7ME2ThdQXY
+            T7yWiKaUuBJThWged9PdPltLUEMmv+ubQqpWHZq442VWSS36r1yMSGpUeKK+oYMN
+            /Sfu+1yC4m2uXno95wpJZIcDfbbn26jT6ldJ4Yd97zyrXKljvcdrz3wZzQq0tojh
+            S5Q59x/aQMJbnQpnlFnMIEVgULuFPW16+vPGsXIPdYNggaF1avcBaFl8i3M0EZVz
+            Swn4hArDynDJhR7M0QdlwOpOh7O+1iOnmXqqei3LxMVHb+YtzfHgxOPxggUsy7CR
+            bj9uBR9loGwgmZwaxXd1Vfbw8kn/feOb9FcW73u+SZyzwEA9HFRV0jGQe3P9mGfI
+            Bwe02DOTVXEB8jTAGCw5T3bXLIOX8kqdlCECuAWFfrt8H+GjZDuGUWRcMn32orMz
+            sMvkab95ZOHK6Q31mrhILOIOdyZWKPZIabL3HF6CZtu52h6MDHbmGS0w0OJYhj2+
+            VnT9ZBoaeooVg8QOE43rCXvmL5vzhLKrj4s/53wTGG5SpzLs9Q9rrJVgAnz4YQ7j
+            3Ov5q3Zxyr+vO6O7Pb5X49vCQw/jzK41S0/15GEmKcoxXemzeZCpX1mbeeTUtLvA
+            U7OJwldrElzictBJ1gT94L4BDvoGZVqAkXJCJPamfsWaiw6SsMqtTfECAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+        wiregrill = {
+          ip6.addr = w6 "012f";
+          aliases = [
+            "morpheus.w"
+          ];
+          wireguard.pubkey = "BdiIHJjJQThmZD8DehxPGA+bboBHjljedwaRaV5yyDY=";
+        };
+      };
+      ssh.privkey.path = <secrets/ssh.id_ed25519>;
+      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHXS60mmNWMdMRvaPxGn91Cm/hm7zY8xn5rkI4n2KG/f ";
+    };
   };
   users = rec {
     lass = lass-blue;
@@ -786,14 +568,8 @@ with import <stockholm/lib>;
       pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGv6N/UjFnX5vUicT9Sw0+3x4mR0760iaVWZ/JDtdV4h";
       mail = "lass@mors.r";
     };
-    sokratess = {
-    };
     wine-mors = {
       pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEKfTIKmbe1RjX1fjAn//08363zAsI0CijWnaYyAC842";
     };
-    Mic92 = {
-      pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKbBp2dH2X3dcU1zh+xW3ZsdYROKpJd3n13ssOP092qE";
-      mail = "joerg@higgsboson.tk";
-    };
   };
 }
diff --git a/krebs/3modules/makefu/default.nix b/krebs/3modules/makefu/default.nix
index 188fbc461..befec2156 100644
--- a/krebs/3modules/makefu/default.nix
+++ b/krebs/3modules/makefu/default.nix
@@ -1,20 +1,27 @@
-{ config, ... }:
-
-with import <stockholm/lib>;
 ## generate keys with:
 # tinc generate-keys
 # ssh-keygen -f ssh.id_ed25519 -t ed25519 -C host
-let
+
+with import <stockholm/lib>;
+{ config, ... }: let
+
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.makefu;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "makefu" { inherit hostName; }).address;
+  });
+
   pub-for = name: builtins.readFile (./ssh + "/${name}.pub");
+
 in {
-  hosts = mapAttrs (_: setAttr "owner" config.krebs.users.makefu) {
+  hosts = mapAttrs hostDefaults {
     cake = rec {
       cores = 4;
       ci = false;
       nets = {
         retiolum = {
           ip4.addr = "10.243.136.236";
-          ip6.addr  = "42:b3b2:9552:eef0:ee67:f3b3:8d33:eee1";
           aliases = [
             "cake.r"
           ];
@@ -39,7 +46,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.136.237";
-          ip6.addr  = "42:b3b2:9552:eef0:ee67:f3b3:8d33:eee2";
           aliases = [
             "crapi.r"
           ];
@@ -65,7 +71,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.177.9";
-          ip6.addr = "42:f63:ddf8:7520:cfec:9b61:d807:1dce";
           aliases = [
             "drop.r"
           ];
@@ -90,7 +95,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.227.163";
-          ip6.addr  = "42:e23f:ae0e:ea25:72ff:4ab8:9bd9:38a6";
           aliases = [
             "studio.r"
           ];
@@ -116,7 +120,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.113.98";
-          # ip6.addr  = "42:5cf1:e7f2:3fd:cd4c:a1ee:ec71:7096";
           aliases = [
             "fileleech.r"
           ];
@@ -147,7 +150,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.80.249";
-          ip6.addr  = "42:ecb0:376:b37d:cf47:1ecf:f32b:a3b9";
           aliases = [
             "latte.r"
           ];
@@ -171,7 +173,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.210";
-          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0001";
           aliases = [
             "pnp.r"
             "cgit.pnp.r"
@@ -195,7 +196,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.84";
-          ip6.addr = "42:ff6b:5f0b:460d:2cee:4d05:73f7:5566";
           aliases = [
             "darth.r"
           ];
@@ -267,7 +267,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.212";
-          ip6.addr = "42:f9f1:0000:0000:0000:0000:0000:0002";
           aliases = [
             "tsp.r"
           ];
@@ -295,7 +294,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.91";
-          ip6.addr = "42:0b2c:d90e:e717:03dc:9ac1:7c30:a4db";
           aliases = [
             "x.r"
           ];
@@ -329,7 +327,6 @@ in {
           '';
         };
         #wiregrill = {
-        #  ip6.addr = "42:4200:0000:0000:0000:0000:0000:a4db";
         #  aliases = [
         #    "x.w"
         #  ];
@@ -347,7 +344,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.1.91";
-          ip6.addr = "42:0b2c:d90e:e717:03dd:9ac1:0000:a400";
           aliases = [
             "vbob.r"
           ];
@@ -386,7 +382,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.0.153";
-          ip6.addr = "42:9143:b4c0:f981:6030:7aa2:8bc5:4110";
           aliases = [
             "pigstarter.r"
           ];
@@ -422,7 +417,6 @@ in {
         retiolum = {
           via = internet;
           ip4.addr = "10.243.29.169";
-          ip6.addr = "42:6e1e:cc8a:7cef:827:f938:8c64:baad";
           aliases = [
             "wry.r"
             "graph.wry.r"
@@ -460,7 +454,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.153.102";
-          ip6.addr = "42:4b0b:d990:55ba:8da8:630f:dc0e:aae0";
           aliases = [
             "filepimp.r"
           ];
@@ -491,7 +484,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.0.89";
-          ip6.addr = "42:f9f0::10";
           aliases = [
             "omo.r"
             "dcpp.omo.r"
@@ -536,7 +528,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.214.15";
-          # ip6.addr = "42:5a02:2c30:c1b1:3f2e:7c19:2496:a732";
           aliases = [
             "wbob.r"
             "hydra.wbob.r"
@@ -560,27 +551,28 @@ in {
       ci = true;
       extraZones = {
         "krebsco.de" = ''
+          boot.euer         IN A      ${nets.internet.ip4.addr}
           cache.euer        IN A      ${nets.internet.ip4.addr}
           cache.gum         IN A      ${nets.internet.ip4.addr}
-          graph             IN A      ${nets.internet.ip4.addr}
-          gold              IN A      ${nets.internet.ip4.addr}
-          iso.euer          IN A      ${nets.internet.ip4.addr}
-          wg.euer           IN A      ${nets.internet.ip4.addr}
-          photostore        IN A      ${nets.internet.ip4.addr}
-          o.euer            IN A      ${nets.internet.ip4.addr}
-          mon.euer          IN A      ${nets.internet.ip4.addr}
-          boot.euer         IN A      ${nets.internet.ip4.addr}
-          wiki.euer         IN A      ${nets.internet.ip4.addr}
-          pigstarter        IN A      ${nets.internet.ip4.addr}
           cgit.euer         IN A      ${nets.internet.ip4.addr}
-          git.euer          IN A      ${nets.internet.ip4.addr}
-          euer              IN A      ${nets.internet.ip4.addr}
-          share.euer        IN A      ${nets.internet.ip4.addr}
-          gum               IN A      ${nets.internet.ip4.addr}
-          wikisearch        IN A      ${nets.internet.ip4.addr}
           dl.euer           IN A      ${nets.internet.ip4.addr}
-          ghook             IN A      ${nets.internet.ip4.addr}
           dockerhub         IN A      ${nets.internet.ip4.addr}
+          euer              IN A      ${nets.internet.ip4.addr}
+          ghook             IN A      ${nets.internet.ip4.addr}
+          git.euer          IN A      ${nets.internet.ip4.addr}
+          gold              IN A      ${nets.internet.ip4.addr}
+          graph             IN A      ${nets.internet.ip4.addr}
+          gum               IN A      ${nets.internet.ip4.addr}
+          iso.euer          IN A      ${nets.internet.ip4.addr}
+          mon.euer          IN A      ${nets.internet.ip4.addr}
+          netdata.euer      IN A      ${nets.internet.ip4.addr}
+          o.euer            IN A      ${nets.internet.ip4.addr}
+          photostore        IN A      ${nets.internet.ip4.addr}
+          pigstarter        IN A      ${nets.internet.ip4.addr}
+          share.euer        IN A      ${nets.internet.ip4.addr}
+          wg.euer           IN A      ${nets.internet.ip4.addr}
+          wiki.euer         IN A      ${nets.internet.ip4.addr}
+          wikisearch        IN A      ${nets.internet.ip4.addr}
           io                IN NS     gum.krebsco.de.
         '';
       };
@@ -596,7 +588,6 @@ in {
         };
         #wiregrill = {
         #  via = internet;
-        #  ip6.addr = "42:4200:0000:0000:0000:0000:0000:70d3";
         #  aliases = [
         #    "gum.w"
         #  ];
@@ -605,26 +596,26 @@ in {
         retiolum = {
           via = internet;
           ip4.addr = "10.243.0.213";
-          ip6.addr = "42:f9f0:0000:0000:0000:0000:0000:70d3";
           aliases = [
-            "nextgum.r"
-            "graph.r"
-            "cache.gum.r"
-            "logs.makefu.r"
-            "stats.makefu.r"
             "backup.makefu.r"
-            "dcpp.nextgum.r"
-            "gum.r"
-            "cgit.gum.r"
-            "o.gum.r"
-            "tracker.makefu.r"
-            "search.makefu.r"
-            "wiki.makefu.r"
-            "wiki.gum.r"
-            "blog.makefu.r"
             "blog.gum.r"
+            "blog.makefu.r"
+            "cache.gum.r"
+            "cgit.gum.r"
             "dcpp.gum.r"
+            "dcpp.nextgum.r"
+            "graph.r"
+            "gum.r"
+            "logs.makefu.r"
+            "netdata.makefu.r"
+            "nextgum.r"
+            "o.gum.r"
+            "search.makefu.r"
+            "stats.makefu.r"
             "torrent.gum.r"
+            "tracker.makefu.r"
+            "wiki.gum.r"
+            "wiki.makefu.r"
           ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -673,7 +664,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.205.131";
-          ip6.addr = "42:490d:cd82:d2bb:56d5:abd1:b88b:e8b4";
           aliases = [
             "shoney.r"
           ];
@@ -698,7 +688,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.83.237";
-          ip6.addr  = "42:af50:99cf:c185:f1a8:14d5:acb:8101";
           aliases = [
             "sdev.r"
           ];
@@ -736,7 +725,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.211.172";
-          ip6.addr = "42:472a:3d01:bbe4:4425:567e:592b:065d";
           aliases = [
             "flap.r"
           ];
@@ -759,7 +747,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.231.219";
-          ip6.addr = "42:f7bf:178d:4b68:1c1b:42e8:6b27:6a72";
           aliases = [
             "nukular.r"
           ];
@@ -782,7 +769,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.124.21";
-          ip6.addr = "42:9898:a8be:ce56:0ee3:b99c:42c5:109e";
           aliases = [
             "heidi.r"
           ];
@@ -872,7 +858,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.189.130";
-          ip6.addr = "42:c64e:011f:9755:31e1:c3e6:73c0:af2d";
           aliases = [
             "filebitch.r"
           ];
@@ -895,7 +880,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.26.29";
-          ip6.addr = "42:927a:3d59:1cb3:29d6:1a08:78d3:812e";
           aliases = [
             "excobridge.r"
           ];
@@ -918,7 +902,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.226.213";
-          ip6.addr = "42:432e:2379:0cd2:8486:f3b5:335a:5d83";
           aliases = [
             "horisa.r"
           ];
@@ -947,7 +930,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.57.85";
-          ip6.addr = "42:2f06:b899:a3b5:1dcf:51a4:a02b:8731";
           aliases = [
             "wooki.r"
           ];
@@ -970,7 +952,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.0.163";
-          ip6.addr = "42:b67b:5752:a730:5f28:d80d:6b37:5bda";
           aliases = [
             "senderechner.r"
           ];
@@ -995,7 +976,6 @@ in {
       nets = {
         retiolum = {
           ip4.addr = "10.243.144.142";
-          ip6.addr  = "42:4bf8:94b:eec5:69e2:c837:686e:f278";
           aliases = [
             "tcac-0-1.r"
           ];
@@ -1025,7 +1005,6 @@ in {
         };
         retiolum = {
           ip4.addr = "10.243.139.184";
-          ip6.addr = "42:d568:6106:ba30:753b:0f2a:8225:b1fb";
           aliases = [
             "muhbaasu.r"
           ];
@@ -1048,7 +1027,6 @@ in {
         nets = {
           retiolum = {
             ip4.addr = "10.243.183.236";
-            ip6.addr = "42:8ca8:d2e4:adf6:5c0f:38cb:e9ef:eb3c";
             aliases = [
               "tpsw.r"
             ];
diff --git a/krebs/3modules/makefu/ssh/ulrich.pub b/krebs/3modules/makefu/ssh/ulrich.pub
index 88313ee7c..8ac69004c 100644
--- a/krebs/3modules/makefu/ssh/ulrich.pub
+++ b/krebs/3modules/makefu/ssh/ulrich.pub
@@ -1 +1 @@
-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 shackspace.de@myvdr.de
+ssh-rsa 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 shackspace.de@myvdr.de
diff --git a/krebs/3modules/tinc_graphs.nix b/krebs/3modules/tinc_graphs.nix
index 8390eccbb..486a0c9cc 100644
--- a/krebs/3modules/tinc_graphs.nix
+++ b/krebs/3modules/tinc_graphs.nix
@@ -124,7 +124,7 @@ let
     };
 
     users.extraUsers.tinc_graphs = {
-      uid = genid "tinc_graphs";
+      uid = genid_uint31 "tinc_graphs";
       home = "/var/spool/tinc_graphs";
     };
     services.nginx = mkIf cfg.nginx.enable {
diff --git a/krebs/3modules/tv/default.nix b/krebs/3modules/tv/default.nix
index 71670d336..0683492bc 100644
--- a/krebs/3modules/tv/default.nix
+++ b/krebs/3modules/tv/default.nix
@@ -1,19 +1,24 @@
-{ config, ... }:
-
 with import <stockholm/lib>;
+{ config, ... }: let
 
-{
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    owner = config.krebs.users.tv;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum.ip6.addr =
+      (krebs.genipv6 "retiolum" "tv" { inherit hostName; }).address;
+  });
+
+in {
   dns.providers = {
     "viljetic.de" = "regfish";
   };
-  hosts = mapAttrs (_: setAttr "owner" config.krebs.users.tv) {
+  hosts = mapAttrs hostDefaults {
     alnus = {
       ci = true;
       cores = 2;
       nets = {
         retiolum = {
           ip4.addr = "10.243.21.1";
-          ip6.addr = "42::2101";
           aliases = [
             "alnus.r"
           ];
@@ -38,7 +43,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.20.1";
-          ip6.addr = "42::2001";
           aliases = [
             "mu.r"
           ];
@@ -79,7 +83,6 @@ with import <stockholm/lib>;
         retiolum = {
           via = config.krebs.hosts.ni.nets.internet;
           ip4.addr = "10.243.113.223";
-          ip6.addr = "42:4522:25f8:36bb:8ccb:150:231a:2af4";
           aliases = [
             "ni.r"
             "cgit.ni.r"
@@ -114,7 +117,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.0.110";
-          ip6.addr = "42:2d5:733f:d6da:c0f5:2bb7:2b18:9ec";
           aliases = [
             "nomic.r"
             "cgit.nomic.r"
@@ -158,7 +160,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.37";
-          ip6.addr = "42::1337";
           aliases = [
             "wu.r"
             "cgit.wu.r"
@@ -185,7 +186,6 @@ with import <stockholm/lib>;
       nets = {
         retiolum = {
           ip4.addr = "10.243.22.22";
-          ip6.addr = "42::2222";
           aliases = [
             "querel.r"
           ];
@@ -226,7 +226,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.38";
-          ip6.addr = "42::1338";
           aliases = [
             "xu.r"
             "cgit.xu.r"
@@ -261,7 +260,6 @@ with import <stockholm/lib>;
         };
         retiolum = {
           ip4.addr = "10.243.13.40";
-          ip6.addr = "42::1340";
           aliases = [
             "zu.r"
           ];
diff --git a/krebs/5pkgs/simple/cabal-read.nix b/krebs/5pkgs/simple/cabal-read.nix
new file mode 100644
index 000000000..f8fc71e05
--- /dev/null
+++ b/krebs/5pkgs/simple/cabal-read.nix
@@ -0,0 +1,35 @@
+{ writeHaskellPackage }:
+
+# Because `sed -n 's/.*\<ghc-options:\s\+\(.*\)/\1/p'` is too simple.
+writeHaskellPackage "cabal-read" {
+  executables.ghc-options = {
+    extra-depends = ["Cabal"];
+    text = /* haskell */ ''
+      module Main (main) where
+      import Data.List
+      import Data.Maybe
+      import Distribution.Compiler
+      import Distribution.PackageDescription.Parsec
+      import Distribution.Types.BuildInfo
+      import Distribution.Types.CondTree
+      import Distribution.Types.Executable
+      import Distribution.Types.GenericPackageDescription
+      import Distribution.Types.UnqualComponentName
+      import Distribution.Verbosity
+      import System.Environment
+      main :: IO ()
+      main = do
+          [path, name] <- getArgs
+
+          desc <- readGenericPackageDescription normal path
+
+          case lookup (mkUnqualComponentName name) (condExecutables desc) of
+            Just exe ->
+              putStrLn . intercalate " " . fromMaybe [] . lookup GHC
+                       . options . buildInfo . condTreeData $ exe
+
+            Nothing ->
+              error ("executable " <> name <> " not found in " <> path)
+    '';
+  };
+}
diff --git a/lass/1systems/archprism/config.nix b/lass/1systems/archprism/config.nix
index bed8961b8..0a2ab1611 100644
--- a/lass/1systems/archprism/config.nix
+++ b/lass/1systems/archprism/config.nix
@@ -6,26 +6,10 @@ with import <stockholm/lib>;
     <stockholm/lass>
     <stockholm/lass/2configs/retiolum.nix>
     <stockholm/lass/2configs/libvirt.nix>
-    {
-      services.nginx.enable = true;
-      imports = [
-        <stockholm/lass/2configs/websites/domsen.nix>
-        <stockholm/lass/2configs/websites/lassulus.nix>
-      ];
-      # needed by domsen.nix ^^
-      lass.usershadow = {
-        enable = true;
-      };
-
-      krebs.iptables.tables.filter.INPUT.rules = [
-         { predicate = "-p tcp --dport http"; target = "ACCEPT"; }
-         { predicate = "-p tcp --dport https"; target = "ACCEPT"; }
-      ];
-    }
     { # TODO make new hfos.nix out of this vv
       boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
       users.users.riot = {
-        uid = genid "riot";
+        uid = genid_uint31 "riot";
         isNormalUser = true;
         extraGroups = [ "libvirtd" ];
         openssh.authorizedKeys.keys = [
@@ -42,153 +26,7 @@ with import <stockholm/lib>;
         { v6 = false; precedence = 1000; predicate = "-d 46.4.114.243"; target = "DNAT --to-destination 192.168.122.179"; }
       ];
     }
-    {
-      users.users.tv = {
-        uid = genid "tv";
-        isNormalUser = true;
-        openssh.authorizedKeys.keys = [
-          config.krebs.users.tv.pubkey
-        ];
-      };
-      users.users.makefu = {
-        uid = genid "makefu";
-        isNormalUser = true;
-        openssh.authorizedKeys.keys = [
-          config.krebs.users.makefu.pubkey
-        ];
-      };
-      users.extraUsers.dritter = {
-        uid = genid "dritter";
-        isNormalUser = true;
-        extraGroups = [
-          "download"
-        ];
-        openssh.authorizedKeys.keys = [
-          "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDnqOWDDk7QkSAvrSLkEoz7dY22+xPyv5JDn2zlfUndfavmTMfZvPx9REMjgULbcCSM4m3Ncf40yUjciDpVleGoEz82+p/ObHAkVWPQyXRS3ZRM2IJJultBHEFc61+61Pi8k3p5pBhPPaig6VncJ4uUuuNqen9jqLesSTVXNtdntU2IvnC8B8k1Kq6fu9q1T2yEOMxkD31D5hVHlqAly0LdRiYvtsRIoCSmRvlpGl70uvPprhQxhtoiEUeDqmIL7BG9x7gU0Swdl7R0/HtFXlFuOwSlNYDmOf/Zrb1jhOpj4AlCliGUkM0iKIJhgH0tnJna6kfkGKHDwuzITGIh6SpZ dritter@Janeway"
-        ];
-      };
-      users.extraUsers.juhulian = {
-        uid = 1339;
-        isNormalUser = true;
-        openssh.authorizedKeys.keys = [
-          "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDBQhLGvfv4hyQ/nqJGy1YgHXPSVl6igeWTroJSvAhUFgoh+rG+zvqY0EahKXNb3sq0/OYDCTJVuucc0hgCg7T2KqTqMtTb9EEkRmCFbD7F7DWZojCrh/an6sHneqT5eFvzAPZ8E5hup7oVQnj5P5M3I9keRHBWt1rq6q0IcOEhsFvne4qJc73aLASTJkxzlo5U8ju3JQOl6474ECuSn0lb1fTrQ/SR1NgF7jV11eBldkS8SHEB+2GXjn4Yrn+QUKOnDp+B85vZmVlJSI+7XR1/U/xIbtAjGTEmNwB6cTbBv9NCG9jloDDOZG4ZvzzHYrlBXjaigtQh2/4mrHoKa5eV juhulian@juhulian"
-        ];
-      };
-      users.users.hellrazor = {
-        uid = genid "hellrazor";
-        isNormalUser = true;
-        extraGroups = [
-          "download"
-        ];
-        openssh.authorizedKeys.keys = [ "ssh-rsa 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" ];
-      };
-    }
-    {
-      #hotdog
-      systemd.services."container@hotdog".reloadIfChanged = mkForce false;
-      containers.hotdog = {
-        config = { ... }: {
-          imports = [ <stockholm/lass/2configs/rebuild-on-boot.nix> ];
-          environment.systemPackages = [ pkgs.git ];
-          services.openssh.enable = true;
-          users.users.root.openssh.authorizedKeys.keys = [
-            config.krebs.users.lass.pubkey
-          ];
-        };
-        autoStart = true;
-        enableTun = true;
-        privateNetwork = true;
-        hostAddress = "10.233.2.1";
-        localAddress = "10.233.2.2";
-      };
-    }
-    <stockholm/lass/2configs/exim-smarthost.nix>
-    <stockholm/lass/2configs/ts3.nix>
-    <stockholm/lass/2configs/privoxy-retiolum.nix>
-    <stockholm/lass/2configs/radio.nix>
-    <stockholm/lass/2configs/binary-cache/server.nix>
-    <stockholm/lass/2configs/iodined.nix>
-    <stockholm/lass/2configs/paste.nix>
-    <stockholm/lass/2configs/syncthing.nix>
-    <stockholm/lass/2configs/ciko.nix>
     <stockholm/lass/2configs/container-networking.nix>
-    <stockholm/lass/2configs/monitoring/prometheus-server.nix>
-    { # quasi bepasty.nix
-      imports = [
-        <stockholm/lass/2configs/bepasty.nix>
-      ];
-      krebs.bepasty.servers."paste.r".nginx.extraConfig = ''
-        if ( $server_addr = "${config.krebs.build.host.nets.internet.ip4.addr}" ) {
-          return 403;
-        }
-      '';
-    }
-    {
-      services.tor = {
-        enable = true;
-      };
-    }
-    {
-      lass.ejabberd = {
-        enable = true;
-        hosts = [ "lassul.us" ];
-      };
-      krebs.iptables.tables.filter.INPUT.rules = [
-        { predicate = "-p tcp --dport xmpp-client"; target = "ACCEPT"; }
-        { predicate = "-p tcp --dport xmpp-server"; target = "ACCEPT"; }
-      ];
-    }
-    {
-      imports = [
-        <stockholm/lass/2configs/realwallpaper.nix>
-      ];
-      services.nginx.virtualHosts."lassul.us".locations."/wallpaper.png".extraConfig = ''
-        alias /var/realwallpaper/realwallpaper.png;
-      '';
-    }
-    {
-      users.users.jeschli = {
-        uid = genid "jeschli";
-        isNormalUser = true;
-        openssh.authorizedKeys.keys = with config.krebs.users; [
-          jeschli.pubkey
-          jeschli-bln.pubkey
-          jeschli-bolide.pubkey
-          jeschli-brauerei.pubkey
-        ];
-      };
-      krebs.git.rules = [
-        {
-          user = with config.krebs.users; [
-            jeschli
-            jeschli-bln
-            jeschli-bolide
-            jeschli-brauerei
-          ];
-          repo = [ config.krebs.git.repos.xmonad-stockholm ];
-          perm = with git; push "refs/heads/jeschli*" [ fast-forward non-fast-forward create delete merge ];
-        }
-        {
-          user = with config.krebs.users; [
-            jeschli
-            jeschli-bln
-            jeschli-bolide
-            jeschli-brauerei
-          ];
-          repo = [ config.krebs.git.repos.stockholm ];
-          perm = with git; push "refs/heads/staging/jeschli*" [ fast-forward non-fast-forward create delete merge ];
-        }
-      ];
-    }
-    {
-      krebs.repo-sync.repos.stockholm.timerConfig = {
-        OnBootSec = "5min";
-        OnUnitInactiveSec = "2min";
-        RandomizedDelaySec = "2min";
-      };
-    }
-    <stockholm/lass/2configs/downloading.nix>
-    <stockholm/lass/2configs/minecraft.nix>
     {
       services.taskserver = {
         enable = true;
@@ -201,123 +39,11 @@ with import <stockholm/lib>;
         { predicate = "-p tcp --dport 53589"; target = "ACCEPT"; }
       ];
     }
-    #<stockholm/lass/2configs/go.nix>
-    {
-      environment.systemPackages = [ pkgs.cryptsetup ];
-      systemd.services."container@red".reloadIfChanged = mkForce false;
-      containers.red = {
-        config = { ... }: {
-          environment.systemPackages = [ pkgs.git ];
-          services.openssh.enable = true;
-          users.users.root.openssh.authorizedKeys.keys = [
-            config.krebs.users.lass.pubkey
-          ];
-        };
-        autoStart = false;
-        enableTun = true;
-        privateNetwork = true;
-        hostAddress = "10.233.2.3";
-        localAddress = "10.233.2.4";
-      };
-      services.nginx.virtualHosts."rote-allez-fraktion.de" = {
-        enableACME = true;
-        forceSSL = true;
-        locations."/" = {
-          extraConfig = ''
-            proxy_set_header Host rote-allez-fraktion.de;
-            proxy_pass http://10.233.2.4;
-          '';
-        };
-      };
-    }
-    #{
-    #  imports = [ <stockholm/lass/2configs/backup.nix> ];
-    #  lass.restic = genAttrs [
-    #    "daedalus"
-    #    "icarus"
-    #    "littleT"
-    #    "mors"
-    #    "shodan"
-    #    "skynet"
-    #  ] (dest: {
-    #    dirs = [
-    #      "/home/chat/.weechat"
-    #      "/bku/sql_dumps"
-    #    ];
-    #    passwordFile = (toString <secrets>) + "/restic/${dest}";
-    #    repo = "sftp:backup@${dest}.r:/backups/prism";
-    #    extraArguments = [
-    #      "sftp.command='ssh backup@${dest}.r -i ${config.krebs.build.host.ssh.privkey.path} -s sftp'"
-    #    ];
-    #    timerConfig = {
-    #      OnCalendar = "00:05";
-    #      RandomizedDelaySec = "5h";
-    #    };
-    #  });
-    #}
-    {
-      users.users.download.openssh.authorizedKeys.keys = [
-        "ssh-rsa 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 lhebendanz@nixos"
-        "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACADLPxtB2f2tocXHxD3ul9D1537hTht6/un87JYZNnoYABveasyIcdFIfp5lPJmj3PjwqXNTA4M/3V+ufrpZ91dxFeXWI5mOI4YB3xRu+Elja8g7nfvCz1HrH3sD1equos/7ltQ1GZYvHGw40qD1/ZtOODwRwrYJ7l/DUBrjk/tzXRjm0+ZgyQsb3G9a80cA8d3fiuQDxbAzdoJF46wt36ZfuSMpJ/Td8CbCoLlV/uL9QZemOglyxNxR607qGfRNXF1An+P+fFq24GmdHpMJ00DfjZ/dJRL9QSs7vd07uyB4Qty4VHwRhc46XH6KL7VTF1D3INF/BeBZx90GBxOvpgEji7Zrf7O5eSAjM2Do1+t+Ev2IIuiltB+QqTir4rZcrCBrJ2+zD3DDymKffVi8sz15AvdrFkIplzZxpOcgm9Ns2w/uh8sxeV6J58aoLEVmd2KRUfJFYiS1EuEjYo2OHlj8ltIh3VlfYdWksGpQc71IT0iEWvzvjYcfCda9uzFLKdLfBy4GB8+s4zR2CX9aGDyJaIY1kt/xqDeztnYwW1owG+fLMrDJlq3Mu+KmJljb30jzrOPhFYVZgWenmMFgH2RBzVEmnsR0f2LFVLj6N/a9fpEJ3WhxMOc5Ybdpgg/l9KUdgvWLk6KOtba+z9fuYT1YgwtZBoMgHAdZLmZ/DGtff palo@pepe"
-        "ssh-rsa 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 palo@workhorse"
-      ];
-    }
-    {
-    }
-    {
-      lass.nichtparasoup.enable = true;
-      services.nginx = {
-        enable = true;
-        virtualHosts."lol.lassul.us" = {
-          forceSSL = true;
-          enableACME = true;
-          locations."/".extraConfig = ''
-            proxy_pass http://localhost:5001;
-          '';
-        };
-      };
-    }
-    {
-      krebs.iptables.tables.filter.INPUT.rules = [
-         { predicate = "-p udp --dport 51820"; target = "ACCEPT"; }
-      ];
-      krebs.iptables.tables.nat.PREROUTING.rules = [
-        { v6 = false; precedence = 1000; predicate = "-s 10.244.1.0/24"; target = "ACCEPT"; }
-      ];
-      krebs.iptables.tables.filter.FORWARD.rules = [
-        { v6 = false; precedence = 1000; predicate = "-s 10.244.1.0/24"; target = "ACCEPT"; }
-        { v6 = false; precedence = 1000; predicate = "-s 10.243.0.0/16 -d 10.244.1.0/24"; target = "ACCEPT"; }
-      ];
-      krebs.iptables.tables.nat.POSTROUTING.rules = [
-        { v6 = false; predicate = "-s 10.244.1.0/24 ! -d 10.244.1.0/24"; target = "MASQUERADE"; }
-      ];
-      networking.wireguard.interfaces.wg0 = {
-        ips = [ "10.244.1.1/24" ];
-        listenPort = 51820;
-        privateKeyFile = (toString <secrets>) + "/wireguard.key";
-        allowedIPsAsRoutes = true;
-        peers = [
-          {
-            # lass-android
-            allowedIPs = [ "10.244.1.2/32" ];
-            publicKey = "zVunBVOxsMETlnHkgjfH71HaZjjNUOeYNveAVv5z3jw=";
-          }
-        ];
-      };
-    }
     {
       krebs.iptables.tables.filter.INPUT.rules = [
         { predicate = "-p udp --dport 60000:61000"; target = "ACCEPT";}
       ];
     }
-    {
-      services.murmur.enable = true;
-      services.murmur.registerName = "lassul.us";
-      krebs.iptables.tables.filter.INPUT.rules = [
-        { predicate = "-p tcp --dport 64738"; target = "ACCEPT";}
-      ];
-
-    }
   ];
 
   krebs.build.host = config.krebs.hosts.archprism;
diff --git a/lass/1systems/littleT/config.nix b/lass/1systems/littleT/config.nix
index 44617d3e7..7fe143c3c 100644
--- a/lass/1systems/littleT/config.nix
+++ b/lass/1systems/littleT/config.nix
@@ -6,52 +6,11 @@ with import <stockholm/lib>;
     <stockholm/lass>
 
     <stockholm/lass/2configs/retiolum.nix>
-    <stockholm/lass/2configs/backup.nix>
-    <stockholm/lass/2configs/steam.nix>
-    {
-      users.users.blacky = {
-        uid = genid "blacky";
-        home = "/home/blacky";
-        group = "users";
-        createHome = true;
-        extraGroups = [
-          "audio"
-          "networkmanager"
-          "video"
-        ];
-        useDefaultShell = true;
-      };
-      networking.networkmanager.enable = true;
-      networking.wireless.enable = mkForce false;
-      hardware.pulseaudio = {
-        enable = true;
-        systemWide = true;
-      };
-      environment.systemPackages = with pkgs; [
-        pavucontrol
-        chromium
-        hexchat
-        networkmanagerapplet
-        vlc
-      ];
-      services.xserver.enable = true;
-      services.xserver.displayManager.lightdm.enable = true;
-      services.xserver.desktopManager.plasma5.enable = true;
-      services.xserver.layout = "de";
-      users.mutableUsers = mkForce true;
-      services.xserver.synaptics.enable = true;
-    }
-    {
-      #remote control
-      environment.systemPackages = with pkgs; [
-        x11vnc
-      ];
-      krebs.iptables.tables.filter.INPUT.rules = [
-        { predicate = "-p tcp -i retiolum --dport 5900"; target = "ACCEPT"; }
-      ];
-    }
+    <stockholm/lass/2configs/blue-host.nix>
   ];
 
+  networking.networkmanager.enable = true;
+  networking.wireless.enable = mkForce false;
   time.timeZone = "Europe/Berlin";
 
   hardware.trackpoint = {
diff --git a/lass/1systems/littleT/physical.nix b/lass/1systems/littleT/physical.nix
index 9776211ae..550f058a8 100644
--- a/lass/1systems/littleT/physical.nix
+++ b/lass/1systems/littleT/physical.nix
@@ -1,7 +1,25 @@
 {
   imports = [
     ./config.nix
-    <stockholm/lass/2configs/hw/x220.nix>
-    <stockholm/lass/2configs/boot/stock-x220.nix>
+    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
   ];
+  fileSystems."/" =
+    { device = "rpool/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/5B2E-3734";
+      fsType = "vfat";
+    };
+  boot.loader.grub.enable = true;
+  boot.loader.grub.version = 2;
+  boot.loader.grub.efiSupport = true;
+  boot.loader.grub.efiInstallAsRemovable = true;
+  boot.loader.grub.device = "nodev";
+  networking.hostId = "584248c6";
+
+  boot.initrd.availableKernelModules = [ "ehci_pci" "ahci" "usb_storage" "sd_mod" "sdhci_pci" ];
+  boot.kernelModules = [ "kvm-intel" ];
+
 }
diff --git a/lass/1systems/morpheus/config.nix b/lass/1systems/morpheus/config.nix
new file mode 100644
index 000000000..0d82ba611
--- /dev/null
+++ b/lass/1systems/morpheus/config.nix
@@ -0,0 +1,33 @@
+{ config, pkgs, ... }:
+with import <stockholm/lib>;
+{
+  imports = [
+    <stockholm/lass>
+
+    <stockholm/lass/2configs/retiolum.nix>
+    <stockholm/lass/2configs/power-action.nix>
+    <stockholm/lass/2configs/baseX.nix>
+    <stockholm/lass/2configs/games.nix>
+    <stockholm/lass/2configs/steam.nix>
+  ];
+
+  krebs.build.host = config.krebs.hosts.morpheus;
+
+  networking.wireless.enable = false;
+  networking.networkmanager.enable = true;
+
+  services.logind.extraConfig = ''
+    HandleLidSwitch=ignore
+  '';
+
+  nixpkgs.config.packageOverrides = super: {
+    steam = super.steam.override {
+      withPrimus = true;
+      extraPkgs = p: with p; [
+        glxinfo
+        nettools
+        bumblebee
+      ];
+    };
+  };
+}
diff --git a/lass/1systems/morpheus/physical.nix b/lass/1systems/morpheus/physical.nix
new file mode 100644
index 000000000..0f08acb2d
--- /dev/null
+++ b/lass/1systems/morpheus/physical.nix
@@ -0,0 +1,32 @@
+{ lib, ... }:
+{
+  imports = [
+    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
+    ./config.nix
+  ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  networking.hostId = "60ce7e88";
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelParams = [ "acpi_osi=!" ''acpi_osi="Windows 2009"'' ];
+
+  hardware.bumblebee.enable = true;
+  hardware.bumblebee.group = "video";
+
+  fileSystems."/" =
+    { device = "rpool/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/DF3B-4528";
+      fsType = "vfat";
+    };
+
+  nix.maxJobs = lib.mkDefault 8;
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+}
diff --git a/lass/1systems/mors/config.nix b/lass/1systems/mors/config.nix
index 207c7c640..46cdbbb66 100644
--- a/lass/1systems/mors/config.nix
+++ b/lass/1systems/mors/config.nix
@@ -34,6 +34,7 @@ with import <stockholm/lib>;
     <stockholm/lass/2configs/backup.nix>
     <stockholm/lass/2configs/print.nix>
     <stockholm/lass/2configs/blue-host.nix>
+    <stockholm/lass/2configs/network-manager.nix>
     {
       krebs.iptables.tables.filter.INPUT.rules = [
         #risk of rain
diff --git a/lass/1systems/prism/config.nix b/lass/1systems/prism/config.nix
index 0ca39447d..6c454b4ac 100644
--- a/lass/1systems/prism/config.nix
+++ b/lass/1systems/prism/config.nix
@@ -25,7 +25,7 @@ with import <stockholm/lib>;
     { # TODO make new hfos.nix out of this vv
       boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
       users.users.riot = {
-        uid = genid "riot";
+        uid = genid_uint31 "riot";
         isNormalUser = true;
         extraGroups = [ "libvirtd" ];
         openssh.authorizedKeys.keys = [
@@ -44,21 +44,21 @@ with import <stockholm/lib>;
     }
     {
       users.users.tv = {
-        uid = genid "tv";
+        uid = genid_uint31 "tv";
         isNormalUser = true;
         openssh.authorizedKeys.keys = [
           config.krebs.users.tv.pubkey
         ];
       };
       users.users.makefu = {
-        uid = genid "makefu";
+        uid = genid_uint31 "makefu";
         isNormalUser = true;
         openssh.authorizedKeys.keys = [
           config.krebs.users.makefu.pubkey
         ];
       };
       users.extraUsers.dritter = {
-        uid = genid "dritter";
+        uid = genid_uint31 "dritter";
         isNormalUser = true;
         extraGroups = [
           "download"
@@ -75,7 +75,7 @@ with import <stockholm/lib>;
         ];
       };
       users.users.hellrazor = {
-        uid = genid "hellrazor";
+        uid = genid_uint31 "hellrazor";
         isNormalUser = true;
         extraGroups = [
           "download"
@@ -168,7 +168,7 @@ with import <stockholm/lib>;
     }
     {
       users.users.jeschli = {
-        uid = genid "jeschli";
+        uid = genid_uint31 "jeschli";
         isNormalUser = true;
         openssh.authorizedKeys.keys = with config.krebs.users; [
           jeschli.pubkey
@@ -297,31 +297,30 @@ with import <stockholm/lib>;
       };
     }
     {
-      krebs.iptables.tables.filter.INPUT.rules = [
-         { predicate = "-p udp --dport 51820"; target = "ACCEPT"; }
+      imports = [
+        <stockholm/lass/2configs/wiregrill.nix>
       ];
       krebs.iptables.tables.nat.PREROUTING.rules = [
         { v6 = false; precedence = 1000; predicate = "-s 10.244.1.0/24"; target = "ACCEPT"; }
+        { v4 = false; precedence = 1000; predicate = "-s 42:1::/32"; target = "ACCEPT"; }
       ];
       krebs.iptables.tables.filter.FORWARD.rules = [
-        { v6 = false; precedence = 1000; predicate = "-s 10.244.1.0/24"; target = "ACCEPT"; }
-        { v6 = false; precedence = 1000; predicate = "-s 10.243.0.0/16 -d 10.244.1.0/24"; target = "ACCEPT"; }
+        { precedence = 1000; predicate = "-i wiregrill -o retiolum"; target = "ACCEPT"; }
+        { precedence = 1000; predicate = "-i retiolum -o wiregrill"; target = "ACCEPT"; }
       ];
       krebs.iptables.tables.nat.POSTROUTING.rules = [
+        { v4 = false; predicate = "-s 42:1:ce16::/48 ! -d 42:1:ce16::48"; target = "MASQUERADE"; }
         { v6 = false; predicate = "-s 10.244.1.0/24 ! -d 10.244.1.0/24"; target = "MASQUERADE"; }
       ];
-      networking.wireguard.interfaces.wg0 = {
-        ips = [ "10.244.1.1/24" ];
-        listenPort = 51820;
-        privateKeyFile = (toString <secrets>) + "/wireguard.key";
-        allowedIPsAsRoutes = true;
-        peers = [
-          {
-            # lass-android
-            allowedIPs = [ "10.244.1.2/32" ];
-            publicKey = "zVunBVOxsMETlnHkgjfH71HaZjjNUOeYNveAVv5z3jw=";
-          }
-        ];
+      services.dnsmasq = {
+        enable = true;
+        resolveLocalQueries = false;
+
+        extraConfig= ''
+          listen-address=42:1:ce16::1
+          except-interface=lo
+          interface=wg0
+        '';
       };
     }
     {
diff --git a/lass/1systems/shodan/config.nix b/lass/1systems/shodan/config.nix
index 87a733d62..39c0791fc 100644
--- a/lass/1systems/shodan/config.nix
+++ b/lass/1systems/shodan/config.nix
@@ -8,11 +8,9 @@ with import <stockholm/lib>;
     <stockholm/lass/2configs/mouse.nix>
     <stockholm/lass/2configs/retiolum.nix>
     <stockholm/lass/2configs/baseX.nix>
-    <stockholm/lass/2configs/git.nix>
     <stockholm/lass/2configs/exim-retiolum.nix>
     <stockholm/lass/2configs/browsers.nix>
     <stockholm/lass/2configs/programs.nix>
-    <stockholm/lass/2configs/fetchWallpaper.nix>
     <stockholm/lass/2configs/wine.nix>
     <stockholm/lass/2configs/bitcoin.nix>
     <stockholm/lass/2configs/backup.nix>
diff --git a/lass/1systems/skynet/config.nix b/lass/1systems/skynet/config.nix
index 13a8b3e41..4b806af7b 100644
--- a/lass/1systems/skynet/config.nix
+++ b/lass/1systems/skynet/config.nix
@@ -5,7 +5,6 @@ with import <stockholm/lib>;
     <stockholm/lass>
 
     <stockholm/lass/2configs/retiolum.nix>
-    <stockholm/lass/2configs/fetchWallpaper.nix>
     <stockholm/lass/2configs/blue-host.nix>
     <stockholm/lass/2configs/power-action.nix>
     {
diff --git a/lass/1systems/xerxes/config.nix b/lass/1systems/xerxes/config.nix
deleted file mode 100644
index 1bd6cf2c5..000000000
--- a/lass/1systems/xerxes/config.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    <stockholm/lass>
-
-    <stockholm/lass/2configs/retiolum.nix>
-    <stockholm/lass/2configs/exim-retiolum.nix>
-    <stockholm/lass/2configs/baseX.nix>
-    <stockholm/lass/2configs/browsers.nix>
-    <stockholm/lass/2configs/programs.nix>
-    <stockholm/lass/2configs/fetchWallpaper.nix>
-  ];
-
-  krebs.build.host = config.krebs.hosts.xerxes;
-}
diff --git a/lass/1systems/xerxes/physical.nix b/lass/1systems/xerxes/physical.nix
deleted file mode 100644
index 17caccfe6..000000000
--- a/lass/1systems/xerxes/physical.nix
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-  imports = [
-    ./config.nix
-    <stockholm/lass/2configs/hw/gpd-pocket.nix>
-    <stockholm/lass/2configs/boot/stock-x220.nix>
-  ];
-  services.udev.extraRules = ''
-    SUBSYSTEM=="net", ATTR{address}=="b0:f1:ec:9f:5c:78", NAME="wl0"
-  '';
-
-  fileSystems."/" = {
-    device = "/dev/disk/by-uuid/d227d88f-bd24-4e8a-aa14-9e966b471437";
-    fsType = "btrfs";
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/16C8-D053";
-    fsType = "vfat";
-  };
-
-  fileSystems."/home" = {
-    device = "/dev/disk/by-uuid/1ec4193b-7f41-490d-8782-7677d437b358";
-    fsType = "btrfs";
-  };
-
-  boot.initrd.luks.devices = [ { name = "luksroot"; device = "/dev/disk/by-uuid/d17f19a3-dcba-456d-b5da-e45cc15dc9c8"; } ];
-
-  networking.wireless.enable = true;
-}
diff --git a/lass/1systems/yellow/config.nix b/lass/1systems/yellow/config.nix
index 48d405111..58fa564a1 100644
--- a/lass/1systems/yellow/config.nix
+++ b/lass/1systems/yellow/config.nix
@@ -19,7 +19,11 @@ with import <stockholm/lib>;
   users.groups.download.members = [ "transmission" ];
   users.users.transmission.group = mkForce "download";
 
-  systemd.services.transmission.serviceConfig.bindsTo = [ "openvpn-nordvpn.service" ];
+  systemd.services.transmission.bindsTo = [ "openvpn-nordvpn.service" ];
+  systemd.services.transmission.after = [ "openvpn-nordvpn.service" ];
+  systemd.services.transmission.postStart = ''
+    chmod 775 /var/download/finished
+  '';
   services.transmission = {
     enable = true;
     settings = {
@@ -34,10 +38,40 @@ with import <stockholm/lib>;
 
   services.nginx = {
     enable = true;
-    virtualHosts."yellow.r".locations."/dl".extraConfig = ''
-      autoindex on;
-      alias /var/download/finished;
-    '';
+    package = pkgs.nginx.override {
+      modules = with pkgs.nginxModules; [
+        fancyindex
+      ];
+    };
+    virtualHosts."dl" = {
+      default = true;
+      locations."/Nginx-Fancyindex-Theme-dark" = {
+        extraConfig = ''
+          alias ${pkgs.fetchFromGitHub {
+            owner = "Naereen";
+            repo = "Nginx-Fancyindex-Theme";
+            rev = "e84f7d6a32085c2b6238f85f5fdebe9ceb710fc4";
+            sha256 = "0wzl4ws2w8f0749vxfd1c8c21p3jw463wishgfcmaljbh4dwplg6";
+          }}/Nginx-Fancyindex-Theme-dark;
+          autoindex on;
+        '';
+      };
+      locations."/dl".extraConfig = ''
+        return 301 /;
+      '';
+      locations."/" = {
+        root = "/var/download/finished";
+        extraConfig = ''
+          fancyindex on;
+          fancyindex_header "/Nginx-Fancyindex-Theme-dark/header.html";
+          fancyindex_footer "/Nginx-Fancyindex-Theme-dark/footer.html";
+          dav_methods PUT DELETE MKCOL COPY MOVE;
+
+          create_full_put_path on;
+          dav_access all:r;
+        '';
+      };
+    };
   };
 
   krebs.iptables = {
diff --git a/lass/2configs/baseX.nix b/lass/2configs/baseX.nix
index d781f8c71..1b6a1d593 100644
--- a/lass/2configs/baseX.nix
+++ b/lass/2configs/baseX.nix
@@ -9,7 +9,6 @@ in {
     ./power-action.nix
     ./copyq.nix
     ./urxvt.nix
-    ./network-manager.nix
     {
       hardware.pulseaudio = {
         enable = true;
@@ -65,6 +64,7 @@ in {
     dic
     dmenu
     font-size
+    fzfmenu
     gitAndTools.qgit
     git-preview
     gnome3.dconf
@@ -97,9 +97,9 @@ in {
     enable = true;
     layout = "us";
     display = mkForce 0;
-    xkbModel = "evdev";
     xkbVariant = "altgr-intl";
-    xkbOptions = "caps:backspace";
+    xkbOptions = "caps:escape";
+    libinput.enable = true;
     displayManager.lightdm.enable = true;
     windowManager.default = "xmonad";
     windowManager.session = [{
diff --git a/lass/2configs/blue-host.nix b/lass/2configs/blue-host.nix
index 9cf294afd..718a92e9c 100644
--- a/lass/2configs/blue-host.nix
+++ b/lass/2configs/blue-host.nix
@@ -7,6 +7,7 @@ let
     "daedalus"
     "skynet"
     "prism"
+    "littleT"
   ];
   remote_hosts = filter (h: h != config.networking.hostName) all_hosts;
 
diff --git a/lass/2configs/blue.nix b/lass/2configs/blue.nix
index 4d4a92eb9..cdd77e847 100644
--- a/lass/2configs/blue.nix
+++ b/lass/2configs/blue.nix
@@ -22,7 +22,9 @@ with (import <stockholm/lib>);
 
   krebs.iptables.tables.filter.INPUT.rules = [
     { predicate = "-i retiolum -p udp --dport 60000:61000"; target = "ACCEPT";}
+    { predicate = "-i wiregrill -p udp --dport 60000:61000"; target = "ACCEPT";}
     { predicate = "-i retiolum -p tcp --dport 9999"; target = "ACCEPT";}
+    { predicate = "-i wiregrill -p tcp --dport 9999"; target = "ACCEPT";}
   ];
 
   systemd.services.chat = let
diff --git a/lass/2configs/browsers.nix b/lass/2configs/browsers.nix
index 425e0ee13..d214e224d 100644
--- a/lass/2configs/browsers.nix
+++ b/lass/2configs/browsers.nix
@@ -45,7 +45,7 @@ let
 
   createFirefoxUser = name: groups: precedence:
     createUser (pkgs.writeDash name ''
-      ${pkgs.firefox-devedition-bin}/bin/firefox-devedition "$@"
+      ${pkgs.firefox}/bin/firefox "$@"
     '') name groups precedence 80;
 
   createQuteUser = name: groups: precedence:
@@ -89,8 +89,8 @@ in {
         }));
       };
     }
-    ( createQuteUser "qb" [ "audio" ] 20 )
-    ( createFirefoxUser "ff" [ "audio" ] 10 )
+    ( createFirefoxUser "ff" [ "audio" ] 11 )
+    ( createQuteUser "qb" [ "audio" ] 10 )
     ( createChromiumUser "cr" [ "audio" "video" ] 9 )
     ( createChromiumUser "gm" [ "video" "audio" ] 8 )
     ( createChromiumUser "wk" [ "audio" ] 0 )
diff --git a/lass/2configs/default.nix b/lass/2configs/default.nix
index a43113177..62a42baf9 100644
--- a/lass/2configs/default.nix
+++ b/lass/2configs/default.nix
@@ -10,6 +10,7 @@ with import <stockholm/lib>;
     ./zsh.nix
     ./htop.nix
     ./security-workarounds.nix
+    ./wiregrill.nix
     {
       users.extraUsers =
         mapAttrs (_: h: { hashedPassword = h; })
diff --git a/lass/2configs/exim-smarthost.nix b/lass/2configs/exim-smarthost.nix
index 1ee45bb41..1acfe5056 100644
--- a/lass/2configs/exim-smarthost.nix
+++ b/lass/2configs/exim-smarthost.nix
@@ -94,6 +94,7 @@ with import <stockholm/lib>;
       { from = "osmocom@lassul.us"; to = lass.mail; }
       { from = "lesswrong@lassul.us"; to = lass.mail; }
       { from = "nordvpn@lassul.us"; to = lass.mail; }
+      { from = "csv-direct@lassul.us"; to = lass.mail; }
     ];
     system-aliases = [
       { from = "mailer-daemon"; to = "postmaster"; }
diff --git a/lass/2configs/games.nix b/lass/2configs/games.nix
index 49602898e..62e3f6d52 100644
--- a/lass/2configs/games.nix
+++ b/lass/2configs/games.nix
@@ -57,6 +57,7 @@ let
 
 in {
   environment.systemPackages = with pkgs; [
+    dolphinEmu
     doom1
     doom2
     vdoom1
diff --git a/lass/2configs/git.nix b/lass/2configs/git.nix
index 62173e33f..7650f4294 100644
--- a/lass/2configs/git.nix
+++ b/lass/2configs/git.nix
@@ -154,7 +154,7 @@ let
     public = true;
   };
 
-  make-restricted-repo = name: { admins ? [], collaborators ? [], announce ? false, hooks ? {}, ... }: {
+  make-restricted-repo = name: { admins ? [], collaborators ? [], announce ? true, hooks ? {}, ... }: {
     inherit admins collaborators name;
     public = false;
     hooks = {
diff --git a/lass/2configs/mail.nix b/lass/2configs/mail.nix
index 36e797a96..21b9d7b49 100644
--- a/lass/2configs/mail.nix
+++ b/lass/2configs/mail.nix
@@ -82,7 +82,7 @@ let
     source ${pkgs.neomutt}/share/doc/neomutt/samples/gpg.rc
     set pgp_use_gpg_agent = yes
     set pgp_sign_as = 0xDC2A43EF4F11E854B44D599A89E82952976A7E4D
-    set crypt_autosign = yes
+    set crypt_autosign = no
     set crypt_replyencrypt = yes
     set crypt_verify_sig = yes
     set pgp_verify_command = "gpg --no-verbose --batch --output - --verify %s %f"
diff --git a/lass/2configs/mouse.nix b/lass/2configs/mouse.nix
index 098809d62..f5f9319ed 100644
--- a/lass/2configs/mouse.nix
+++ b/lass/2configs/mouse.nix
@@ -1,4 +1,4 @@
-{ ... }:
+{ lib, ... }:
 {
   hardware.trackpoint = {
     enable = true;
@@ -7,6 +7,7 @@
     emulateWheel = true;
   };
 
+  services.xserver.libinput.enable = lib.mkForce false;
   services.xserver.synaptics = {
     enable = true;
     horizEdgeScroll = false;
diff --git a/lass/2configs/radio.nix b/lass/2configs/radio.nix
index 85faded14..987632cd1 100644
--- a/lass/2configs/radio.nix
+++ b/lass/2configs/radio.nix
@@ -5,7 +5,6 @@ with import <stockholm/lib>;
 let
   name = "radio";
   mainUser = config.users.extraUsers.mainUser;
-  inherit (import <stockholm/lib>) genid;
 
   admin-password = import <secrets/icecast-admin-pw>;
   source-password = import <secrets/icecast-source-pw>;
@@ -31,7 +30,7 @@ in {
     "${name}" = rec {
       inherit name;
       group = name;
-      uid = genid name;
+      uid = genid_uint31 name;
       description = "radio manager";
       home = "/home/${name}";
       useDefaultShell = true;
diff --git a/lass/2configs/websites/domsen.nix b/lass/2configs/websites/domsen.nix
index 4935268a4..ce7df4bfb 100644
--- a/lass/2configs/websites/domsen.nix
+++ b/lass/2configs/websites/domsen.nix
@@ -126,6 +126,7 @@ in {
       { from = "ubik@ubikmedia.eu"; to = "domsen, jms, ms"; }
       { from = "akayguen@freemonkey.art"; to ="akayguen"; }
       { from = "bui@freemonkey.art"; to ="bui"; }
+      { from = "kontakt@alewis.de"; to ="klabusterbeere"; }
 
       { from = "testuser@lassul.us"; to = "testuser"; }
       { from = "testuser@ubikmedia.eu"; to = "testuser"; }
@@ -204,5 +205,12 @@ in {
     createHome = true;
   };
 
+  users.users.klabusterbeere = {
+    uid = genid_uint31 "klabusterbeere";
+    home = "/home/klabusterbeere";
+    useDefaultShell = true;
+    createHome = true;
+  };
+
 }
 
diff --git a/lass/2configs/websites/lassulus.nix b/lass/2configs/websites/lassulus.nix
index 6470d86f7..17af0d00d 100644
--- a/lass/2configs/websites/lassulus.nix
+++ b/lass/2configs/websites/lassulus.nix
@@ -3,7 +3,7 @@
 with lib;
 let
   inherit (import <stockholm/lib>)
-    genid
+    genid_uint31
   ;
 
 in {
@@ -22,7 +22,7 @@ in {
   krebs.tinc_graphs.enable = true;
 
   users.users.lass-stuff = {
-    uid = genid "lass-stuff";
+    uid = genid_uint31 "lass-stuff";
     description = "lassul.us blog cgi stuff";
     home = "/var/empty";
   };
@@ -124,7 +124,7 @@ in {
   };
 
   users.users.blog = {
-    uid = genid "blog";
+    uid = genid_uint31 "blog";
     description = "lassul.us blog deployment";
     home = "/srv/http/lassul.us";
     useDefaultShell = true;
diff --git a/lass/2configs/wiregrill.nix b/lass/2configs/wiregrill.nix
new file mode 100644
index 000000000..b2ee35df3
--- /dev/null
+++ b/lass/2configs/wiregrill.nix
@@ -0,0 +1,44 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }: let
+
+  self = config.krebs.build.host.nets.wiregrill;
+  isRouter = !isNull self.via;
+
+in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) {
+  #hack for modprobe inside containers
+  systemd.services."wireguard-wiregrill".path = mkIf config.boot.isContainer (mkBefore [
+    (pkgs.writeDashBin "modprobe" ":")
+  ]);
+
+  boot.kernel.sysctl = mkIf isRouter {
+    "net.ipv6.conf.all.forwarding" = 1;
+  };
+  krebs.iptables.tables.filter.INPUT.rules = [
+     { predicate = "-p udp --dport ${toString self.wireguard.port}"; target = "ACCEPT"; }
+  ];
+  krebs.iptables.tables.filter.FORWARD.rules = mkIf isRouter [
+    { precedence = 1000; predicate = "-i wiregrill -o wiregrill"; target = "ACCEPT"; }
+  ];
+
+  networking.wireguard.interfaces.wiregrill = {
+    ips =
+      (optional (!isNull self.ip4) self.ip4.addr) ++
+      (optional (!isNull self.ip6) self.ip6.addr);
+    listenPort = 51820;
+    privateKeyFile = (toString <secrets>) + "/wiregrill.key";
+    allowedIPsAsRoutes = true;
+    peers = mapAttrsToList
+      (_: host: {
+        allowedIPs = if isRouter then
+          (optional (!isNull host.nets.wiregrill.ip4) host.nets.wiregrill.ip4.addr) ++
+          (optional (!isNull host.nets.wiregrill.ip6) host.nets.wiregrill.ip6.addr)
+        else
+          host.nets.wiregrill.wireguard.subnets
+        ;
+        endpoint = mkIf (!isNull host.nets.wiregrill.via) (host.nets.wiregrill.via.ip4.addr + ":${toString host.nets.wiregrill.wireguard.port}");
+        persistentKeepalive = mkIf (!isNull host.nets.wiregrill.via) 61;
+        publicKey = host.nets.wiregrill.wireguard.pubkey;
+      })
+      (filterAttrs (_: h: hasAttr "wiregrill" h.nets) config.krebs.hosts);
+  };
+}
diff --git a/lass/3modules/xjail.nix b/lass/3modules/xjail.nix
index 974e11c6e..f6ce7ccc9 100644
--- a/lass/3modules/xjail.nix
+++ b/lass/3modules/xjail.nix
@@ -142,7 +142,7 @@ with import <stockholm/lib>;
 
     users.users = mapAttrs' (_: cfg:
       nameValuePair cfg.name {
-        uid = genid cfg.name;
+        uid = genid_uint31 cfg.name;
         home = "/home/${cfg.name}";
         useDefaultShell = true;
         createHome = true;
diff --git a/lass/5pkgs/custom/xmonad-lass/default.nix b/lass/5pkgs/custom/xmonad-lass/default.nix
index f86a4a69b..79e6416e1 100644
--- a/lass/5pkgs/custom/xmonad-lass/default.nix
+++ b/lass/5pkgs/custom/xmonad-lass/default.nix
@@ -78,7 +78,7 @@ main = getArgs >>= \case
 main' :: IO ()
 main' = do
     handleShutdownEvent <- newShutdownEventHandler
-    xmonad $ ewmh
+    launch $ ewmh
         $ withUrgencyHook LibNotifyUrgencyHook
         $ def
             { terminal           = myTerm
diff --git a/lass/5pkgs/l-gen-secrets/default.nix b/lass/5pkgs/l-gen-secrets/default.nix
index b6cb2ec7e..85b050644 100644
--- a/lass/5pkgs/l-gen-secrets/default.nix
+++ b/lass/5pkgs/l-gen-secrets/default.nix
@@ -8,6 +8,8 @@ pkgs.writeDashBin "l-gen-secrets" ''
   ${pkgs.openssh}/bin/ssh-keygen -t ed25519 -f $TMPDIR/ssh.id_ed25519 -P "" -C "" >/dev/null
   ${pkgs.openssl}/bin/openssl genrsa -out $TMPDIR/retiolum.rsa_key.priv 4096 2>/dev/null > /dev/null
   ${pkgs.openssl}/bin/openssl rsa -in $TMPDIR/retiolum.rsa_key.priv -pubout -out $TMPDIR/retiolum.rsa_key.pub 2>/dev/null > /dev/null
+  ${pkgs.wireguard}/bin/wg genkey > $TMPDIR/wiregrill.key
+  ${pkgs.coreutils}/bin/cat $TMPDIR/wiregrill.key | ${pkgs.wireguard}/bin/wg pubkey > $TMPDIR/wiregrill.pub
   cat <<EOF > $TMPDIR/hashedPasswords.nix
   {
     root = "$HASHED_PASSWORD";
@@ -35,6 +37,15 @@ pkgs.writeDashBin "l-gen-secrets" ''
   $(cat $TMPDIR/retiolum.rsa_key.pub)
           ${"''"};
         };
+        wiregrill = {
+          ip6.addr = (wip6 "changeme").address;
+          aliases = [
+            "$HOSTNAME.w"
+          ];
+          wireguard.pubkey = ${"''"}
+  $(cat $TMPDIR/wiregrill.pub)
+          ${"''"};
+        };
       };
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "$(cat $TMPDIR/ssh.id_ed25519.pub)";
diff --git a/lib/default.nix b/lib/default.nix
index 348d47e85..347830e8c 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -5,6 +5,7 @@ let
     evalSource = import ./eval-source.nix;
 
     git = import ./git.nix { inherit lib; };
+    krebs = import ./krebs lib;
     krops = import ../submodules/krops/lib;
     shell = import ./shell.nix { inherit lib; };
     types = nixpkgs-lib.types // import ./types.nix { inherit lib; };
@@ -28,8 +29,6 @@ let
       listToAttrs (map (name: nameValuePair name set.${name})
                        (filter (flip hasAttr set) names));
 
-    setAttr = name: value: set: set // { ${name} = value; };
-
     test = re: x: isString x && testString re x;
 
     testString = re: x: match re x != null;
@@ -94,7 +93,13 @@ let
           in
             if max.pos == 0
               then a
-              else "${concatStringsSep ":" lhs}::${concatStringsSep ":" rhs}";
+              else let
+                sep =
+                  if 8 - (length lhs + length rhs) == 1
+                    then ":0:"
+                    else "::";
+              in
+                "${concatStringsSep ":" lhs}${sep}${concatStringsSep ":" rhs}";
 
         drop-leading-zeros =
           let
@@ -108,7 +113,38 @@ let
           in
             a: concatStringsSep ":" (map f (splitString ":" a));
       in
-        a: toLower (group-zeros (drop-leading-zeros a));
+        a:
+          toLower
+            (if test ".*::.*" a
+              then a
+              else group-zeros (drop-leading-zeros a));
+
+    hashToLength = n: s: substring 0 n (hashString "sha256" s);
+
+    dropLast = n: xs: reverseList (drop n (reverseList xs));
+    takeLast = n: xs: reverseList (take n (reverseList xs));
+
+    # Split string into list of chunks where each chunk is at most n chars long.
+    # The leftmost chunk might shorter.
+    # Example: stringToGroupsOf "123456" -> ["12" "3456"]
+    stringToGroupsOf = n: s: let
+      acc =
+        foldl'
+          (acc: c: if stringLength acc.chunk < n then {
+            chunk = acc.chunk + c;
+            chunks = acc.chunks;
+          } else {
+            chunk = c;
+            chunks = acc.chunks ++ [acc.chunk];
+          })
+          {
+            chunk = "";
+            chunks = [];
+          }
+          (stringToCharacters s);
+    in
+      filter (x: x != []) ([acc.chunk] ++ acc.chunks);
+
   };
 in
 
diff --git a/lib/krebs/default.nix b/lib/krebs/default.nix
new file mode 100644
index 000000000..c9d9bef63
--- /dev/null
+++ b/lib/krebs/default.nix
@@ -0,0 +1,3 @@
+lib:
+with lib;
+mapNixDir (flip import lib) ./.
diff --git a/lib/krebs/genipv6.nix b/lib/krebs/genipv6.nix
new file mode 100644
index 000000000..22a23fcef
--- /dev/null
+++ b/lib/krebs/genipv6.nix
@@ -0,0 +1,109 @@
+lib:
+with lib;
+let {
+  body = netname: subnetname: suffixSpec: rec {
+    address = let
+      suffix' = prependZeros suffixLength suffix;
+    in
+      normalize-ip6-addr
+        (checkAddress addressLength (joinAddress subnetPrefix suffix'));
+    addressCIDR = "${address}/${toString addressLength}";
+    addressLength = 128;
+
+    inherit netname;
+    netCIDR = "${netAddress}/${toString netPrefixLength}";
+    netAddress =
+      normalize-ip6-addr (appendZeros addressLength netPrefix);
+    netHash = toString {
+      retiolum = 0;
+      wiregrill = 1;
+    }.${netname};
+    netPrefix = "42:${netHash}";
+    netPrefixLength = {
+      retiolum = 32;
+      wiregrill = 32;
+    }.${netname};
+
+    inherit subnetname;
+    subnetCIDR = "${subnetAddress}/${toString subnetPrefixLength}";
+    subnetAddress =
+      normalize-ip6-addr (appendZeros addressLength subnetPrefix);
+    subnetHash = hashToLength 4 subnetname;
+    subnetPrefix = joinAddress netPrefix subnetHash;
+    subnetPrefixLength = netPrefixLength + 16;
+
+    suffix = getAttr (typeOf suffixSpec) {
+      set =
+        concatStringsSep
+          ":"
+          (stringToGroupsOf
+            4
+            (hashToLength (suffixLength / 4) suffixSpec.hostName));
+      string = suffixSpec;
+    };
+    suffixLength = addressLength - subnetPrefixLength;
+  };
+
+  appendZeros = n: s: let
+    n' = n / 16;
+    zeroCount = n' - length parsedaddr;
+    parsedaddr = parseAddress s;
+  in
+    formatAddress (parsedaddr ++ map (const "0") (range 1 zeroCount));
+
+  prependZeros = n: s: let
+    n' = n / 16;
+    zeroCount = n' - length parsedaddr;
+    parsedaddr = parseAddress s;
+  in
+    formatAddress (map (const "0") (range 1 zeroCount) ++ parsedaddr);
+
+  hasEmptyPrefix = xs: take 2 xs == ["" ""];
+  hasEmptySuffix = xs: takeLast 2 xs == ["" ""];
+  hasEmptyInfix = xs: any (x: x == "") (trimEmpty 2 xs);
+
+  hasEmptyGroup = xs:
+    any (p: p xs) [hasEmptyPrefix hasEmptyInfix hasEmptySuffix];
+
+  ltrimEmpty = n: xs: if hasEmptyPrefix xs then drop n xs else xs;
+  rtrimEmpty = n: xs: if hasEmptySuffix xs then dropLast n xs else xs;
+  trimEmpty = n: xs: rtrimEmpty n (ltrimEmpty n xs);
+
+  parseAddress = splitString ":";
+  formatAddress = concatStringsSep ":";
+
+  check = s: c: if !c then throw "${s}" else true;
+
+  checkAddress = maxaddrlen: addr: let
+    parsedaddr = parseAddress addr;
+    normalizedaddr = trimEmpty 1 parsedaddr;
+  in
+    assert (check "address malformed; lone leading colon: ${addr}" (
+      head parsedaddr == "" -> tail (take 2 parsedaddr) == ""
+    ));
+    assert (check "address malformed; lone trailing colon ${addr}" (
+      last parsedaddr == "" -> head (takeLast 2 parsedaddr) == ""
+    ));
+    assert (check "address malformed; too many successive colons: ${addr}" (
+      length (filter (x: x == "") normalizedaddr) > 1 -> addr == [""]
+    ));
+    assert (check "address malformed: ${addr}" (
+      all (test "[0-9a-f]{0,4}") parsedaddr
+    ));
+    assert (check "address is too long: ${addr}" (
+      length normalizedaddr * 16 <= maxaddrlen
+    ));
+    addr;
+
+  joinAddress = prefix: suffix: let
+    parsedPrefix = parseAddress prefix;
+    parsedSuffix = parseAddress suffix;
+    normalizePrefix = rtrimEmpty 2 parsedPrefix;
+    normalizeSuffix = ltrimEmpty 2 parsedSuffix;
+    delimiter =
+      optional (length (normalizePrefix ++ normalizeSuffix) < 8 &&
+                (hasEmptySuffix parsedPrefix || hasEmptyPrefix parsedSuffix))
+               "";
+  in
+    formatAddress (normalizePrefix ++ delimiter ++ normalizeSuffix);
+}
diff --git a/lib/types.nix b/lib/types.nix
index 016853300..17c1688fa 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -19,7 +19,7 @@ rec {
         default = config._module.args.name;
       };
       cores = mkOption {
-        type = positive;
+        type = uint;
       };
       nets = mkOption {
         type = attrsOf net;
@@ -192,6 +192,28 @@ rec {
         }));
         default = null;
       };
+      wireguard = mkOption {
+        type = nullOr (submodule ({ config, ... }: {
+          options = {
+            port = mkOption {
+              type = int;
+              description = "tinc port to use to connect to host";
+              default = 51820;
+            };
+            pubkey = mkOption {
+              type = wireguard-pubkey;
+            };
+            subnets = mkOption {
+              type = listOf cidr;
+              description = ''
+                wireguard subnets,
+                this defines how routing behaves for hosts that can't reach each other.
+              '';
+              default = [];
+            };
+          };
+        }));
+      };
     };
   });
 
@@ -548,4 +570,6 @@ rec {
     check = filename.check;
     merge = mergeOneOption;
   };
+
+  wireguard-pubkey = str;
 }
diff --git a/makefu/0tests/data/secrets/netdata-stream.conf b/makefu/0tests/data/secrets/netdata-stream.conf
new file mode 100644
index 000000000..e69de29bb
diff --git a/makefu/0tests/data/secrets/nsupdate-cache.nix b/makefu/0tests/data/secrets/nsupdate-cache.nix
new file mode 100644
index 000000000..f5e704702
--- /dev/null
+++ b/makefu/0tests/data/secrets/nsupdate-cache.nix
@@ -0,0 +1 @@
+"derp"
diff --git a/makefu/1systems/full/source.nix b/makefu/1systems/full/source.nix
deleted file mode 100644
index 1e36c6e87..000000000
--- a/makefu/1systems/full/source.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  name="gum";
-  torrent = true;
-  clever_kexec = true;
-}
diff --git a/makefu/1systems/gum/config.nix b/makefu/1systems/gum/config.nix
index 3d2cbac6f..dcfa3d0e5 100644
--- a/makefu/1systems/gum/config.nix
+++ b/makefu/1systems/gum/config.nix
@@ -4,13 +4,14 @@ with import <stockholm/lib>;
 let
   external-ip = config.krebs.build.host.nets.internet.ip4.addr;
   ext-if = config.makefu.server.primary-itf;
+  allDisks = [ "/dev/sda" "/dev/sdb" ];
 in {
   imports = [
       <stockholm/makefu>
       ./hardware-config.nix
       {
         users.users.lass = {
-          uid = 9002;
+          uid = 19002;
           isNormalUser = true;
           createHome = true;
           useDefaultShell = true;
@@ -20,8 +21,12 @@ in {
           ];
         };
       }
+      # <stockholm/makefu/2configs/stats/client.nix>
+      <stockholm/makefu/2configs/stats/netdata-server.nix>
+
       <stockholm/makefu/2configs/headless.nix>
-      # <stockholm/makefu/2configs/smart-monitor.nix>
+      <stockholm/makefu/2configs/smart-monitor.nix>
+      { services.smartd.devices = builtins.map (x: { device = x; }) allDisks; }
 
       # Security
       <stockholm/makefu/2configs/sshd-totp.nix>
@@ -30,6 +35,8 @@ in {
       <stockholm/makefu/2configs/tools/core.nix>
       <stockholm/makefu/2configs/tools/dev.nix>
       <stockholm/makefu/2configs/tools/sec.nix>
+      <stockholm/makefu/2configs/tools/desktop.nix>
+
       <stockholm/makefu/2configs/zsh-user.nix>
       <stockholm/makefu/2configs/mosh.nix>
       # <stockholm/makefu/2configs/gui/xpra.nix>
@@ -41,17 +48,47 @@ in {
       <stockholm/makefu/2configs/iodined.nix>
       # <stockholm/makefu/2configs/backup.nix>
       <stockholm/makefu/2configs/tinc/retiolum.nix>
+      { # bonus retiolum config for connecting more hosts
+        krebs.tinc.retiolum = {
+          extraConfig = ''
+            ListenAddress = ${external-ip} 53
+            ListenAddress = ${external-ip} 655
+            ListenAddress = ${external-ip} 21031
+          '';
+          connectTo = [
+            "prism" "ni" "enklave" "eve" "archprism"
+          ];
+        };
+        networking.firewall = {
+          allowedTCPPorts =
+          [
+            53
+            655
+            21031
+          ];
+          allowedUDPPorts =
+          [
+            53
+            655
+            21031
+          ];
+        };
+      }
 
       # ci
       # <stockholm/makefu/2configs/exim-retiolum.nix>
       <stockholm/makefu/2configs/git/cgit-retiolum.nix>
+      <stockholm/makefu/2configs/shack/events-publisher>
       <stockholm/makefu/2configs/shack/gitlab-runner>
       <stockholm/makefu/2configs/remote-build/slave.nix>
       <stockholm/makefu/2configs/taskd.nix>
 
       # services
-      <stockholm/makefu/2configs/sabnzbd.nix>
+      # <stockholm/makefu/2configs/sabnzbd.nix>
       <stockholm/makefu/2configs/mail/mail.euer.nix>
+      {
+        krebs.exim.enable = mkForce false;
+      }
 
       # sharing
       <stockholm/makefu/2configs/share/gum.nix>
@@ -59,13 +96,6 @@ in {
       #<stockholm/makefu/2configs/retroshare.nix>
       ## <stockholm/makefu/2configs/ipfs.nix>
       #<stockholm/makefu/2configs/syncthing.nix>
-      { # ncdc
-        environment.systemPackages = [ pkgs.ncdc ];
-        networking.firewall = {
-          allowedUDPPorts = [ 51411 ];
-          allowedTCPPorts = [ 51411 ];
-        };
-      }
       # <stockholm/makefu/2configs/opentracker.nix>
 
       ## network
@@ -91,17 +121,17 @@ in {
       #<stockholm/makefu/2configs/nginx/public_html.nix>
       #<stockholm/makefu/2configs/nginx/update.connector.one.nix>
       <stockholm/makefu/2configs/nginx/misa-felix-hochzeit.ml.nix>
-      <stockholm/makefu/2configs/nginx/gold.krebsco.de.nix>
+      # <stockholm/makefu/2configs/nginx/gold.krebsco.de.nix>
       <stockholm/makefu/2configs/nginx/iso.euer.nix>
-      <stockholm/makefu/2configs/shack/events-publisher>
+      <stockholm/krebs/2configs/cache.nsupdate.info.nix>
 
       <stockholm/makefu/2configs/deployment/photostore.krebsco.de.nix>
       <stockholm/makefu/2configs/deployment/graphs.nix>
       <stockholm/makefu/2configs/deployment/owncloud.nix>
       <stockholm/makefu/2configs/deployment/boot-euer.nix>
-      <stockholm/makefu/2configs/deployment/bgt/hidden_service.nix>
+      <stockholm/makefu/2configs/bgt/download.binaergewitter.de.nix>
+      <stockholm/makefu/2configs/bgt/hidden_service.nix>
 
-      <stockholm/makefu/2configs/stats/client.nix>
       # <stockholm/makefu/2configs/logging/client.nix>
 
       # sharing
@@ -115,7 +145,8 @@ in {
 
       # krebs infrastructure services
       <stockholm/makefu/2configs/stats/server.nix>
-  ];
+    ];
+
   makefu.dl-dir = "/var/download";
 
   services.openssh.hostKeys = [
@@ -125,70 +156,14 @@ in {
   services.nginx.virtualHosts.cgit.serverAliases = [ "cgit.euer.krebsco.de" ];
   krebs.build.host = config.krebs.hosts.gum;
 
-  krebs.tinc.retiolum = {
-    extraConfig = ''
-      ListenAddress = ${external-ip} 53
-      ListenAddress = ${external-ip} 655
-      ListenAddress = ${external-ip} 21031
-    '';
-    connectTo = [
-      "prism" "ni" "enklave" "dishfire" "echelon" "hotdog"
-    ];
-  };
-
-
-  # access
-  users.users = {
-    root.openssh.authorizedKeys.keys = [ config.krebs.users.makefu-omo.pubkey ];
-    makefu.openssh.authorizedKeys.keys = [ config.krebs.users.makefu-vbob.pubkey config.krebs.users.makefu-bob.pubkey ];
-  };
-
-  # Chat
-  environment.systemPackages = with pkgs;[
-    weechat
-    bepasty-client-cli
-    tmux
-  ];
-
-  # Hardware
-
   # Network
   networking = {
     firewall = {
         allowPing = true;
         logRefusedConnections = false;
-        allowedTCPPorts = [
-          # smtp
-          25
-          # http
-          80 443
-          # httptunnel
-          8080 8443
-          # tinc
-          655
-          # tinc-shack
-          21032
-          # tinc-retiolum
-          21031
-          # taskserver
-          53589
-          # temp vnc
-          18001
-          # temp reverseshell
-          31337
-        ];
-        allowedUDPPorts = [
-          # tinc
-          655 53
-          # tinc-retiolum
-          21031
-          # tinc-shack
-          21032
-        ];
     };
     nameservers = [ "8.8.8.8" ];
   };
   users.users.makefu.extraGroups = [ "download" "nginx" ];
-  boot.tmpOnTmpfs = true;
   state = [ "/home/makefu/.weechat" ];
 }
diff --git a/makefu/1systems/gum/hardware-config.nix b/makefu/1systems/gum/hardware-config.nix
index bfe29b46c..e9670a5a4 100644
--- a/makefu/1systems/gum/hardware-config.nix
+++ b/makefu/1systems/gum/hardware-config.nix
@@ -46,7 +46,7 @@ in {
     "ata_piix" "vmw_pvscsi" "virtio_pci" "sd_mod" "ahci"
     "xhci_pci" "ehci_pci" "ahci" "sd_mod"
   ];
-  boot.kernelModules = [ "kvm-intel"  ];
+  boot.kernelModules = [ "dm-thin-pool" "kvm-intel"  ];
   hardware.enableRedistributableFirmware = true;
   fileSystems."/" = {
     device = "/dev/mapper/nixos-root";
@@ -56,10 +56,19 @@ in {
     device = "/dev/mapper/nixos-lib";
     fsType = "ext4";
   };
+  fileSystems."/var/log" = {
+    device = "/dev/mapper/nixos-log";
+    fsType = "ext4";
+  };
   fileSystems."/var/download" = {
     device = "/dev/mapper/nixos-download";
     fsType = "ext4";
   };
+  fileSystems."/var/www/binaergewitter" = {
+    device = "/dev/mapper/nixos-binaergewitter";
+    fsType = "ext4";
+    options = [ "nofail" ];
+  };
   fileSystems."/var/lib/borgbackup" = {
     device = "/dev/mapper/nixos-backup";
     fsType = "ext4";
diff --git a/makefu/1systems/gum/rescue.txt b/makefu/1systems/gum/rescue.txt
index 30276b7db..0a3ed96ee 100644
--- a/makefu/1systems/gum/rescue.txt
+++ b/makefu/1systems/gum/rescue.txt
@@ -1,10 +1,14 @@
+ssh gum.i -o StrictHostKeyChecking=no
+
 mount /dev/mapper/nixos-root /mnt
 mount /dev/sda2 /mnt/boot
 
 chroot-prepare /mnt
 chroot /mnt /bin/sh
 
+
 journalctl  -D /mnt/var/log/journal --since today # find the active system (or check grub)
+# ... activating ...
 
 export PATH=/nix/store/9incs5sfn7n1vh1lavgp95v761nh11w3-nixos-system-nextgum-18.03pre-git/sw/bin
 /nix/store/9incs5sfn7n1vh1lavgp95v761nh11w3-nixos-system-nextgum-18.03pre-git/activate
diff --git a/makefu/1systems/gum/source.nix b/makefu/1systems/gum/source.nix
index 6940498f1..1e36c6e87 100644
--- a/makefu/1systems/gum/source.nix
+++ b/makefu/1systems/gum/source.nix
@@ -1,5 +1,5 @@
 {
-  name="nextgum";
+  name="gum";
   torrent = true;
   clever_kexec = true;
 }
diff --git a/makefu/1systems/iso/config.nix b/makefu/1systems/iso/config.nix
index 34a75dbd3..fdf203d5b 100644
--- a/makefu/1systems/iso/config.nix
+++ b/makefu/1systems/iso/config.nix
@@ -10,7 +10,7 @@ with import <stockholm/lib>;
   ];
   # TODO: NIX_PATH and nix.nixPath are being set by default.nix right now
   # cd ~/stockholm ; nix-build -A config.system.build.isoImage -I nixos-config=makefu/1systems/iso.nix -I secrets=/home/makefu/secrets/iso /var/src/nixpkgs/nixos
-  krebs.build.host = config.krebs.hosts.iso;
+  krebs.build.host = { cores = 0; };
   isoImage.isoBaseName = lib.mkForce "stockholm";
   krebs.hidden-ssh.enable = true;
   environment.systemPackages = with pkgs; [
diff --git a/makefu/1systems/omo/config.nix b/makefu/1systems/omo/config.nix
index 260f96081..81b1e0ea1 100644
--- a/makefu/1systems/omo/config.nix
+++ b/makefu/1systems/omo/config.nix
@@ -44,7 +44,8 @@ in {
       # <stockholm/makefu/2configs/share/omo-timemachine.nix>
       <stockholm/makefu/2configs/tinc/retiolum.nix>
 
-
+      # statistics
+      <stockholm/makefu/2configs/stats/client.nix>
       # Logging
       #influx + grafana
       <stockholm/makefu/2configs/stats/server.nix>
@@ -74,7 +75,8 @@ in {
           "homeassistant-0.77.2"
         ];
       }
-      <stockholm/makefu/2configs/deployment/homeautomation>
+      <stockholm/makefu/2configs/homeautomation>
+      <stockholm/makefu/2configs/homeautomation/google-muell.nix>
       {
         makefu.ps3netsrv = {
           enable = true;
diff --git a/makefu/1systems/omo/hw/omo.nix b/makefu/1systems/omo/hw/omo.nix
index 1b618a486..31db335bb 100644
--- a/makefu/1systems/omo/hw/omo.nix
+++ b/makefu/1systems/omo/hw/omo.nix
@@ -48,9 +48,8 @@ in {
 
   makefu.snapraid = {
     enable = true;
-    # TODO: 3 is not protected
-    disks = map toMapper [ 0 1 ];
-    parity = toMapper 2;
+    disks = map toMapper [ 0 2 3 ];
+    parity = toMapper 1;
   };
   fileSystems = let
     cryptMount = name:
diff --git a/makefu/1systems/wbob/config.nix b/makefu/1systems/wbob/config.nix
index f2311fb55..3930406b1 100644
--- a/makefu/1systems/wbob/config.nix
+++ b/makefu/1systems/wbob/config.nix
@@ -20,9 +20,6 @@ in {
       <stockholm/makefu/2configs/mqtt.nix>
       <stockholm/makefu/2configs/gui/wbob-kiosk.nix>
 
-      <stockholm/makefu/2configs/stats/client.nix>
-
-
       # <stockholm/makefu/2configs/gui/studio-virtual.nix>
       # <stockholm/makefu/2configs/audio/jack-on-pulse.nix>
       # <stockholm/makefu/2configs/audio/realtime-audio.nix>
@@ -35,6 +32,8 @@ in {
       <stockholm/makefu/2configs/bluetooth-mpd.nix>
 
       # Sensors
+      <stockholm/makefu/2configs/stats/client.nix>
+      <stockholm/makefu/2configs/stats/collectd-client.nix>
       <stockholm/makefu/2configs/stats/telegraf>
       <stockholm/makefu/2configs/stats/telegraf/airsensor.nix>
       <stockholm/makefu/2configs/stats/telegraf/europastats.nix>
@@ -51,9 +50,9 @@ in {
           "homeassistant-0.77.2"
         ];
       }
-      <stockholm/makefu/2configs/deployment/bureautomation>
-      <stockholm/makefu/2configs/deployment/bureautomation/mpd.nix>
-      <stockholm/makefu/2configs/deployment/bureautomation/hass.nix>
+      <stockholm/makefu/2configs/bureautomation>
+      <stockholm/makefu/2configs/bureautomation/mpd.nix>
+      <stockholm/makefu/2configs/bureautomation/hass.nix>
       (let
           collectd-port = 25826;
           influx-port = 8086;
diff --git a/makefu/2configs/bgt/auphonic.pub b/makefu/2configs/bgt/auphonic.pub
new file mode 100644
index 000000000..37b8e0599
--- /dev/null
+++ b/makefu/2configs/bgt/auphonic.pub
@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDvP50lgtHhlC3LKzC1/4yzJNxkZFDSIBvEfavNfchNKJUEBPo82oVtfFgJR5XfjI7c2U9dHl+0q4qMl+9ZiZWr2YgDpAr78kpur4gjWKrnBa2eT9GIfXB3Tm1+OpI2HoeOHUKEK1gKqqe9tJfS+CLb7DLCjulW8zdLiiH6KmvyaH78hGjZv+bpx7H4rItAinl8vGe+ceRIk4tZbmkyhphXbQZa3Ov+imiJXIr7fmX3tkOhUp4YwrVlUK8J0MEa1Kf7ZYWRqvGnKYFQ73LwLPz7UIOZ93zPF4d0R7xqvdEEhIx+u1/gToQZSMUczbVqg3dixr3yeBhFA/6h0lTA61mx
diff --git a/makefu/2configs/nginx/download.binaergewitter.de.nix b/makefu/2configs/bgt/download.binaergewitter.de.nix
similarity index 51%
rename from makefu/2configs/nginx/download.binaergewitter.de.nix
rename to makefu/2configs/bgt/download.binaergewitter.de.nix
index 6b5687e72..6d64848f5 100644
--- a/makefu/2configs/nginx/download.binaergewitter.de.nix
+++ b/makefu/2configs/bgt/download.binaergewitter.de.nix
@@ -1,12 +1,25 @@
 { config, lib, pkgs, ... }:
 
+with import <stockholm/lib>;
 let
-  ident = (toString <secrets>) + "/mirrorsync.gum.id_ed25519";
+  ident = (builtins.readFile ./auphonic.pub);
 in {
-  systemd.services.mirrorsync = {
-    startAt = "08:00:00";
-    path = with pkgs; [ rsync openssh ];
-    script = ''rsync -av -e "ssh -i ${ident}" mirrorsync@159.69.132.234:/var/www/html/ /var/www/binaergewitter'';
+  services.openssh = {
+    allowSFTP = true;
+    sftpFlags = [ "-l VERBOSE" ];
+    extraConfig = ''
+      Match User auphonic
+        ForceCommand internal-sftp
+        AllowTcpForwarding no
+        X11Forwarding no
+        PasswordAuthentication no
+    '';
+  };
+  users.users.auphonic = {
+    uid = genid "auphonic";
+    group = "nginx";
+    useDefaultShell = true;
+    openssh.authorizedKeys.keys = [ ident config.krebs.users.makefu.pubkey ];
   };
   services.nginx = {
     enable = lib.mkDefault true;
diff --git a/makefu/2configs/deployment/bgt/hidden_service.nix b/makefu/2configs/bgt/hidden_service.nix
similarity index 100%
rename from makefu/2configs/deployment/bgt/hidden_service.nix
rename to makefu/2configs/bgt/hidden_service.nix
diff --git a/makefu/2configs/binary-cache/lass.nix b/makefu/2configs/binary-cache/lass.nix
index 46b386e14..51b4a1afc 100644
--- a/makefu/2configs/binary-cache/lass.nix
+++ b/makefu/2configs/binary-cache/lass.nix
@@ -3,7 +3,7 @@
 {
   nix = {
     binaryCaches = [
-      "http://cache.prism.r"
+      "https://cache.krebsco.de"
     ];
     binaryCachePublicKeys = [
       "cache.prism-1:+S+6Lo/n27XEtvdlQKuJIcb1yO5NUqUCE2lolmTgNJU="
diff --git a/makefu/2configs/bitlbee.nix b/makefu/2configs/bitlbee.nix
index 17efa7113..e955384d6 100644
--- a/makefu/2configs/bitlbee.nix
+++ b/makefu/2configs/bitlbee.nix
@@ -3,6 +3,6 @@
 {
    services.bitlbee = {
     enable = true;
-    libpurple_plugins = [ pkgs.telegram-purple ];
+    libpurple_plugins = [ pkgs.telegram-purple pkgs.pidgin-skypeweb];
   };
 }
diff --git a/makefu/2configs/deployment/bureautomation/default.nix b/makefu/2configs/bureautomation/default.nix
similarity index 100%
rename from makefu/2configs/deployment/bureautomation/default.nix
rename to makefu/2configs/bureautomation/default.nix
diff --git a/makefu/2configs/deployment/bureautomation/hass.nix b/makefu/2configs/bureautomation/hass.nix
similarity index 87%
rename from makefu/2configs/deployment/bureautomation/hass.nix
rename to makefu/2configs/bureautomation/hass.nix
index 443484a34..a89a4813f 100644
--- a/makefu/2configs/deployment/bureautomation/hass.nix
+++ b/makefu/2configs/bureautomation/hass.nix
@@ -112,7 +112,6 @@ in {
             "temperature" # "temperature_high" "temperature_low"
             "apparent_temperature"
             "hourly_summary" # next 24 hours text
-            "minutely_summary"
             "humidity"
             "pressure"
             "uv_index" ];
@@ -212,27 +211,44 @@ in {
             to = "on";
           };
           action = {
-            service= "homeassistant.turn_on";
-            entity_id= "switch.fernseher";
+            service = "homeassistant.turn_on";
+            entity_id =  [ "switch.fernseher" "switch.blitzdings" ];
           };
         }
         { alias = "Turn off Fernseher 10 minutes after last movement";
-          trigger = {
+          trigger = [ 
+          { # trigger when movement was detected at the time
             platform = "state";
             entity_id = "binary_sensor.motion";
             to = "off";
             for.minutes = 10;
-          };
+          }
+          { # trigger at 20:00 no matter what
+            # to avoid 'everybody left before 18:00:00'
+            platform = "time";
+            at = "18:00:00";
+          }
+        ];
           action = {
-            service= "homeassistant.turn_off";
-            entity_id= "switch.fernseher";
+            service = "homeassistant.turn_off";
+            entity_id =  [ "switch.fernseher" "switch.blitzdings" ];
+          };
+          condition =
+          { condition = "and";
+            conditions = [
+              {
+                condition = "time";
+                before = "06:30:00"; #only turn off between 6:30 and 18:00
+                after  = "18:00:00";
+                # weekday = [ "mon" "tue" "wed" "thu" "fri" ];
+              }
+              {
+                condition = "state";
+                entity_id = "binary_sensor.motion";
+                state = "off";
+              }
+            ];
           };
-          condition = [{
-            condition = "time";
-            before = "06:30:00"; #only turn off between 6:30 and 18:00
-            after  = "18:00:00";
-            weekday = [ "mon" "tue" "wed" "thu" "fri" ];
-          }];
         }
       ];
     };
diff --git a/makefu/2configs/deployment/bureautomation/mpd.nix b/makefu/2configs/bureautomation/mpd.nix
similarity index 100%
rename from makefu/2configs/deployment/bureautomation/mpd.nix
rename to makefu/2configs/bureautomation/mpd.nix
diff --git a/makefu/2configs/elchos/search.nix b/makefu/2configs/elchos/search.nix
index 521bfc80a..e7b91e6a8 100644
--- a/makefu/2configs/elchos/search.nix
+++ b/makefu/2configs/elchos/search.nix
@@ -32,7 +32,7 @@ let
       ${user}
 
       protocol=dyndns2
-      usev5=if, if=${primary-itf}
+      usev6=if, if=${primary-itf}
       ssl=yes
       server=ipv6.nsupdate.info
       login=${user}
diff --git a/makefu/2configs/deployment/homeautomation/default.nix b/makefu/2configs/homeautomation/default.nix
similarity index 99%
rename from makefu/2configs/deployment/homeautomation/default.nix
rename to makefu/2configs/homeautomation/default.nix
index 94799b11d..596d0002a 100644
--- a/makefu/2configs/deployment/homeautomation/default.nix
+++ b/makefu/2configs/homeautomation/default.nix
@@ -31,7 +31,7 @@ let
     brightness_scale = 100;
     # color
     rgb_state_topic = "/ham/${topic}/stat/Color";
-    rgb_command_topic = "/ham/${topic}/cmnd/Color2";
+    rgb_command_topic = "/ham/${topic}/cmnd/MEM1"; # use enabled tasmota rule
     rgb_command_mode = "hex";
     rgb_command_template = "{{ '%02x%02x%02x' | format(red, green, blue)}}";
     # effects
diff --git a/makefu/2configs/deployment/google-muell.nix b/makefu/2configs/homeautomation/google-muell.nix
similarity index 100%
rename from makefu/2configs/deployment/google-muell.nix
rename to makefu/2configs/homeautomation/google-muell.nix
diff --git a/makefu/2configs/deployment/homeautomation/mqtt.nix b/makefu/2configs/homeautomation/mqtt.nix
similarity index 100%
rename from makefu/2configs/deployment/homeautomation/mqtt.nix
rename to makefu/2configs/homeautomation/mqtt.nix
diff --git a/makefu/2configs/mail/mail.euer.nix b/makefu/2configs/mail/mail.euer.nix
index f079d7f41..f8f82e76b 100644
--- a/makefu/2configs/mail/mail.euer.nix
+++ b/makefu/2configs/mail/mail.euer.nix
@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 {
   imports = [
-    (builtins.fetchTarball "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.1.4/nixos-mailserver-v2.1.4.tar.gz")
+    (builtins.fetchTarball "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.2.0/nixos-mailserver-v2.2.0.tar.gz")
   ];
 
   mailserver = {
diff --git a/makefu/2configs/minimal.nix b/makefu/2configs/minimal.nix
index d764e5624..cb2ef09e3 100644
--- a/makefu/2configs/minimal.nix
+++ b/makefu/2configs/minimal.nix
@@ -7,8 +7,8 @@
   # the only true timezone (even after the the removal of DST)
   time.timeZone = "Europe/Berlin";
 
-  networking.hostName = config.krebs.build.host.name;
-  nix.buildCores = config.krebs.build.host.cores;
+  networking.hostName = lib.mkIf (lib.hasAttr "host" config.krebs.build) config.krebs.build.host.name;
+  nix.buildCores = 0; # until https://github.com/NixOS/nixpkgs/pull/50440 is in stable
 
   # we use gpg if necessary (or nothing at all)
   programs.ssh.startAgent = false;
@@ -85,4 +85,6 @@
     "net.ipv6.conf.all.use_tempaddr" = 2;
     "net.ipv6.conf.default.use_tempaddr" = 2;
   };
+
+  services.nscd.enable = false;
 }
diff --git a/makefu/2configs/nginx/gum.krebsco.de.nix b/makefu/2configs/nginx/gum.krebsco.de.nix
new file mode 100644
index 000000000..3e96e6826
--- /dev/null
+++ b/makefu/2configs/nginx/gum.krebsco.de.nix
@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+with import <stockholm/lib>;
+let
+in {
+  services.nginx = {
+    enable = mkDefault true;
+    virtualHosts."gum.krebsco.de" = {
+      forceSSL = true;
+      enableACME = true;
+      locations."/" =  {
+        # proxyPass = "http://localhost:8000/";
+        # extraConfig = ''
+        #   proxy_set_header   Host $host;
+        #   proxy_set_header   X-Real-IP          $remote_addr;
+        #   proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
+        # '';
+      };
+    };
+  };
+}
diff --git a/makefu/2configs/shack/events-publisher/default.nix b/makefu/2configs/shack/events-publisher/default.nix
index 531d2525e..964e5ccbb 100644
--- a/makefu/2configs/shack/events-publisher/default.nix
+++ b/makefu/2configs/shack/events-publisher/default.nix
@@ -2,8 +2,8 @@
 with import <stockholm/lib>;
 let
   shack-announce = pkgs.callPackage (builtins.fetchTarball {
-    url = "https://github.com/makefu/events-publisher/archive/670f4d7182a41b6763296e301612499d2986f213.tar.gz";
-    sha256 = "1yf9cb08v4rc6x992yx5lcyn62sm3p8i2b48rsmr4m66xdi4bpnd";
+    url = "https://github.com/makefu/events-publisher/archive/419afdfe16ebf7f2360d2ba64b67ca88948832bd.tar.gz";
+    sha256 = "0rn1ykgjbd79zg03maa49kzi6hpzn4xzf4j93qgx5wax7h12qjx0";
   }) {} ;
   home = "/var/lib/shackannounce";
   user = "shackannounce";
diff --git a/makefu/2configs/share/omo.nix b/makefu/2configs/share/omo.nix
index e4fef7c3c..ed5066787 100644
--- a/makefu/2configs/share/omo.nix
+++ b/makefu/2configs/share/omo.nix
@@ -30,6 +30,12 @@ in {
         browseable = "yes";
         "guest ok" = "yes";
       };
+      audiobook = {
+        path = "/media/crypt1/audiobooks";
+        "read only" = "yes";
+        browseable = "yes";
+        "guest ok" = "yes";
+      };
       crypt0 = {
         path = "/media/crypt0";
         "read only" = "yes";
diff --git a/makefu/2configs/share/wbob.nix b/makefu/2configs/share/wbob.nix
index 7d3fc38fe..9695751ff 100644
--- a/makefu/2configs/share/wbob.nix
+++ b/makefu/2configs/share/wbob.nix
@@ -8,6 +8,7 @@
     home = "/home/share";
     createHome = true;
   };
+  users.groups.mpd.members = [ "makefu" ];
   services.samba = {
     enable = true;
     enableNmbd = true;
@@ -24,6 +25,12 @@
         browseable = "yes";
         "guest ok" = "yes";
       };
+      music-rw = {
+        path = "/data/music";
+        "read only" = "no";
+        browseable = "yes";
+        "guest ok" = "no";
+      };
     };
     extraConfig = ''
       guest account = smbguest
diff --git a/makefu/2configs/stats/client.nix b/makefu/2configs/stats/client.nix
index cfb5e3fd2..b88515a35 100644
--- a/makefu/2configs/stats/client.nix
+++ b/makefu/2configs/stats/client.nix
@@ -1,61 +1,7 @@
-{pkgs, config, ...}:
 {
-  services.collectd = {
+  makefu.netdata = {
     enable = true;
-    autoLoadPlugin = true;
-    extraConfig = ''
-      Hostname ${config.krebs.build.host.name}
-      LoadPlugin load
-      LoadPlugin disk
-      LoadPlugin memory
-      LoadPlugin df
-      Interval 30.0
-
-      LoadPlugin interface
-      <Plugin "interface">
-        Interface "*Link"
-        Interface "lo"
-        Interface "vboxnet*"
-        Interface "virbr*"
-        IgnoreSelected true
-      </Plugin>
-
-      LoadPlugin df
-      <Plugin "df">
-        MountPoint "/nix/store"
-        # MountPoint "/run*"
-        # MountPoint "/sys*"
-        # MountPoint "/dev"
-        # MountPoint "/dev/shm"
-        # MountPoint "/tmp"
-        FSType "tmpfs"
-        FSType "binfmt_misc"
-        FSType "debugfs"
-        FSType "tracefs"
-        FSType "mqueue"
-        FSType "hugetlbfs"
-        FSType "systemd-1"
-        FSType "cgroup"
-        FSType "securityfs"
-        FSType "ramfs"
-        FSType "proc"
-        FSType "devpts"
-        FSType "devtmpfs"
-        MountPoint "/var/lib/docker/devicemapper"
-        IgnoreSelected true
-      </Plugin>
-
-      LoadPlugin cpu
-      <Plugin cpu>
-        ReportByCpu true
-        ReportByState true
-        ValuesPercentage true
-      </Plugin>
-
-      LoadPlugin network
-      <Plugin "network">
-          Server "${config.makefu.stats-server}" "25826"
-      </Plugin>
-    '';
+    stream.role = "slave";
+    # stream.destination = "netdata.makefu.r";
   };
 }
diff --git a/makefu/2configs/stats/collectd-client.nix b/makefu/2configs/stats/collectd-client.nix
new file mode 100644
index 000000000..cfb5e3fd2
--- /dev/null
+++ b/makefu/2configs/stats/collectd-client.nix
@@ -0,0 +1,61 @@
+{pkgs, config, ...}:
+{
+  services.collectd = {
+    enable = true;
+    autoLoadPlugin = true;
+    extraConfig = ''
+      Hostname ${config.krebs.build.host.name}
+      LoadPlugin load
+      LoadPlugin disk
+      LoadPlugin memory
+      LoadPlugin df
+      Interval 30.0
+
+      LoadPlugin interface
+      <Plugin "interface">
+        Interface "*Link"
+        Interface "lo"
+        Interface "vboxnet*"
+        Interface "virbr*"
+        IgnoreSelected true
+      </Plugin>
+
+      LoadPlugin df
+      <Plugin "df">
+        MountPoint "/nix/store"
+        # MountPoint "/run*"
+        # MountPoint "/sys*"
+        # MountPoint "/dev"
+        # MountPoint "/dev/shm"
+        # MountPoint "/tmp"
+        FSType "tmpfs"
+        FSType "binfmt_misc"
+        FSType "debugfs"
+        FSType "tracefs"
+        FSType "mqueue"
+        FSType "hugetlbfs"
+        FSType "systemd-1"
+        FSType "cgroup"
+        FSType "securityfs"
+        FSType "ramfs"
+        FSType "proc"
+        FSType "devpts"
+        FSType "devtmpfs"
+        MountPoint "/var/lib/docker/devicemapper"
+        IgnoreSelected true
+      </Plugin>
+
+      LoadPlugin cpu
+      <Plugin cpu>
+        ReportByCpu true
+        ReportByState true
+        ValuesPercentage true
+      </Plugin>
+
+      LoadPlugin network
+      <Plugin "network">
+          Server "${config.makefu.stats-server}" "25826"
+      </Plugin>
+    '';
+  };
+}
diff --git a/makefu/2configs/stats/netdata-server.nix b/makefu/2configs/stats/netdata-server.nix
new file mode 100644
index 000000000..5fec3583c
--- /dev/null
+++ b/makefu/2configs/stats/netdata-server.nix
@@ -0,0 +1,17 @@
+{
+  makefu.netdata = {
+    enable = true;
+    stream.role = "master";
+  };
+
+  services.nginx = {
+    virtualHosts."netdata.euer.krebsco.de" = {
+      addSSL = true;
+      enableACME = true;
+      locations."/".proxyPass = "http://localhost:19999";
+    };
+    virtualHosts."netdata.makefu.r" = {
+      locations."/".proxyPass = "http://localhost:19999";
+    };
+  };
+}
diff --git a/makefu/2configs/stats/server.nix b/makefu/2configs/stats/server.nix
index c8e768c99..bb8fd1750 100644
--- a/makefu/2configs/stats/server.nix
+++ b/makefu/2configs/stats/server.nix
@@ -21,6 +21,13 @@ in {
   services.influxdb.extraConfig = {
     meta.hostname = config.krebs.build.host.name;
     # meta.logging-enabled = true;
+    logging.level = "info";
+    http.log-enabled = true;
+    http.write-tracing = false;
+    http.suppress-write-log = true;
+    data.trace-logging-enabled = false;
+    data.query-log-enabled = false;
+
     http.bind-address = ":${toString influx-port}";
     admin.bind-address = ":8083";
     monitoring = {
diff --git a/makefu/2configs/tinc/retiolum.nix b/makefu/2configs/tinc/retiolum.nix
index 98abb2406..0d2774209 100644
--- a/makefu/2configs/tinc/retiolum.nix
+++ b/makefu/2configs/tinc/retiolum.nix
@@ -1,8 +1,10 @@
-{ pkgs, ... }:
+{ pkgs, config, ... }:
 {
   imports = [
     ../binary-cache/lass.nix
   ];
   krebs.tinc.retiolum.enable = true;
   environment.systemPackages = [ pkgs.tinc ];
+  networking.firewall.allowedTCPPorts = [ config.krebs.build.host.nets.retiolum.tinc.port ];
+  networking.firewall.allowedUDPPorts = [ config.krebs.build.host.nets.retiolum.tinc.port ];
 }
diff --git a/makefu/3modules/default.nix b/makefu/3modules/default.nix
index 7146174fb..65b5a6afd 100644
--- a/makefu/3modules/default.nix
+++ b/makefu/3modules/default.nix
@@ -5,6 +5,7 @@ _:
     ./awesome-extra.nix
     ./deluge.nix
     ./forward-journal.nix
+    ./netdata.nix
     ./opentracker.nix
     ./ps3netsrv.nix
     ./logging-config.nix
diff --git a/makefu/3modules/netdata.nix b/makefu/3modules/netdata.nix
new file mode 100644
index 000000000..3ed33643c
--- /dev/null
+++ b/makefu/3modules/netdata.nix
@@ -0,0 +1,150 @@
+{ config, lib, pkgs, ... }:
+
+# fork of https://github.com/Mic92/dotfiles/blob/master/nixos/vms/modules/netdata.nix
+with lib;
+let
+  cfg = config.makefu.netdata;
+in
+{
+  options.makefu.netdata = {
+    enable = mkEnableOption "netdata";
+
+    # TODO only apikey from file, set remote host manually
+    stream.file = mkOption {
+      type = types.str;
+      default = toString <secrets/netdata-stream.conf>;
+      description = "path to stream data file";
+    };
+    stream.role = mkOption {
+      type = types.enum [ "master" "slave" ];
+      default = "slave";
+      description = "Wether to stream data";
+    };
+
+    httpcheck.checks = mkOption {
+      type = types.attrsOf (types.submodule ({
+        options = {
+          url = mkOption {
+            type = types.str;
+            example = "https://thalheim.io";
+            description = "Url to check";
+          };
+          regex = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+            example = "My homepage";
+            description = "Regex that is matched against the returned content";
+          };
+          statusAccepted = mkOption {
+            type = types.listOf types.int;
+            default = [ 200 ];
+            example = [ 401 ];
+            description = "Expected http status code";
+          };
+        };
+      }));
+      default = {};
+      description = ''
+        httpcheck plugin: https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/httpcheck/httpcheck.conf
+      '';
+    };
+
+    portcheck.checks = mkOption {
+      type = types.attrsOf (types.submodule ({
+        options = {
+          host = mkOption {
+            type = types.str;
+            default = "127.0.0.1";
+            description = "Dns name/IP to check";
+          };
+          port = mkOption {
+            type = types.int;
+            description = "Tcp port number";
+          };
+        };
+      }));
+      default = {};
+      description = ''
+        portcheck plugin: https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/portcheck
+      '';
+    };
+  };
+  config = mkIf cfg.enable {
+    systemd.services.netdata = {
+      requires = [ "secret.service" ];
+      after = [ "secret.service" ];
+    };
+    krebs.secret.files.netdata-stream = {
+      path = "/run/secret/netdata-stream.conf";
+      owner.name = "netdata";
+      source-path = cfg.stream.file;
+    };
+    environment.etc."netdata/stream.conf".source = "/run/secret/netdata-stream.conf";
+
+    services.netdata = {
+      enable = true;
+      config = {
+        global = {
+          "bind to" = "0.0.0.0:19999 [::]:19999";
+          "error log" = "stderr";
+          "update every" = "5";
+        };
+        health.enable = if cfg.stream.role == "master" then "yes" else "no";
+      };
+    };
+  services.netdata.python.extraPackages = ps: [
+    ps.psycopg2 ps.docker ps.dnspython
+  ];
+
+    makefu.netdata.portcheck.checks.openssh.port = (lib.head config.services.openssh.ports);
+
+    networking.firewall.allowedTCPPorts = [ 19999 ];
+
+    environment.etc."netdata/python.d/httpcheck.conf".text = ''
+    update_every: 30
+    ${lib.concatStringsSep "\n" (mapAttrsToList (site: options:
+    ''
+      ${site}:
+        url: '${options.url}'
+        ${optionalString (options.regex != null) "regex: '${options.regex}'"}
+        status_accepted: [ ${lib.concatStringsSep " " (map toString options.statusAccepted) } ]
+      '') cfg.httpcheck.checks)
+      }
+    '';
+
+    environment.etc."netdata/python.d/portcheck.conf".text = ''
+    ${lib.concatStringsSep "\n" (mapAttrsToList (service: options:
+    ''
+      ${service}:
+        host: '${options.host}'
+        port: ${toString options.port}
+      '') cfg.portcheck.checks)
+      }
+    '';
+    systemd.services.netdata.restartTriggers = [
+      config.environment.etc."netdata/python.d/httpcheck.conf".source
+      config.environment.etc."netdata/python.d/portcheck.conf".source
+      config.environment.etc."netdata/stream.conf".source
+    ];
+
+    environment.etc."netdata/health.d/httpcheck.conf".text = ''
+      # taken from the original but warn only if a request is at least 300ms slow
+      template: web_service_slow
+      families: *
+      on: httpcheck.responsetime
+      lookup: average -3m unaligned of time
+      units: ms
+      every: 10s
+      warn: ($this > ($1h_web_service_response_time * 4) && $this > 1000)
+      crit: ($this > ($1h_web_service_response_time * 6) && $this > 1000)
+      info: average response time over the last 3 minutes, compared to the average over the last hour
+      delay: down 5m multiplier 1.5 max 1h
+      options: no-clear-notification
+      to: webmaster
+    '';
+
+  };
+  # TODO: notification
+  # environment.etc."netdata/health_alarm_notify.conf".source = "/run/keys/netdata-pushover.conf";
+
+}
diff --git a/makefu/5pkgs/libopencm3/default.nix b/makefu/5pkgs/libopencm3/default.nix
deleted file mode 100644
index ed35fc639..000000000
--- a/makefu/5pkgs/libopencm3/default.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{ lib, stdenv, fetchFromGitHub, gcc-arm-embedded, python }:
-stdenv.mkDerivation rec {
-  name = "libopencm-${version}";
-  version = "2017-04-01";
-
-  src = fetchFromGitHub {
-    owner = "libopencm3";
-    repo = "libopencm3";
-    rev = "383fafc862c0d47f30965f00409d03a328049278";
-    sha256 = "0ar67icxl39cf7yb5glx3zd5413vcs7zp1jq0gzv1napvmrv3jv9";
-  };
-
-  buildInputs = [ gcc-arm-embedded python ];
-  buildPhase = ''
-    sed -i 's#/usr/bin/env python#${python}/bin/python#' ./scripts/irq2nvic_h
-    make
-  '';
-  installPhase = ''
-    mkdir -p $out
-    cp -r lib $out/
-  '';
-
-  meta = {
-    description = "Open Source ARM cortex m microcontroller library";
-    homepage = https://github.com/libopencm3/libopencm3;
-    license = stdenv.lib.licenses.gpl2;
-    platforms = stdenv.lib.platforms.linux;
-    maintainers = with stdenv.lib.maintainers; [ makefu ];
-  };
-}
diff --git a/makefu/krops.nix b/makefu/krops.nix
index 6c510eba3..2a2f70a05 100644
--- a/makefu/krops.nix
+++ b/makefu/krops.nix
@@ -7,7 +7,6 @@
 
   host-src = {
     secure = false;
-    full = false;
     torrent = false;
     hw = false;
     musnix = false;
@@ -23,7 +22,11 @@
     {
       # nixos-18.09 @ 2018-09-18
       # + uhub/sqlite: 5dd7610401747
-      nixpkgs = if test then {
+      # + hovercraft: 7134801b17d72
+      nixpkgs = if host-src.arm6 then {
+        # TODO: we want to track the unstable channel
+        symlink = "/nix/var/nix/profiles/per-user/root/channels/nixos/";
+      } else {
         file = {
           path = toString (pkgs.fetchFromGitHub {
             owner = "makefu";
@@ -33,14 +36,6 @@
           });
           useChecksum = true;
         };
-      } else if host-src.full then {
-        git.ref = nixpkgs-src.rev;
-        git.url = nixpkgs-src.url;
-      } else if host-src.arm6 then {
-        # TODO: we want to track the unstable channel
-        symlink = "/nix/var/nix/profiles/per-user/root/channels/nixos/";
-      } else {
-        file = "/home/makefu/store/${nixpkgs-src.rev}";
       };
       nixos-config.symlink = "stockholm/makefu/1systems/${name}/config.nix";
 
diff --git a/makefu/update-channel.sh b/makefu/update-channel.sh
index 59d3c434f..0899581ec 100755
--- a/makefu/update-channel.sh
+++ b/makefu/update-channel.sh
@@ -6,4 +6,4 @@ nix-shell -p nix-prefetch-git --run 'nix-prefetch-git \
   --rev refs/heads/master' \
 > $dir/nixpkgs.json
 newref=$(cat $dir/nixpkgs.json | jq -r .rev | sed 's/\(.\{7\}\).*/\1/')
-echo git commit $dir/nixpkgs.json -m "nixpkgs: $oldref -> $newref"
+echo "git commit $dir/nixpkgs.json -m 'ma nixpkgs: $oldref -> $newref'"
diff --git a/submodules/krops b/submodules/krops
index eb68146cc..61b5ef3b8 160000
--- a/submodules/krops
+++ b/submodules/krops
@@ -1 +1 @@
-Subproject commit eb68146cc4848cfc0c0339c72a44a96fdeb4a1de
+Subproject commit 61b5ef3b8e7e4d601db67a20f14a5022e9de8398
diff --git a/tv/2configs/xserver/default.nix b/tv/2configs/xserver/default.nix
index 8d4b13fad..f68e8e681 100644
--- a/tv/2configs/xserver/default.nix
+++ b/tv/2configs/xserver/default.nix
@@ -48,31 +48,35 @@ in {
 
   systemd.services.xmonad = let
     xmonad = "${pkgs.haskellPackages.xmonad-tv}/bin/xmonad";
+    xmonad-prepare = pkgs.writeDash "xmonad-prepare" ''
+      ${pkgs.coreutils}/bin/mkdir -p "$XMONAD_CACHE_DIR"
+      ${pkgs.coreutils}/bin/mkdir -p "$XMONAD_CONFIG_DIR"
+      ${pkgs.coreutils}/bin/mkdir -p "$XMONAD_DATA_DIR"
+    '';
+    xmonad-ready = pkgs.writeDash "xmonad-ready" ''
+      {
+        ${pkgs.xorg.xhost}/bin/xhost +SI:localuser:${cfg.user.name}
+        ${pkgs.xorg.xhost}/bin/xhost -LOCAL:
+      } &
+      ${pkgs.xorg.xmodmap}/bin/xmodmap ${import ./Xmodmap.nix args} &
+      ${pkgs.xorg.xrdb}/bin/xrdb ${import ./Xresources.nix args} &
+      ${pkgs.xorg.xsetroot}/bin/xsetroot -solid '#1c1c1c' &
+      wait
+    '';
   in {
     wantedBy = [ "graphical.target" ];
     requires = [ "xserver.service" ];
     environment = {
       DISPLAY = ":${toString config.services.xserver.display}";
-
       FZMENU_FZF_DEFAULT_OPTS = toString [
         "--color=dark,border:126,bg+:090"
         "--inline-info"
       ];
-
       XMONAD_CACHE_DIR = cfg.cacheDir;
       XMONAD_CONFIG_DIR = cfg.configDir;
       XMONAD_DATA_DIR = cfg.dataDir;
-
-      XMONAD_STARTUP_HOOK = pkgs.writeDash "xmonad-startup-hook" ''
-        ${pkgs.xorg.xhost}/bin/xhost +LOCAL: &
-        ${pkgs.xorg.xmodmap}/bin/xmodmap ${import ./Xmodmap.nix args} &
-        ${pkgs.xorg.xrdb}/bin/xrdb ${import ./Xresources.nix args} &
-        ${pkgs.xorg.xsetroot}/bin/xsetroot -solid '#1c1c1c' &
-        wait
-      '';
-
-      # XXX JSON is close enough :)
-      XMONAD_WORKSPACES0_FILE = pkgs.writeText "xmonad.workspaces0" (toJSON [
+      XMONAD_STARTUP_HOOK = xmonad-ready;
+      XMONAD_WORKSPACES0_FILE = pkgs.writeJSON "xmonad-workspaces0.json" [
         "Dashboard" # we start here
         "23"
         "cr"
@@ -82,7 +86,7 @@ in {
         "mail"
         "stockholm"
         "za" "zh" "zj" "zs"
-      ]);
+      ];
     };
     path = [
       config.tv.slock.package
@@ -93,14 +97,10 @@ in {
       "/run/wrappers" # for su
     ];
     serviceConfig = {
-      SyslogIdentifier = "xmonad";
-      ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p ${toString [
-        "\${XMONAD_CACHE_DIR}"
-        "\${XMONAD_CONFIG_DIR}"
-        "\${XMONAD_DATA_DIR}"
-      ]}";
-      ExecStart = "@${xmonad} xmonad-${currentSystem} ";
+      ExecStartPre = "@${xmonad-prepare} xmonad-prepare";
+      ExecStart = "@${xmonad} xmonad-${currentSystem}";
       ExecStop = "@${xmonad} xmonad-${currentSystem} --shutdown";
+      SyslogIdentifier = "xmonad";
       User = cfg.user.name;
       WorkingDirectory = cfg.user.home;
     };
diff --git a/tv/5pkgs/haskell/xmonad-tv/shell.nix b/tv/5pkgs/haskell/xmonad-tv/shell.nix
index 936e69627..6ca00bc05 100644
--- a/tv/5pkgs/haskell/xmonad-tv/shell.nix
+++ b/tv/5pkgs/haskell/xmonad-tv/shell.nix
@@ -46,7 +46,7 @@ in
       xmonad_restart() {(
         set -efu
         cd "$WORKDIR"
-        if systemctl is-active xmonad; then
+        if systemctl --quiet is-active xmonad; then
           sudo systemctl stop xmonad
           cp -b "$config_XMONAD_CACHE_DIR"/xmonad.state "$CACHEDIR"/
           echo "xmonad.state: $(cat "$CACHEDIR"/xmonad.state)"
@@ -59,9 +59,14 @@ in
 
       xmonad_yield() {(
         set -efu
-        "$xmonad" --shutdown
-        cp -b "$CACHEDIR"/xmonad.state "$config_XMONAD_CACHE_DIR"/
-        sudo systemctl start xmonad
+        if ! systemctl --quiet is-active xmonad; then
+          "$xmonad" --shutdown
+          cp -b "$CACHEDIR"/xmonad.state "$config_XMONAD_CACHE_DIR"/
+          sudo systemctl start xmonad
+        else
+          echo "xmonad.service is already running" >&2
+          exit -1
+        fi
       )}
 
       export PATH=${config.systemd.services.xmonad.path}:$PATH