Merge remote-tracking branch 'gum/master'

21 files changed, 708 insertions, 299 deletions

diff --git a/Makefile b/Makefile
index aefd17147..5b898c54c 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ ifeq ($(filter),json)
 else
 	filter() { cat; }
 endif
-	nix-instantiate \
+	result=$$(nix-instantiate \
 		$${extraArgs-} \
 		--eval \
 		-A "$$get" \
@@ -45,8 +45,9 @@ endif
 		--argstr current-host-name "$$HOSTNAME" \
 		--argstr current-user-name "$$LOGNAME" \
 		$${system+--argstr system "$$system"} \
-		$${target+--argstr target "$$target"} \
-		| filter
+		$${target+--argstr target "$$target"})
+	echo "$$result" | filter
+
 else
 $(error unbound variable: system[s])
 endif
diff --git a/krebs/3modules/buildbot/master.nix b/krebs/3modules/buildbot/master.nix
new file mode 100644
index 000000000..7078000fe
--- /dev/null
+++ b/krebs/3modules/buildbot/master.nix
@@ -0,0 +1,375 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+let
+  buildbot = pkgs.buildbot;
+  buildbot-master-config = pkgs.writeText "buildbot-master.cfg" ''
+    # -*- python -*-
+    from buildbot.plugins import *
+    import re
+    import json
+    c = BuildmasterConfig = {}
+
+    c['slaves'] = []
+    slaves = json.loads('${builtins.toJSON cfg.slaves}')
+    slavenames = [ s for s in slaves ]
+    for k,v in slaves.items():
+      c['slaves'].append(buildslave.BuildSlave(k, v))
+
+    # TODO: configure protocols?
+    c['protocols'] = {'pb': {'port': 9989}}
+
+    ####### Build Inputs
+    c['change_source'] = cs = []
+
+    ${ concatStringsSep "\n"
+    (mapAttrsToList (n: v: ''
+        #### Change_Source: Begin of ${n}
+        ${v}
+        #### Change_Source: End of ${n}
+      '') cfg.change_source )}
+
+    ####### Build Scheduler
+    c['schedulers'] = sched = []
+
+    ${ concatStringsSep "\n"
+    (mapAttrsToList (n: v: ''
+        #### Schedulers: Begin of ${n}
+        ${v}
+        #### Schedulers: End of ${n}
+      '') cfg.scheduler )}
+
+    ###### Builder
+    c['builders'] = bu = []
+    
+    # Builder Pre: Begin
+    ${cfg.builder_pre}
+    # Builder Pre: End
+
+    ${ concatStringsSep "\n"
+    (mapAttrsToList (n: v: ''
+        #### Builder: Begin of ${n}
+        ${v}
+        #### Builder: End of ${n}
+      '') cfg.builder )}
+
+
+    ####### Status
+    c['status'] = st = []
+
+    # If you want to configure this url, override with extraConfig
+    c['buildbotURL'] = "http://${config.networking.hostName}:${toString cfg.web.port}/"
+
+    ${optionalString (cfg.web.enable) ''
+      from buildbot.status import html
+      from buildbot.status.web import authz, auth
+      authz_cfg=authz.Authz(
+          auth=auth.BasicAuth([ ("${cfg.web.username}","${cfg.web.password}") ]),
+          # TODO: configure harder
+          gracefulShutdown = False,
+          forceBuild = 'auth',
+          forceAllBuilds = 'auth',
+          pingBuilder = False,
+          stopBuild = 'auth',
+          stopAllBuilds = 'auth',
+          cancelPendingBuild = 'auth'
+      )
+      # TODO: configure krebs.nginx
+      st.append(html.WebStatus(http_port=${toString cfg.web.port}, authz=authz_cfg))
+      ''}
+
+    ${optionalString (cfg.irc.enable) ''
+      from buildbot.status import words
+      irc = words.IRC("${cfg.irc.server}", "${cfg.irc.nick}",
+                      channels=${builtins.toJSON cfg.irc.channels},
+                      notify_events={
+                        'success': 1,
+                        'failure': 1,
+                        'exception': 1,
+                        'successToFailure': 1,
+                        'failureToSuccess': 1,
+                      }${optionalString cfg.irc.allowForce ",allowForce=True"})
+      c['status'].append(irc)
+      ''}
+
+    ${ concatStringsSep "\n"
+    (mapAttrsToList (n: v: ''
+        #### Status: Begin of ${n}
+        ${v}
+        #### Status: End of ${n}
+      '') cfg.status )}
+
+    ####### PROJECT IDENTITY
+    c['title'] = "${cfg.title}"
+    c['titleURL'] = "http://krebsco.de"
+
+
+    ####### DB URL
+    # TODO: configure
+    c['db'] = {
+        'db_url' : "sqlite:///state.sqlite",
+    }
+    ${cfg.extraConfig}
+    '';
+
+  cfg = config.krebs.buildbot.master;
+
+  api = {
+    enable = mkEnableOption "Buildbot Master";
+    title = mkOption {
+      default = "Buildbot CI";
+      type = types.str;
+      description = ''
+        Title of the Buildbot Installation
+      '';
+    };
+    workDir = mkOption {
+      default = "/var/lib/buildbot/master";
+      type = types.str;
+      description = ''
+        Path to build bot master directory.
+        Will be created on startup.
+      '';
+    };
+
+    slaves = mkOption {
+      default = {};
+      type = types.attrsOf types.str;
+      description = ''
+        Attrset of slavenames with their passwords
+        slavename = slavepassword
+      '';
+    };
+
+    change_source = mkOption {
+      default = {};
+      type = types.attrsOf types.str;
+      example = {
+        stockholm = ''
+          cs.append(changes.GitPoller(
+                  'http://cgit.gum/stockholm',
+                  workdir='stockholm-poller', branch='master',
+                  project='stockholm',
+                  pollinterval=120))
+        '';
+      };
+      description = ''
+        Attrset of all the change_sources which should be configured.
+        It will be directly included into the master configuration.
+
+        At the end an change object should be appended to <literal>cs</literal>
+      '';
+    };
+
+    scheduler = mkOption {
+      default = {};
+      type = types.attrsOf types.str;
+      example = {
+        force-scheduler = ''
+          sched.append(schedulers.ForceScheduler(
+                                      name="force",
+                                      builderNames=["full-tests"]))
+        '';
+      };
+      description = ''
+        Attrset of all the schedulers which should be configured.
+        It will be directly included into the master configuration.
+
+        At the end an change object should be appended to <literal>sched</literal>
+      '';
+    };
+
+    builder_pre = mkOption {
+      default = "";
+      type = types.lines;
+      example = ''
+        grab_repo = steps.Git(repourl=stockholm_repo, mode='incremental')
+      '';
+      description = ''
+        some code before the builders are being assembled.
+        can be used to define functions used by multiple builders
+      '';
+    };
+
+    builder = mkOption {
+      default = {};
+      type = types.attrsOf types.str;
+      example = {
+        fast-test = ''
+        '';
+      };
+      description = ''
+        Attrset of all the builder which should be configured.
+        It will be directly included into the master configuration.
+
+        At the end an change object should be appended to <literal>bu</literal>
+      '';
+    };
+
+    status = mkOption {
+      default = {};
+      type = types.attrsOf types.str;
+      description = ''
+        Attrset of all the extra status which should be configured.
+        It will be directly included into the master configuration.
+
+        At the end an change object should be appended to <literal>st</literal>
+
+        Right now IRC and Web status can be configured by setting
+        <literal>buildbot.master.irc.enable</literal> and
+        <literal>buildbot.master.web.enable</literal>
+      '';
+    };
+
+    # Configurable Stati
+    web = mkOption {
+      default = {};
+      type = types.submodule ({ config2, ... }: {
+        options = {
+          enable = mkEnableOption "Buildbot Master Web Status";
+          username = mkOption {
+            default = "krebs";
+            type = types.str;
+            description = ''
+              username for web authentication
+            '';
+          };
+          hostname = mkOption {
+            default = config.networking.hostName;
+            type = types.str;
+            description = ''
+              web interface Hostname
+            '';
+          };
+          password = mkOption {
+            default = "bob";
+            type = types.str;
+            description = ''
+              password for web authentication
+            '';
+          };
+          port = mkOption {
+            default = 8010;
+            type = types.int;
+            description = ''
+              port for buildbot web status
+            '';
+          };
+        };
+      });
+    };
+
+    irc = mkOption {
+      default = {};
+      type = types.submodule ({ config, ... }: {
+        options = {
+          enable = mkEnableOption "Buildbot Master IRC Status";
+          channels = mkOption {
+            default = [ "nix-buildbot-meetup" ];
+            type = with types; listOf str;
+            description = ''
+              irc channels the bot should connect to
+            '';
+          };
+          allowForce = mkOption {
+            default = false;
+            type = types.bool;
+            description = ''
+              Determines if builds can be forced via IRC
+            '';
+          };
+          nick = mkOption {
+            default = "nix-buildbot";
+            type = types.str;
+            description = ''
+              nickname for IRC
+            '';
+          };
+          server = mkOption {
+            default = "irc.freenode.net";
+            type = types.str;
+            description = ''
+              Buildbot Status IRC Server to connect to
+            '';
+          };
+        };
+      });
+    };
+
+    extraConfig = mkOption {
+      default = "";
+      type = types.lines;
+      description = ''
+        extra config appended to the generated master.cfg
+      '';
+    };
+  };
+
+  imp = {
+
+    users.extraUsers.buildbotMaster = {
+      uid = 672626386; #genid buildbotMaster
+      description = "Buildbot Master";
+      home = cfg.workDir;
+      createHome = false;
+    };
+
+    users.extraGroups.buildbotMaster = {
+      gid = 672626386;
+    };
+
+    systemd.services.buildbotMaster = {
+      description = "Buildbot Master";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      # TODO: add extra dependencies to master like svn and cvs
+      path = [ pkgs.git ];
+      environment = {
+        SSL_CERT_FILE = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
+      };
+      serviceConfig = let
+        workdir="${lib.shell.escape cfg.workDir}";
+        secretsdir="${lib.shell.escape (toString <secrets>)}";
+      in {
+        PermissionsStartOnly = true;
+        Type = "forking";
+        PIDFile = "${workdir}/twistd.pid";
+        # TODO: maybe also prepare buildbot.tac?
+        ExecStartPre = pkgs.writeScript "buildbot-master-init" ''
+          #!/bin/sh
+          set -efux
+          if [ ! -e ${workdir} ];then
+            mkdir -p ${workdir}
+            ${buildbot}/bin/buildbot create-master -r -l 10 -f ${workdir}
+          fi
+          # always override the master.cfg
+          cp ${buildbot-master-config} ${workdir}/master.cfg
+          # copy secrets
+          cp ${secretsdir}/cac.json ${workdir}
+          cp ${secretsdir}/retiolum-ci.rsa_key.priv \
+             ${workdir}/retiolum.rsa_key.priv
+          # sanity
+          ${buildbot}/bin/buildbot checkconfig ${workdir}
+
+          # TODO: maybe upgrade? not sure about this
+          #       normally we should write buildbot.tac by our own
+          # ${buildbot}/bin/buildbot upgrade-master ${workdir}
+
+          chmod 700 -R ${workdir}
+          chown buildbotMaster:buildbotMaster -R ${workdir}
+        '';
+        ExecStart = "${buildbot}/bin/buildbot start ${workdir}";
+        ExecStop = "${buildbot}/bin/buildbot stop ${workdir}";
+        ExecReload = "${buildbot}/bin/buildbot reconfig ${workdir}";
+        PrivateTmp = "true";
+        User = "buildbotMaster";
+        Restart = "always";
+        RestartSec = "10";
+      };
+    };
+  };
+in
+{
+  options.krebs.buildbot.master = api;
+  config = mkIf cfg.enable imp;
+}
diff --git a/makefu/3modules/buildbot/slave.nix b/krebs/3modules/buildbot/slave.nix
index 69d0361bf..8711a287a 100644
--- a/makefu/3modules/buildbot/slave.nix
+++ b/krebs/3modules/buildbot/slave.nix
@@ -39,7 +39,7 @@ let
     s.setServiceParent(application)
     '';
   default-packages = [ pkgs.git pkgs.bash ];
-  cfg = config.makefu.buildbot.slave;
+  cfg = config.krebs.buildbot.slave;
 
   api = {
     enable = mkEnableOption "Buildbot Slave";
@@ -144,6 +144,7 @@ let
       path = default-packages ++ cfg.packages;
 
       environment = {
+          SSL_CERT_FILE = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
           NIX_REMOTE="daemon";
       } // cfg.extraEnviron;
 
@@ -180,6 +181,6 @@ let
   };
 in
 {
-  options.makefu.buildbot.slave = api;
+  options.krebs.buildbot.slave = api;
   config = mkIf cfg.enable imp;
 }
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index 740ba67b8..cbc1291fa 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -9,6 +9,8 @@ let
       ./apt-cacher-ng.nix
       ./bepasty-server.nix
       ./build.nix
+      ./buildbot/master.nix
+      ./buildbot/slave.nix
       ./current.nix
       ./exim-retiolum.nix
       ./exim-smarthost.nix
diff --git a/krebs/5pkgs/cac/default.nix b/krebs/5pkgs/cac/default.nix
index 40dd56412..4d39ce2fb 100644
--- a/krebs/5pkgs/cac/default.nix
+++ b/krebs/5pkgs/cac/default.nix
@@ -1,12 +1,12 @@
-{ stdenv, fetchgit, coreutils, curl, gnused, inotifyTools, jq, ncurses, sshpass, ... }:
+{ stdenv, fetchgit, bc, coreutils, curl, gnused, inotifyTools, jq, ncurses, sshpass, ... }:
 
 stdenv.mkDerivation {
-  name = "cac-1.0.0";
+  name = "cac-1.0.3";
 
   src = fetchgit {
-    url = http://cgit.gum/cac;
-    rev = "fe3b2ecb0aaf7d863842b896e18cd2b829f2297b";
-    sha256 = "05bnd7wyjhqy8srmpnc8d234rv3jxdjgb4z0hlfb9kg7mb12w1ya";
+    url = http://cgit.cd.retiolum/cac;
+    rev = "22acc1b990ac7d97c16344fbcbc2621e24cdf915";
+    sha256 = "135b740617c983b3f46a1983d4744be17340d5146a0a0de0dff4bb7a53688f2f";
   };
 
   phases = [
@@ -17,6 +17,7 @@ stdenv.mkDerivation {
   installPhase =
     let
       path = stdenv.lib.makeSearchPath "bin" [
+        bc
         coreutils
         curl
         gnused
@@ -29,10 +30,9 @@ stdenv.mkDerivation {
     ''
       mkdir -p $out/bin
 
-      sed \
-        's,^\(  true) \)\(cac "$@";;\)$,\1 PATH=${path}${PATH+:$PATH} \2,' \
-        < ./cac \
-        > $out/bin/cac
+      sed < ./cac > $out/bin/cac '
+        s;^_cac_main .*;PATH=${path}''${PATH+:$PATH} &;
+      '
 
       chmod +x $out/bin/cac
     '';
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 7df7b7d3c..0562fe836 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -40,6 +40,10 @@ subdirs // rec {
       }
     '';
 
+  test = {
+    infest-cac-centos7 = pkgs.callPackage ./test/infest-cac-centos7 {};
+  };
+
   execveBin = name: cfg: execve name (cfg // { destination = "/bin/${name}"; });
 
   writeC = name: { destination ? "" }: src: pkgs.runCommand name {} ''
diff --git a/krebs/5pkgs/test/infest-cac-centos7/default.nix b/krebs/5pkgs/test/infest-cac-centos7/default.nix
new file mode 100644
index 000000000..7f2e3f231
--- /dev/null
+++ b/krebs/5pkgs/test/infest-cac-centos7/default.nix
@@ -0,0 +1,39 @@
+{ stdenv, coreutils,makeWrapper, cac, cacpanel, gnumake, gnused, jq, openssh, ... }:
+
+stdenv.mkDerivation rec {
+  name = "${shortname}-${version}";
+  shortname = "infest-cac-centos7";
+  version = "0.2.0";
+
+  src = ./notes;
+
+  phases = [
+    "installPhase"
+  ];
+  buildInputs = [ makeWrapper ];
+
+  path = stdenv.lib.makeSearchPath "bin" [
+    coreutils
+    cac
+    cacpanel
+    gnumake
+    gnused
+    jq
+    openssh
+  ];
+
+  installPhase =
+    ''
+      mkdir -p $out/bin
+      cp ${src} $out/bin/${shortname}
+      chmod +x $out/bin/${shortname}
+      wrapProgram $out/bin/${shortname} \
+              --prefix PATH : ${path}
+    '';
+  meta = with stdenv.lib; {
+    homepage = http://krebsco.de;
+    description = "Krebs CI Scripts";
+    license = licenses.wtfpl;
+    maintainers = [ maintainers.makefu ];
+  };
+}
diff --git a/krebs/5pkgs/test/infest-cac-centos7/notes b/krebs/5pkgs/test/infest-cac-centos7/notes
new file mode 100755
index 000000000..5bb5de2c4
--- /dev/null
+++ b/krebs/5pkgs/test/infest-cac-centos7/notes
@@ -0,0 +1,116 @@
+#! /bin/sh
+
+# nix-shell -p gnumake jq openssh cac cacpanel
+set -eufx
+
+# 2 secrets are required:
+
+krebs_cred=${krebs_cred-./cac.json}
+retiolum_key=${retiolum_key-./retiolum.rsa_key.priv}
+
+# Sanity
+if test ! -r "$krebs_cred";then
+  echo "\$krebs_cred=$krebs_cred must be readable"; exit 1
+fi
+if test ! -r "$retiolum_key";then
+  echo "\$retiolum_key=$retiolum_key must be readable"; exit 1
+fi
+
+krebs_secrets=$(mktemp -d)
+sec_file=$krebs_secrets/cac_config
+krebs_ssh=$krebs_secrets/tempssh
+export cac_resources_cache=$krebs_secrets/res_cache.json
+export cac_servers_cache=$krebs_secrets/servers_cache.json
+export cac_tasks_cache=$krebs_secrets/tasks_cache.json
+export cac_templates_cache=$krebs_secrets/templates_cache.json
+# we need to receive this key from buildmaster to speed up tinc bootstrap
+TRAP="rm -r $krebs_secrets;trap - INT TERM EXIT"
+trap "$TRAP" INT TERM EXIT
+
+cat > $sec_file <<EOF
+cac_login="$(jq -r .email $krebs_cred)"
+cac_key="$(cac-cli panel --config $krebs_cred settings | jq -r .apicode)"
+EOF
+
+export cac_secrets=$sec_file
+cac-cli panel --config $krebs_cred update-api-ip
+
+# test login:
+cac update
+cac servers
+
+# Template 26: CentOS7
+# TODO: use cac templates to determine the real Centos7 template in case it changes
+name=$( cac build cpu=1 ram=512 storage=10 os=26 2>&1\
+  | jq -r .servername)
+
+id=servername:$name
+trap "cac delete $id;$TRAP;exit" INT TERM EXIT
+# TODO: timeout?
+
+wait_login_cac(){
+  # timeout
+  for t in `seq 180`;do
+    # now we have a working cac server
+    if cac ssh $1 -o ConnectTimeout=10 \
+                  cat /etc/redhat-release | \
+                    grep CentOS ;then
+      return 0
+    fi
+    sleep 10
+  done
+  return 1
+}
+# die on timeout
+wait_login_cac $id
+
+mkdir -p shared/2configs/temp
+cac generatenetworking $id > \
+  shared/2configs/temp/networking.nix
+# new temporary ssh key we will use to log in after infest
+ssh-keygen -f $krebs_ssh -N ""
+cp $retiolum_key $krebs_secrets/retiolum.rsa_key.priv
+# we override the directories for secrets and stockholm
+# additionally we set the ssh key we generated
+ip=$(cac getserver $id | jq -r .ip)
+
+cat > shared/2configs/temp/dirs.nix <<EOF
+_: {
+  krebs.build.source.dir = {
+    secrets.path = "$krebs_secrets";
+    stockholm.path = "$(pwd)";
+  };
+  users.extraUsers.root.openssh.authorizedKeys.keys = [
+    "$(cat ${krebs_ssh}.pub)"
+  ];
+  krebs.build.target = "$ip";
+}
+EOF
+
+LOGNAME=shared make eval get=krebs.infest \
+  target=derp system=test-centos7 filter=json \
+  | sed -e "s#^ssh.*<<#cac ssh $id<<#" \
+        -e "/^rsync/a -e 'cac ssh $id' \\\\"  \
+        -e "s#root.derp:#:#" > $krebs_secrets/infest
+sh -x $krebs_secrets/infest
+
+# TODO: generate secrets directory $krebs_secrets for nix import
+cac powerop $id reset
+
+wait_login(){
+  # timeout
+  for t in `seq 90`;do
+    # now we have a working cac server
+    if ssh -o StrictHostKeyChecking=no \
+           -o UserKnownHostsFile=/dev/null \
+           -i $krebs_ssh \
+           -o ConnectTimeout=10 \
+           -o BatchMode=yes \
+           root@$1 nixos-version ;then
+      return 0
+    fi
+    sleep 10
+  done
+  return 1
+}
+wait_login $ip
diff --git a/makefu/2configs/default.nix b/makefu/2configs/default.nix
index c0d7685e3..a0b49edaf 100644
--- a/makefu/2configs/default.nix
+++ b/makefu/2configs/default.nix
@@ -24,7 +24,7 @@ with lib;
         git.nixpkgs = {
           #url = https://github.com/NixOS/nixpkgs;
           url = mkDefault https://github.com/makefu/nixpkgs;
-          rev = mkDefault "78340b042463fd35caa587b0db2e400e5666dbe1"; # nixos-15.09 + cherry-picking
+          rev = mkDefault "3fd2c24685f604edc925f73ed56600b8c66236b3"; # nixos-15.09 + cherry-picking
           target-path = "/var/src/nixpkgs";
         };
 
diff --git a/makefu/3modules/buildbot/master.nix b/makefu/3modules/buildbot/master.nix
deleted file mode 100644
index 58e2f8175..000000000
--- a/makefu/3modules/buildbot/master.nix
+++ /dev/null
@@ -1,263 +0,0 @@
-{ config, pkgs, lib, ... }:
-
-with lib;
-let
-  buildbot = pkgs.buildbot;
-  buildbot-master-config = pkgs.writeText "buildbot-master.cfg" ''
-    # -*- python -*-
-    from buildbot.plugins import *
-    import re
-
-    c = BuildmasterConfig = {}
-
-    c['slaves'] = []
-    # TODO: template potential buildslaves
-    # TODO: set password?
-    slavenames= [ 'testslave' ]
-    for i in slavenames:
-      c['slaves'].append(buildslave.BuildSlave(i, "krebspass"))
-
-    c['protocols'] = {'pb': {'port': 9989}}
-
-    ####### Build Inputs
-    stockholm_repo = 'http://cgit.gum/stockholm'
-    c['change_source'] = []
-    c['change_source'].append(changes.GitPoller(
-            stockholm_repo,
-            workdir='stockholm-poller', branch='master',
-            project='stockholm',
-            pollinterval=120))
-
-    ####### Build Scheduler
-    # TODO: configure scheduler
-    c['schedulers'] = []
-
-    # test the master real quick
-    fast = schedulers.SingleBranchScheduler(
-                                change_filter=util.ChangeFilter(branch="master"),
-                                name="fast-master-test",
-                                builderNames=["fast-tests"])
-
-    force = schedulers.ForceScheduler(
-                                name="force",
-                                builderNames=["full-tests"])
-
-    # files everyone depends on or are part of the share branch
-    def shared_files(change):
-      r =re.compile("^((krebs|share)/.*|Makefile|default.nix)")
-      for file in change.files:
-        if r.match(file):
-          return True
-      return False
-
-    full = schedulers.SingleBranchScheduler(
-                                change_filter=util.ChangeFilter(branch="master"),
-                                fileIsImportant=shared_files,
-                                name="full-master-test",
-                                builderNames=["full-tests"])
-    c['schedulers'] = [ fast, force, full ]
-    ###### The actual build
-    # couple of fast steps:
-    f = util.BuildFactory()
-    ## fetch repo
-    grab_repo = steps.Git(repourl=stockholm_repo, mode='incremental')
-    f.addStep(grab_repo)
-
-    # the dependencies which are used by the test script
-    deps = [ "gnumake", "jq" ]
-    nixshell = ["nix-shell", "-p" ] + deps + [ "--run" ]
-    def addShell(f,**kwargs):
-      f.addStep(steps.ShellCommand(**kwargs))
-
-    addShell(f,name="centos7-eval",env={"LOGNAME": "shared",
-                  "get" : "krebs.deploy",
-                  "filter" : "json"
-                 },
-             command=nixshell + ["make -s eval system=test-centos7"])
-
-    addShell(f,name="wolf-eval",env={"LOGNAME": "shared",
-                  "get" : "krebs.deploy",
-                  "filter" : "json"
-                 },
-             command=nixshell + ["make -s eval system=wolf"])
-
-    c['builders'] = []
-    c['builders'].append(
-        util.BuilderConfig(name="fast-tests",
-          slavenames=slavenames,
-          factory=f))
-
-    # TODO slow build
-    c['builders'].append(
-        util.BuilderConfig(name="full-tests",
-          slavenames=slavenames,
-          factory=f))
-
-    ####### Status of Builds
-    c['status'] = []
-
-    from buildbot.status import html
-    from buildbot.status.web import authz, auth
-    # TODO: configure if http is wanted
-    authz_cfg=authz.Authz(
-        # TODO: configure user/pw
-        auth=auth.BasicAuth([("krebs","bob")]),
-        gracefulShutdown = False,
-        forceBuild = 'auth',
-        forceAllBuilds = 'auth',
-        pingBuilder = False,
-        stopBuild = False,
-        stopAllBuilds = False,
-        cancelPendingBuild = False,
-    )
-    # TODO: configure nginx
-    c['status'].append(html.WebStatus(http_port=8010, authz=authz_cfg))
-
-    from buildbot.status import words
-    ${optionalString (cfg.irc.enable) ''
-      irc = words.IRC("${cfg.irc.server}", "krebsbuild",
-                      # TODO: multiple channels
-                      channels=["${cfg.irc.channel}"],
-                      notify_events={
-                        #'success': 1,
-                        #'failure': 1,
-                        'exception': 1,
-                        'successToFailure': 1,
-                        'failureToSuccess': 1,
-                      }${optionalString cfg.irc.allowForce ",allowForce=True"})
-      c['status'].append(irc)
-      ''}
-
-    ####### PROJECT IDENTITY
-    c['title'] = "Stockholm"
-    c['titleURL'] = "http://krebsco.de"
-
-    #c['buildbotURL'] = "http://buildbot.krebsco.de/"
-    # TODO: configure url
-    c['buildbotURL'] = "http://vbob:8010/"
-
-    ####### DB URL
-    c['db'] = {
-        'db_url' : "sqlite:///state.sqlite",
-    }
-    ${cfg.extraConfig}
-    '';
-
-  cfg = config.makefu.buildbot.master;
-
-  api = {
-    enable = mkEnableOption "Buildbot Master";
-    workDir = mkOption {
-      default = "/var/lib/buildbot/master";
-      type = types.str;
-      description = ''
-        Path to build bot master directory.
-        Will be created on startup.
-      '';
-    };
-    irc = mkOption {
-      default = {};
-      type = types.submodule ({ config, ... }: {
-        options = {
-          enable = mkEnableOption "Buildbot Master IRC Status";
-          channel = mkOption {
-            default = "nix-buildbot-meetup";
-            type = types.str;
-            description = ''
-              irc channel the bot should connect to
-            '';
-          };
-          allowForce = mkOption {
-            default = false;
-            type = types.bool;
-            description = ''
-              Determines if builds can be forced via IRC
-            '';
-          };
-          nick = mkOption {
-            default = "nix-buildbot";
-            type = types.str;
-            description = ''
-              nickname for IRC
-            '';
-          };
-          server = mkOption {
-            default = "irc.freenode.net";
-            type = types.str;
-            description = ''
-              Buildbot Status IRC Server to connect to
-            '';
-          };
-        };
-      });
-    };
-
-    extraConfig = mkOption {
-      default = "";
-      type = types.lines;
-      description = ''
-        extra config appended to the generated master.cfg
-      '';
-    };
-  };
-
-  imp = {
-
-    users.extraUsers.buildbotMaster = {
-      uid = 672626386; #genid buildbotMaster
-      description = "Buildbot Master";
-      home = cfg.workDir;
-      createHome = false;
-    };
-
-    users.extraGroups.buildbotMaster = {
-      gid = 672626386;
-    };
-
-    systemd.services.buildbotMaster = {
-      description = "Buildbot Master";
-      after = [ "network.target" ];
-      wantedBy = [ "multi-user.target" ];
-      path = [ pkgs.git ];
-      serviceConfig = let
-        workdir="${lib.shell.escape cfg.workDir}";
-        # TODO: check if git is the only dep
-      in {
-        PermissionsStartOnly = true;
-        Type = "forking";
-        PIDFile = "${workdir}/twistd.pid";
-        # TODO: maybe also prepare buildbot.tac?
-        ExecStartPre = pkgs.writeScript "buildbot-master-init" ''
-          #!/bin/sh
-          set -efux
-          if [ ! -e ${workdir} ];then
-            mkdir -p ${workdir}
-            ${buildbot}/bin/buildbot create-master -r -l 10 -f ${workdir}
-          fi
-          # always override the master.cfg
-          cp ${buildbot-master-config} ${workdir}/master.cfg
-          # sanity
-          ${buildbot}/bin/buildbot checkconfig ${workdir}
-
-          # TODO: maybe upgrade? not sure about this
-          #       normally we should write buildbot.tac by our own
-          # ${buildbot}/bin/buildbot upgrade-master ${workdir}</