From 5fde514b88336b3ed00d41ef2e72ad4e2da23deb Mon Sep 17 00:00:00 2001
From: lassulus <lass@aidsballs.de>
Date: Sat, 12 Dec 2015 17:50:33 +0100
Subject: [PATCH] l 3: add fetchWallpaper.nix
---
lass/3modules/default.nix | 1 +
lass/3modules/fetchWallpaper.nix | 89 ++++++++++++++++++++++++++++++++
2 files changed, 90 insertions(+)
create mode 100644 lass/3modules/fetchWallpaper.nix
diff --git a/lass/3modules/default.nix b/lass/3modules/default.nix
index 0dcad971c..5fa5160ee 100644
--- a/lass/3modules/default.nix
+++ b/lass/3modules/default.nix
@@ -8,5 +8,6 @@ _:
./urxvtd.nix
./xresources.nix
./wordpress_nginx.nix
+ ./fetchWallpaper.nix
];
}
diff --git a/lass/3modules/fetchWallpaper.nix b/lass/3modules/fetchWallpaper.nix
new file mode 100644
index 000000000..9baebedbd
--- /dev/null
+++ b/lass/3modules/fetchWallpaper.nix
@@ -0,0 +1,89 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+ cfg = config.lass.fetchWallpaper;
+
+ out = {
+ options.lass.fetchWallpaper = api;
+ config = mkIf cfg.enable imp;
+ };
+
+ api = {
+ enable = mkEnableOption "fetch wallpaper";
+ predicate = mkOption {
+ type = with types; nullOr path;
+ default = null;
+ };
+ url = mkOption {
+ type = types.str;
+ };
+ timerConfig = mkOption {
+ type = types.unspecified;
+ default = {
+ OnCalendar = "*:00,10,20,30,40,50";
+ };
+ };
+ stateDir = mkOption {
+ type = types.str;
+ default = "/tmp/wallpaper";
+ };
+ display = mkOption {
+ type = types.str;
+ default = ":11";
+ };
+ };
+
+ fetchWallpaperScript = pkgs.writeScript "fetchWallpaper" ''
+ #! ${pkgs.bash}/bin/bash
+ ${if (cfg.predicate == null) then "" else ''
+ ${cfg.predicate}
+ if [ $? -ne 0 ]; then
+ echo "predicate failed"
+ exit 23
+ fi
+ ''}
+ mkdir -p ${shell.escape cfg.stateDir}
+ curl -s -o ${shell.escape cfg.stateDir}/wallpaper -z ${shell.escape cfg.stateDir}/wallpaper ${shell.escape cfg.url}
+ feh --no-fehbg --bg-scale ${shell.escape cfg.stateDir}/wallpaper
+ '';
+
+ imp = {
+ users.extraUsers.fetchWallpaper = {
+ name = "fetchWallpaper";
+ uid = 3332383611; #genid fetchWallpaper
+ description = "fetchWallpaper user";
+ home = "/var/empty";
+ };
+
+ systemd.timers.fetchWallpaper = {
+ description = "fetch wallpaper timer";
+ wantedBy = [ "timers.target" ];
+
+ timerConfig = cfg.timerConfig;
+ };
+ systemd.services.fetchWallpaper = {
+ description = "fetch wallpaper";
+ after = [ "network.target" ];
+
+ path = with pkgs; [
+ curl
+ feh
+ ];
+
+ environment = {
+ URL = cfg.url;
+ DISPLAY = cfg.display;
+ };
+
+ restartIfChanged = true;
+
+ serviceConfig = {
+ Type = "simple";
+ ExecStart = fetchWallpaperScript;
+ User = "fetchWallpaper";
+ };
+ };
+ };
+in out