Background changer for Gnome

custom/update-background/default.nix

@@ -1,4 +1,12 @@
-{ lib, stdenv, feh, findutils, gnugrep, coreutils, writeScript, backgrounds_directory ? "$HOME/Immagini/Sfondi" }:
+{ lib
+, stdenv
+, feh
+, glib
+, findutils
+, gnugrep
+, coreutils
+, writeScript
+, backgrounds_directory ? "$HOME/Immagini/Sfondi"}:
 let
   find = "${findutils}/bin/find";
   grep = "${gnugrep}/bin/grep";
@@ -9,4 +17,5 @@ writeScript "update-background.sh" ''
   image=`${find} ${backgrounds_directory} -type f | ${grep} -v "/\." | ${shuf} -n 1`
   echo "image: $image"
   ${feh}/bin/feh --bg-fill --no-fehbg "$image"
+  ${glib}/bin/gsettings set org.gnome.desktop.background picture-uri "file://$image"
 ''

modules/update_background.nix

@@ -1,7 +1,5 @@
 { pkgs, config, ... }:
 let
-  fehCmd = "${pkgs.feh}/bin/feh";
-  backgrounds_directory = ~/Immagini/Sfondi;
   update_time = "10m";
 in
 {