colorize wallpaper

home/tiling/wallpaper.nix

@@ -1,5 +1,6 @@
 {
   pkgs,
+  config,
   ...
 }:
 {
@@ -7,7 +8,7 @@
     Unit.Description = "Wallpaper service using wbg (daemon)";
     Service.ExecStart = ''
       ${pkgs.wbg}/bin/wbg -s \
-      %h/.local/share/wallpaper/daily.jpg
+      %h/.local/share/wallpaper/daily-colored.jpg
     '';
     Install.WantedBy = [ "niri.service" ];
   };
@@ -45,7 +46,7 @@
         '';
       }
     );
-    Service.ExecStartPost = "${pkgs.systemd}/bin/systemctl --user restart wbg-daemon.service";
+    Service.ExecStartPost = "${pkgs.systemd}/bin/systemctl --user start gowall-convert.service";
     Install.WantedBy = [ "niri.service" ];
   };
 
@@ -55,4 +56,52 @@
     Timer.Persistent = true;
     Install.WantedBy = [ "timers.target" ];
   };
+
+  systemd.user.services.gowall-convert = {
+    Unit.Description = "Convert a wallpaper to the system color scheme";
+    Unit.StartLimitBurst = 6;
+    Unit.StartLimitIntervalSec = "10m";
+    Service.Restart = "on-failure";
+    Service.RestartSec = "10s";
+    Service.Type = "oneshot";
+    Service.ExecStart = ''
+      ${pkgs.gowall}/bin/gowall convert \
+      %h/.local/share/wallpaper/daily.jpg \
+      --output %h/.local/share/wallpaper/daily-colored.jpg \
+      -t nix
+    '';
+    Service.ExecStartPost = "${pkgs.systemd}/bin/systemctl --user restart wbg-daemon.service";
+  };
+
+  home.file.".config/gowall/config.yml".text = with config.scheme.withHashtag; ''
+    themes:
+      - name: "nix"
+        colors:
+          - "${base06}"
+          - "${base0F}"
+          - "${base17}"
+          - "${base0E}"
+          - "${base08}"
+          - "${base12}"
+          - "${base09}"
+          - "${base0A}"
+          - "${base0B}"
+          - "${base0C}"
+          - "${base15}"
+          - "${base16}"
+          - "${base0D}"
+          - "${base07}"
+          - "${base05}"
+          - "${base07}"
+          - "${base0D}"
+          - "${base0D}"
+          - "${base04}"
+          - "${base04}"
+          - "${base04}"
+          - "${base03}"
+          - "${base02}"
+          - "${base00}"
+          - "${base01}"
+          - "${base11}"
+  '';
 }