1 files changed, 97 insertions, 0 deletions
diff --git a/infra/libkookie/home-manager/modules/services/wlsunset.nix b/infra/libkookie/home-manager/modules/services/wlsunset.nix
new file mode 100644
index 000000000000..084dbdb7c3d6
--- /dev/null
+++ b/infra/libkookie/home-manager/modules/services/wlsunset.nix
@@ -0,0 +1,97 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.services.wlsunset;
+
+in {
+  meta.maintainers = [ maintainers.matrss ];
+
+  options.services.wlsunset = {
+    enable = mkEnableOption "Whether to enable wlsunset.";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.wlsunset;
+      defaultText = "pkgs.wlsunset";
+      description = ''
+        wlsunset derivation to use.
+      '';
+    };
+
+    latitude = mkOption {
+      type = types.str;
+      description = ''
+        Your current latitude, between <literal>-90.0</literal> and
+        <literal>90.0</literal>.
+      '';
+    };
+
+    longitude = mkOption {
+      type = types.str;
+      description = ''
+        Your current longitude, between <literal>-180.0</literal> and
+        <literal>180.0</literal>.
+      '';
+    };
+
+    temperature = {
+      day = mkOption {
+        type = types.int;
+        default = 6500;
+        description = ''
+          Colour temperature to use during the day, in Kelvin (K).
+          This value must be greater than <literal>temperature.night</literal>.
+        '';
+      };
+
+      night = mkOption {
+        type = types.int;
+        default = 4000;
+        description = ''
+          Colour temperature to use during the night, in Kelvin (K).
+          This value must be smaller than <literal>temperature.day</literal>.
+        '';
+      };
+    };
+
+    gamma = mkOption {
+      type = types.str;
+      default = "1.0";
+      description = ''
+        Gamma value to use.
+      '';
+    };
+
+    systemdTarget = mkOption {
+      type = types.str;
+      default = "graphical-session.target";
+      description = ''
+        Systemd target to bind to.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.wlsunset = {
+      Unit = {
+        Description = "Day/night gamma adjustments for Wayland compositors.";
+        PartOf = [ "graphical-session.target" ];
+      };
+
+      Service = {
+        ExecStart = let
+          args = [
+            "-l ${cfg.latitude}"
+            "-L ${cfg.longitude}"
+            "-t ${toString cfg.temperature.night}"
+            "-T ${toString cfg.temperature.day}"
+            "-g ${cfg.gamma}"
+          ];
+        in "${cfg.package}/bin/wlsunset ${concatStringsSep " " args}";
+      };
+
+      Install = { WantedBy = [ cfg.systemdTarget ]; };
+    };
+  };
+}