Move picom to it's own module

flake.nix

@@ -19,7 +19,7 @@
 
   outputs = inputs@{ self, home-manager, nixpkgs, nixpkgs-unstable, ... }:
     let
-      inherit (lib.my) mapModules mapModulesRec mkHost;
+      inherit (lib.my) mapModules mapModulesRec mkHost mapHosts;
 
       system = "x86_64-linux";
 
@@ -51,9 +51,7 @@
 
       overlays = { my = (import ./overlay.nix); };
 
-      nixosConfigurations = {
+      nixosConfigurations = (mapHosts ./hosts { }) // {
-        nixos-desktop = mkHost ./hosts/nixos-desktop/default.nix { };
-        froidmpa-laptop = mkHost ./hosts/froidmpa-laptop/default.nix { };
         rpi3 = nixpkgs.lib.nixosSystem {
           system = "aarch64-linux";
           specialArgs = { inherit inputs; };

modules/desktop/default.nix

@@ -32,69 +32,6 @@ in {
       };
 
       services = {
-        picom = {
-          backend = "glx";
-          vSync = true;
-          opacityRules = [
-            # "100:class_g = 'Firefox'"
-            # Art/image programs where we need fidelity
-            "100:class_g = 'Gimp'"
-            "100:class_g = 'Inkscape'"
-            "100:class_g = 'aseprite'"
-            "100:class_g = 'krita'"
-            "100:class_g = 'feh'"
-            "100:class_g = 'mpv'"
-            "100:class_g = 'Rofi'"
-            "100:class_g = 'Peek'"
-            "99:_NET_WM_STATE@:32a = '_NET_WM_STATE_FULLSCREEN'"
-          ];
-          shadowExclude = [
-            # Put shadows on notifications, the scratch popup and rofi only
-            "! name~='(rofi|scratch|Dunst)$'"
-          ];
-
-          fade = true;
-          fadeDelta = 1;
-          fadeSteps = [ 1.0e-2 1.2e-2 ];
-          shadow = true;
-          shadowOffsets = [ (-10) (-10) ];
-          shadowOpacity = 0.22;
-          # activeOpacity = "1.00";
-          # inactiveOpacity = "0.92";
-          #
-          settings = {
-            blur-background-exclude = [
-              "window_type = 'dock'"
-              "window_type = 'desktop'"
-              "class_g = 'Rofi'"
-              "_GTK_FRAME_EXTENTS@:c"
-            ];
-
-            # Unredirect all windows if a full-screen opaque window is detected, to
-            # maximize performance for full-screen windows. Known to cause
-            # flickering when redirecting/unredirecting windows.
-            unredir-if-possible = true;
-
-            # GLX backend: Avoid using stencil buffer, useful if you don't have a
-            # stencil buffer. Might cause incorrect opacity when rendering
-            # transparent content (but never practically happened) and may not work
-            # with blur-background. My tests show a 15% performance boost.
-            # Recommended.
-            glx-no-stencil = true;
-
-            # Use X Sync fence to sync clients' draw calls, to make sure all draw
-            # calls are finished before picom starts drawing. Needed on
-            # nvidia-drivers with GLX backend for some users.
-            xrender-sync-fence = true;
-
-            shadow-radius = 12;
-            # blur-background = true;
-            # blur-background-frame = true;
-            # blur-background-fixed = true;
-            blur-kern = "7x7box";
-            blur-strength = 320;
-          };
-        };
         nextcloud-client.enable = true;
         udiskie.enable = true;
         gpg-agent = {

modules/desktop/picom.nix

@@ -0,0 +1,76 @@
+{ inputs, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.picom;
+in {
+  options.modules.desktop.picom = { enable = mkBoolOpt false; };
+
+  config = mkIf cfg.enable {
+    home-manager.users.${config.user.name} = {
+      services.picom = {
+        backend = "glx";
+        vSync = true;
+        opacityRules = [
+          # "100:class_g = 'Firefox'"
+          # Art/image programs where we need fidelity
+          "100:class_g = 'Gimp'"
+          "100:class_g = 'Inkscape'"
+          "100:class_g = 'aseprite'"
+          "100:class_g = 'krita'"
+          "100:class_g = 'feh'"
+          "100:class_g = 'mpv'"
+          "100:class_g = 'Rofi'"
+          "100:class_g = 'Peek'"
+          "99:_NET_WM_STATE@:32a = '_NET_WM_STATE_FULLSCREEN'"
+        ];
+        shadowExclude = [
+          # Put shadows on notifications, the scratch popup and rofi only
+          "! name~='(rofi|scratch|Dunst)$'"
+        ];
+
+        fade = true;
+        fadeDelta = 1;
+        fadeSteps = [ 1.0e-2 1.2e-2 ];
+        shadow = true;
+        shadowOffsets = [ (-10) (-10) ];
+        shadowOpacity = 0.22;
+        # activeOpacity = "1.00";
+        # inactiveOpacity = "0.92";
+        #
+        settings = {
+          blur-background-exclude = [
+            "window_type = 'dock'"
+            "window_type = 'desktop'"
+            "class_g = 'Rofi'"
+            "_GTK_FRAME_EXTENTS@:c"
+          ];
+
+          # Unredirect all windows if a full-screen opaque window is detected, to
+          # maximize performance for full-screen windows. Known to cause
+          # flickering when redirecting/unredirecting windows.
+          unredir-if-possible = true;
+
+          # GLX backend: Avoid using stencil buffer, useful if you don't have a
+          # stencil buffer. Might cause incorrect opacity when rendering
+          # transparent content (but never practically happened) and may not work
+          # with blur-background. My tests show a 15% performance boost.
+          # Recommended.
+          glx-no-stencil = true;
+
+          # Use X Sync fence to sync clients' draw calls, to make sure all draw
+          # calls are finished before picom starts drawing. Needed on
+          # nvidia-drivers with GLX backend for some users.
+          xrender-sync-fence = true;
+
+          shadow-radius = 12;
+          # blur-background = true;
+          # blur-background-frame = true;
+          # blur-background-fixed = true;
+          blur-kern = "7x7box";
+          blur-strength = 320;
+        };
+      };
+    };
+  };
+}

modules/desktop/xmonad/xmonad.nix

@@ -12,6 +12,7 @@ in {
     modules = {
       desktop = {
         polybar.enable = true;
+        picom.enable = true;
         themes = {
           gtk.enable = true;
           qt.enable = true;