picom: write complete config directly to fix animations syntax

Give up on @include workarounds - libconfig doesn't support ~.
Write the complete picom config directly with correct () list syntax
for animations, using xdg.configFile with force=true to override
home-manager's generated config.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

nixos/xmonad.nix

@@ -92,56 +92,23 @@ makeEnable config "myModules.xmonad" true  {
       enable = true;
     };
 
+    # Disable home-manager's picom config generation - we'll write a complete config
+    # ourselves to work around the libconfig list vs array syntax issue
     services.picom = {
       enable = true;
       vSync = config.myModules.xmonad.picom.vSync.enable;
       backend = "glx";
-
-      settings = {
-        # Note: animations must use () not [] in libconfig, so we put them in extraArgs
-        # via xdg.configFile below
-
-        fade-in-step = 0.028;
-        fade-out-step = 0.028;
-        fading = true;
-
-        focus-exclude = ["class_g ?= 'rofi'" "class_g ?= 'Steam'"];
-        rounded-corners-exclude = [
-          "! name~=''" # Qtile == empty wm_class..
-          "window_type = 'dock'"
-          "window_type = 'desktop'"
-          "class_g ?= 'Dunst'"
-        ];
-
-        corner-radius = 10;
-        round-borders = 0;
-        round-borders-exclude = [
-          "! name~=''" # Qtile == empty wm_class..
-        ];
-
-        daemon = false;
-        dbus = false;
-        mark-wmwin-focused = false;
-        mark-ovredir-focused = false;
-        detect-rounded-corners = true;
-        detect-client-opacity = true;
-
-        unredir-if-possible = false;
-        unredir-if-possible-exclude = [];
-        detect-transient = true;
-        detect-client-leader = true;
-
-        invert-color-include = [];
-        glx-no-stencil = true;
-        use-damage = false;
-        transparent-clipping = false;
-      };
     };
 
-    # Spring physics animations config - written separately because home-manager
+    # Write complete picom config directly to avoid home-manager's libconfig generator
-    # generates [] (arrays) but picom needs () (lists) for animations
+    # which incorrectly uses [] instead of () for the animations list
-    # Use @include directive in main config to include this
+    xdg.configFile."picom/picom.conf" = {
-    xdg.configFile."picom/animations.conf".text = ''
+      force = true;  # Override home-manager's generated config
+      text = ''
+        # Backend and basic settings
+        backend = "glx";
+        vsync = ${if config.myModules.xmonad.picom.vSync.enable then "true" else "false"};
+
         # Spring physics animations (mainline picom with spring-physics branch)
         # Syntax: spring(stiffness, dampening, mass) or spring(stiffness, dampening, mass, clamping)
         # Set clamping to false for bounce/overshoot effects
@@ -204,21 +171,45 @@ makeEnable config "myModules.xmonad" true  {
             };
           }
         );
-    '';
 
-    # Wrapper config that includes both home-manager generated config and animations
+        # Fading
-    # This works around picom not supporting multiple --config flags
+        fading = true;
-    # Must use absolute paths since files are symlinks to nix store
+        fade-in-step = 0.028;
-    xdg.configFile."picom/picom-with-animations.conf".text = ''
+        fade-out-step = 0.028;
-      # Include home-manager generated base config
-      @include "~/.config/picom/picom.conf"
-      # Include spring physics animations (uses () list syntax)
-      @include "~/.config/picom/animations.conf"
-    '';
 
-    # Override picom service to use our wrapper config
+        # Corners
-    systemd.user.services.picom = {
+        corner-radius = 10;
-      Service.ExecStart = pkgs.lib.mkForce "${pkgs.picom}/bin/picom --config %h/.config/picom/picom-with-animations.conf";
+        round-borders = 0;
+        rounded-corners-exclude = [
+          "! name~='''",
+          "window_type = 'dock'",
+          "window_type = 'desktop'",
+          "class_g ?= 'Dunst'"
+        ];
+        round-borders-exclude = [
+          "! name~='''"
+        ];
+
+        # Focus and opacity
+        focus-exclude = ["class_g ?= 'rofi'", "class_g ?= 'Steam'"];
+        invert-color-include = [];
+
+        # Detection
+        detect-rounded-corners = true;
+        detect-client-opacity = true;
+        detect-transient = true;
+        detect-client-leader = true;
+        mark-wmwin-focused = false;
+        mark-ovredir-focused = false;
+
+        # Other settings
+        daemon = false;
+        dbus = false;
+        unredir-if-possible = false;
+        unredir-if-possible-exclude = [];
+        use-damage = false;
+        transparent-clipping = false;
+      '';
     };
 
     # systemd.user.services.notifications-tray-icon = {