feat: Patch Brave webapps

The generated .desktop files seem to point to the brave binary on the nix
store at the time of creation, so for now I just sed them to the generic
executable on path

modules/home/gui/chromium.nix

@@ -1,16 +1,36 @@
 {
   config,
   inputs,
+  lib,
   pkgs,
   ...
 }: let
   inherit (inputs.home-manager.lib) hm;
-in {
-  programs.chromium = {
-    enable = true;
-    commandLineArgs = [
-      "--disable-gpu-compositing" # @TODO Remove after NVIDIA figures this out
-    ];
-    package = pkgs.brave;
-  };
-}
+in
+  lib.mkIf (config.my.modules.gui.enable) {
+    programs.chromium = {
+      enable = true;
+      commandLineArgs = [
+        "--disable-gpu-compositing" # @TODO Remove after NVIDIA figures this out
+      ];
+      package = pkgs.brave;
+    };
+
+    home.activation.patchBraveWebapps = let
+      inherit (config.programs.chromium) package;
+      executable = package.meta.mainProgram;
+      script =
+        hm.dag.entryAfter
+        ["writeBoundary"]
+        # bash
+        ''
+          # Patches webapps so that they point to the executable on path
+          run --quiet \
+          find '${config.home.homeDirectory}/.local/share/applications' \
+            -type f -name 'brave-*.desktop' \
+          | xargs --no-run-if-empty \
+            sed --in-place 's,Exec=[^ ]*,Exec=${executable},g'
+        '';
+    in
+      lib.mkIf (package == pkgs.brave) script;
+  }