Update flake.nix (#406)

flake.nix

@@ -18,20 +18,28 @@
       mkPackage = pkgs: {
         swayfx-unwrapped =
           (pkgs.swayfx-unwrapped.override {
+            # This override block is currently empty, you might remove it
+            # unless you intend to override function arguments later.
           }).overrideAttrs
             (old: {
               version = "0.4.0-git";
               src = pkgs.lib.cleanSource ./.;
               nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.cmake ];
-              buildInputs = old.buildInputs ++ [ pkgs.scenefx ];
+              # Add wlroots_0_18 here
+              buildInputs = old.buildInputs ++ [
+                pkgs.scenefx
+                pkgs.wlroots_0_18 # <-- Added this line
+              ];
               providedSessions = [ pkgs.swayfx-unwrapped.meta.mainProgram ];
-              patches = []; ## this should probably be fixed properly
+              patches = []; ## Consider if you need patches from the original derivation
               mesonFlags = let
                 inherit (pkgs.lib.strings) mesonEnable mesonOption;
               in
                 [
                   (mesonOption "sd-bus-provider" "libsystemd")
                   (mesonEnable "tray" true)
+                  # You might need to explicitly enable fx if the default changed
+                  # (mesonEnable "fx" true) # <-- Potentially add this if needed
                 ];
             });
       };
@@ -65,8 +73,16 @@
       devShells = forEachSystem (pkgs: {
         default = pkgs.mkShell {
           name = "swayfx-shell";
+          # inputsFrom propagates buildInputs, nativeBuildInputs etc. from the listed derivations
+          # Adding wlroots and scenefx explicitly here is fine, but they are also included via inputsFrom
           inputsFrom = [
             self.packages.${pkgs.system}.swayfx-unwrapped
+            # pkgs.wlroots_0_18 # Included via swayfx-unwrapped buildInputs now
+            # pkgs.scenefx      # Included via swayfx-unwrapped buildInputs now
+          ];
+          # You still might want wlroots/scenefx here if you need tools/headers directly in the shell
+          # outside of what swayfx uses.
+          buildInputs = [
             pkgs.wlroots_0_18
             pkgs.scenefx
           ];
@@ -76,10 +92,16 @@
           shellHook = ''
             (
               # Copy the nix version of wlroots and scenefx into the project
+              # This is useful if you want meson to use them as subprojects during manual dev/testing
+              echo "Copying wlroots and scenefx sources to ./subprojects for dev environment..."
               mkdir -p "$PWD/subprojects" && cd "$PWD/subprojects"
+              rm -rf wlroots scenefx # Clean previous copies if they exist
               cp -R --no-preserve=mode,ownership ${pkgs.wlroots_0_18.src} wlroots
               cp -R --no-preserve=mode,ownership ${pkgs.scenefx.src} scenefx
-            )'';
+              echo "Done copying sources."
+              cd "$OLDPWD"
+            ) || echo "Failed to copy subproject sources."
+          '';
         };
       });