lsfg-vk-ui: init

flake.nix

@@ -6,9 +6,11 @@
     forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" ];
   in 
   {
-    packages = forAllSystems (system:
-      { default = nixpkgs.legacyPackages.${system}.callPackage ./default.nix { }; }
-    );
+    packages = forAllSystems (system: { 
+      default = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk.nix { };
+      lsfg-vk = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk.nix { };
+      lsfg-vk-ui = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk-ui.nix { };
+    });
 
     nixosModules.default = import ./module.nix;
   };

lsfg-vk-ui.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  fetchFromGitHub,
+  rustPlatform,
+  pkg-config,
+  glib,
+  pango,
+  gdk-pixbuf,
+  gtk4,
+  libadwaita
+}:
+
+rustPlatform.buildRustPackage {
+  pname = "lsfg-vk-ui";
+  version = "unstable-2025-07-25-e8f8056";
+
+  src = fetchFromGitHub {
+    owner = "PancakeTAS";
+    repo = "lsfg-vk";
+    rev = "e8f805632307ab526a989b33dcf9653c5679d374";
+    hash = "sha256-3EmH8skhpa0ELYE3UoV2SanGUqjC9nu8IPE3JPny+V4=";
+  };
+  
+  cargoHash = "sha256-EMVDcThepj8Lq42NBxROPUin94TikUdwR/wTVXn2tI0=";
+
+  sourceRoot = "source/ui";
+
+  nativeBuildInputs = [
+    pkg-config
+    glib
+  ];
+
+  buildInputs = [
+    pango
+    gdk-pixbuf
+    gtk4
+    libadwaita
+  ];
+
+  meta = with lib; {
+    description = "Graphical interface for lsfg-vk";
+    homepage = "https://github.com/PancakeTAS/lsfg-vk/";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    mainProgram = "lsfg-vk-ui";
+  };
+}

lsfg-vk.nix

@@ -18,6 +18,11 @@ llvmPackages.stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
+  postPatch = ''
+    substituteInPlace VkLayer_LS_frame_generation.json \
+      --replace "liblsfg-vk.so" "$out/lib/liblsfg-vk.so"
+  '';
+
   cmakeFlags = [
     "-DCMAKE_BUILD_TYPE=Release"
   ];

module.nix

@@ -6,40 +6,41 @@
 }:
 let
   cfg = config.services.lsfg-vk;
-  lsfg-vk = pkgs.callPackage ./default.nix { };
+  lsfg-vk = pkgs.callPackage ./lsfg-vk.nix { };
+  lsfg-vk-ui = pkgs.callPackage ./lsfg-vk-ui.nix { };
 in
 {
   options = {
     services.lsfg-vk = {
       enable = lib.mkEnableOption "Lossless Scaling Frame Generation Vulkan layer";
 
+      ui.enable = lib.mkEnableOption "Enables a GUI for configuring lsfg-vk";
+
       package = lib.mkOption {
         type = lib.types.package;
         description = "The lsfg-vk package to use";
         default = lsfg-vk;
       };
 
-      losslessDLLFile = lib.mkOption
-          {
-            type = with lib.types; nullOr str;
-            default = null;
-            example = "/home/user/games/Lossless Scaling/Lossless.dll";
-            description = ''
-              Sets the LSFG_DLL_PATH environment variable.
-              Required if Lossless Scaling isn't installed in a standard location
-            '';
-          };
+      losslessDLLFile = lib.mkOption {
+        type = with lib.types; nullOr str;
+        default = null;
+        example = "/home/user/games/Lossless Scaling/Lossless.dll";
+        description = ''
+          Sets the LSFG_DLL_PATH environment variable.
+          Required if Lossless Scaling isn't installed in a standard location
+        '';
+      };
 
-      configFile = lib.mkOption
-          {
-            type = with lib.types; nullOr str;
-            default = null;
-            example = "/home/user/.config/lsfg-vk/conf.toml";
-            description = ''
-              Sets the LSFG_CONFIG environment variable.
-              Required if the lsfg-vk configuration file isn't stored at the standard location
-            '';
-          };
+      configFile = lib.mkOption {
+        type = with lib.types; nullOr str;
+        default = null;
+        example = "/home/user/.config/lsfg-vk/conf.toml";
+        description = ''
+          Sets the LSFG_CONFIG environment variable.
+          Required if the lsfg-vk configuration file isn't stored at the standard location
+        '';
+      };
     };
   };
 
@@ -52,6 +53,9 @@ in
         environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source =
           "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
       }
+      (lib.mkIf cfg.ui.enable {
+        environment.systemPackages = [ lsfg-vk-ui ];
+      })
       (lib.mkIf (cfg.losslessDLLFile != null) {
         environment.sessionVariables.LSFG_DLL_PATH =
           lib.warn "losslessDLLFile is deprecated and will only be used by lsfg-vk if LSFG_LEGACY is set."