default.nix: update lsfg-vk to e67fcd3

spirv-headers got vendored? huh

default.nix

@@ -6,7 +6,6 @@
   vulkan-headers,
   vulkan-loader,
   llvmPackages,
-  spirv-headers,
   libX11,
   libXrandr,
   libXinerama,
@@ -21,13 +20,13 @@
 
 llvmPackages.stdenv.mkDerivation {
   pname = "lsfg-vk";
-  version = "unstable-2025-07-19-dd5190a";
+  version = "unstable-2025-07-20-e67fcd3";
 
   src = fetchFromGitHub {
     owner = "PancakeTAS";
     repo = "lsfg-vk";
-    rev = "dd5190aa680a7543143e724a100bd5d6e9898dd7";
+    rev = "e67fcd3dd832c9d177ad2be780e5dd0e47810bdf";
-    hash = "sha256-2WrUtjUG8l3tSElDYfhvi4lrFUG1Oh5M7DAEX2mFh5s=";
+    hash = "sha256-c0anP3lWJ2GcjJNGIHcY/sS86AS1tFk0t7vXbaEGTQg=";
     fetchSubmodules = true;
   };
 
@@ -49,7 +48,6 @@ llvmPackages.stdenv.mkDerivation {
   buildInputs = [
     vulkan-headers
     vulkan-loader
-    spirv-headers
     libX11
     libXrandr
     libXinerama

module.nix

@@ -19,9 +19,7 @@ in
         default = lsfg-vk;
       };
 
-      losslessDLLFile =
+      losslessDLLFile = lib.mkOption
-        lib.warn "losslessDLLFile is deprecated and will only be used by lsfg-vk if LSFG_LEGACY is set."
-          lib.mkOption
           {
             type = with lib.types; nullOr str;
             default = null;
@@ -45,15 +43,23 @@ in
     };
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf cfg.enable (
+    lib.mkMerge [
+      {
         environment.systemPackages = [ cfg.package ];
 
         # Installs the Vulkan implicit layer system-wide
         environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source =
           "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
-
+      }
-    environment.sessionVariables.LSFG_DLL_PATH = lib.mkIf (cfg.losslessDLLFile != null) cfg.losslessDLLFile;
+      (lib.mkIf (cfg.losslessDLLFile != null) {
-
+        environment.sessionVariables.LSFG_DLL_PATH =
-    environment.sessionVariables.LSFG_CONFIG = lib.mkIf (cfg.configFile != null) cfg.configFile;
+          lib.warn "losslessDLLFile is deprecated and will only be used by lsfg-vk if LSFG_LEGACY is set."
-  };
+          cfg.losslessDLLFile;
+      })
+      (lib.mkIf (cfg.configFile != null) {
+        environment.sessionVariables.LSFG_CONFIG = cfg.configFile;
+      })
+    ]
+  );
 }