diff --git a/default.nix b/default.nix
index 124b747..07fa9d5 100644
--- a/default.nix
+++ b/default.nix
@@ -6,6 +6,7 @@
   vulkan-headers,
   vulkan-loader,
   llvmPackages,
+  spirv-headers,
   libX11,
   libXrandr,
   libXinerama,
@@ -20,13 +21,13 @@
 
 llvmPackages.stdenv.mkDerivation {
   pname = "lsfg-vk";
-  version = "unstable-2025-07-20-e67fcd3";
+  version = "unstable-2025-07-19-dd5190a";
 
   src = fetchFromGitHub {
     owner = "PancakeTAS";
     repo = "lsfg-vk";
-    rev = "e67fcd3dd832c9d177ad2be780e5dd0e47810bdf";
-    hash = "sha256-c0anP3lWJ2GcjJNGIHcY/sS86AS1tFk0t7vXbaEGTQg=";
+    rev = "dd5190aa680a7543143e724a100bd5d6e9898dd7";
+    hash = "sha256-2WrUtjUG8l3tSElDYfhvi4lrFUG1Oh5M7DAEX2mFh5s=";
     fetchSubmodules = true;
   };
 
@@ -48,6 +49,7 @@ llvmPackages.stdenv.mkDerivation {
   buildInputs = [
     vulkan-headers
     vulkan-loader
+    spirv-headers
     libX11
     libXrandr
     libXinerama
diff --git a/module.nix b/module.nix
index 19bc424..92ab300 100644
--- a/module.nix
+++ b/module.nix
@@ -19,7 +19,9 @@ in
         default = lsfg-vk;
       };
 
-      losslessDLLFile = lib.mkOption
+      losslessDLLFile =
+        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;
@@ -43,23 +45,15 @@ in
     };
   };
 
-  config = lib.mkIf cfg.enable (
-    lib.mkMerge [
-      {
-        environment.systemPackages = [ cfg.package ];
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
 
-        # Installs the Vulkan implicit layer system-wide
-        environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source =
-          "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
-      }
-      (lib.mkIf (cfg.losslessDLLFile != null) {
-        environment.sessionVariables.LSFG_DLL_PATH =
-          lib.warn "losslessDLLFile is deprecated and will only be used by lsfg-vk if LSFG_LEGACY is set."
-          cfg.losslessDLLFile;
-      })
-      (lib.mkIf (cfg.configFile != null) {
-        environment.sessionVariables.LSFG_CONFIG = cfg.configFile;
-      })
-    ]
-  );
+    # Installs the Vulkan implicit layer system-wide
+    environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source =
+      "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
+
+    environment.sessionVariables.LSFG_DLL_PATH = lib.mkIf (cfg.losslessDLLFile != null) cfg.losslessDLLFile;
+
+    environment.sessionVariables.LSFG_CONFIG = lib.mkIf (cfg.configFile != null) cfg.configFile;
+  };
 }