Update FredOS-Gaming.nix

hosts/FredOS-Gaming.nix

@@ -28,14 +28,18 @@
     # Enable AMD GPU overdrive for overclocking/undervolting
     boot.kernelParams = [ "amdgpu.ppfeaturemask=0xffffffff" "acpi_osi=\"!Windows 2015\"" ];
     
-    # Session variables to make LSFG-VK work properly.
+    # Session variables
     environment.sessionVariables = {
       VK_ADD_LAYER_PATH = "${pkgs.lsfg-vk}/share/vulkan/implicit_layer.d";
+      # Force the layer to be visible everywhere
+      VK_INSTANCE_LAYERS = "VK_LAYER_LS_frame_generation";
     };
     
-    # Create symlink for lsfg-vk layer - ADD SYSTEM-WIDE LOCATION
+    # Create symlinks in EVERY possible location
     systemd.tmpfiles.rules = [
       "L+ /usr/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json - - - - ${pkgs.lsfg-vk}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json"
+      "d /usr/lib/x86_64-linux-gnu 0755 root root -"
+      "L+ /usr/lib/x86_64-linux-gnu/liblsfg-vk.so - - - - ${pkgs.lsfg-vk}/lib/liblsfg-vk.so"
     ];
     
     systemd.user.tmpfiles.rules = [
@@ -52,7 +56,11 @@
           adwaita-icon-theme
           lsfg-vk
         ];
-        extraLibraries = pkgs: [ pkgs.lsfg-vk ];  # ADD THIS
+        extraLibraries = pkgs: [ pkgs.lsfg-vk ];
+        extraProfile = ''
+          export VK_ADD_LAYER_PATH=${pkgs.lsfg-vk}/share/vulkan/implicit_layer.d:$VK_ADD_LAYER_PATH
+          export LD_LIBRARY_PATH=${pkgs.lsfg-vk}/lib:$LD_LIBRARY_PATH
+        '';
       };
     };
     
@@ -73,3 +81,8 @@
     };
   };
 }
+```
+
+**Steam Launch Options:**
+```
+mangohud %command%