try readding the other packages with the system being in a working state

systems/x86_64-linux/drivebystation-nix/default.nix

@@ -83,14 +83,14 @@ in
         pkgs.my-namespace.udev-steelseries
         pkgs.my-namespace.hello
 
-        # pkgs.nvtopPackages.nvidia
+        pkgs.nvtopPackages.nvidia
-        # pkgs.mesa
+        pkgs.mesa
-        # pkgs.vulkan-loader
+        pkgs.vulkan-loader
-        # pkgs.vulkan-validation-layers
+        pkgs.vulkan-validation-layers
-        # pkgs.vulkan-extension-layer
+        pkgs.vulkan-extension-layer
-        # pkgs.vulkan-tools
+        pkgs.vulkan-tools
-        # pkgs.libva
+        pkgs.libva
-        # pkgs.libva-utils
+        pkgs.libva-utils
         #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
         #  wget
       ]

systems/x86_64-linux/drivebystation-nix/nvidia.nix

@@ -28,9 +28,7 @@
     "nvidia" 
     "nvidia-drm"
     "nvidia-modeset"
-    # "nvidia-uvm"
+    "nvidia-uvm"
-    # "nvidia_modeset"
-    # "nvidia_uvm"
     "i2c-nvidia_gpu"
     ];
   #boot.initrd.kernelModules = [ "nvidia" ];