Switching to flakes and adding home-manager

hardware/x1-extreme-gen4.nix

@@ -1,11 +1,31 @@
 { config, ... }:
 
 {
-  imports =
-    [
-      <nixos-hardware/lenovo/thinkpad/x1-extreme/gen4>
-    ];
+  # Optimisation
 
+  # nixpkgs.hostPlatform = {
+  #   gcc.arch = "tigerlake";
+  #   gcc.tune = "tigerlake";
+  #   system = "x86_64-linux";
+  # };
+
+  nix.settings.system-features = [ "gccarch-tigerlake" "nixos-test" "benchmark" "big-parallel" "kvm" ];
+
+  # Increasing the limit of files to help with compilation
+  security.pam.loginLimits = [{
+    domain = "*";
+    type = "soft";
+    item = "nofile";
+    value = "8192";
+  }];
+
+  # Disabling failing test
+  # nixpkgs.overlays = [ (final: prev: {
+  #   orc = prev.orc.overrideAttrs (_: { doCheck = false; });
+  # }) ];
+
+  # NVidia
+  
   services.xserver.videoDrivers = [ "nvidia" ];
 
   hardware.opengl = {
@@ -28,4 +48,7 @@
     # Optionally, you may need to select the appropriate driver version for your specific GPU
     package = config.boot.kernelPackages.nvidiaPackages.stable;
   };
-}
+
+  # For containers
+  virtualisation.containers.cdi.dynamic.nvidia.enable = true;
+}