chn: xserver drivers to per host basis

hosts/tuxcomp/nvidia.nix

@@ -0,0 +1,20 @@
+{ lib, ... }:
+
+{
+  services.xserver.videoDrivers = lib.mkForce [
+    "nvidia"
+    "amdgpu"
+  ];
+
+  hardware.nvidia.prime = {
+    reverseSync.enable = true;
+    amdgpuBusId = "PCI:6@0:0:0";
+    nvidiaBusId = "PCI:1@0:0:0";
+  };
+
+  hardware.nvidia = {
+    open = true;
+    modesetting.enable = true;
+    nvidiaSettings = true;
+  };
+}