add allow unfree environment var

modules/hardware/nvidia.nix

@@ -32,7 +32,7 @@ in
       # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
       # Only available from driver 515.43.04+
       # Currently alpha-quality/buggy, so false is currently the recommended setting.
-      open = false;
+      open = true;
       # Enable the Nvidia settings menu,
         # accessible via `nvidia-settings`.
       nvidiaSettings = true;

modules/misc/hook.sh

@@ -10,6 +10,7 @@ STATE_NAME="$3"
 GPU_PCI="pci_0000_2b_00_0"
 GPU_AUDIO_PCI="pci_0000_2b_00_1"
 #GPU_MODULES="nvidia_uvm nvidia_drm nvidia_modeset nvidia"
+set -x
 
 if [[ ! "$GUEST_NAME" =~ ^gpu_passthrough ]]; then
     exit 0
@@ -22,12 +23,14 @@ if [ "$HOOK_NAME" == "prepare" ] && [ "$STATE_NAME" == "begin" ]; then
     echo 0 > /sys/class/vtconsole/vtcon0/bind
     echo 0 > /sys/class/vtconsole/vtcon1/bind
     echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind
+    
+    sleep 2
 
     # Unload kernel module
-    modprobe -r nvidia_uvm
-    modprobe -r nvidia_drm
-    modprobe -r nvidia_modeset
-    modprobe -r nvidia
+    rmmod nvidia_uvm
+    rmmod nvidia_drm
+    rmmod nvidia_modeset
+    rmmod nvidia
 
     # Detach GPU from host
     virsh nodedev-detach $GPU_PCI
@@ -37,13 +40,12 @@ if [ "$HOOK_NAME" == "prepare" ] && [ "$STATE_NAME" == "begin" ]; then
     modprobe vfio-pci
 elif [ "$HOOK_NAME" == "release" ] && [ "$STATE_NAME" == "end" ]; then
     # Unload VFIO kernel modules
-    modprobe -r vfio-pci
+    #modprobe -r vfio-pci
 
     # Reattach GPU TO host
     virsh nodedev-reattach $GPU_PCI
     virsh nodedev-reattach $GPU_AUDIO_PCI
 
-    echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
 
     # Load NVIDIA kernel modules
     modprobe nvidia
@@ -53,6 +55,7 @@ elif [ "$HOOK_NAME" == "release" ] && [ "$STATE_NAME" == "end" ]; then
 
     echo 1 > /sys/class/vtconsole/vtcon0/bind
     echo 1 > /sys/class/vtconsole/vtcon1/bind
+    echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
     # Start DM
     systemctl start display-manager.service
 fi

modules/nix/settings.nix

@@ -13,6 +13,9 @@ in
     nix.settings.experimental-features = [ "nix-command" "flakes" ];
     nix.registry.nixpkgs.flake = pkgsVersion;
     nix.nixPath = ["nixpkgs=flake:nixpkgs"];
-    home-manager.users.${config.mainUser.name}.home.sessionVariables.NIX_PATH = "nixpkgs=flake:nixpkgs$\{NIX_PATH:+:$NIX_PATH}";
+    home-manager.users.${config.mainUser.name}.home.sessionVariables = {
+      NIX_PATH = "nixpkgs=flake:nixpkgs$\{NIX_PATH:+:$NIX_PATH}";
+      NIXPKGS_ALLOW_UNFREE = "1";
+    };
   };
 }