generic-linux-gpu: add module

modules/targets/generic-linux/gpu/setup/default.nix

@@ -0,0 +1,30 @@
+{
+  lib,
+  stdenv,
+  nixStateDirectory,
+  nonNixosGpuEnv,
+}:
+
+stdenv.mkDerivation {
+  name = "non-nixos-gpu";
+
+  meta = {
+    description = "GPU driver setup for Nix on non-NixOS Linux systems";
+    homepage = "https://github.com/exzombie/non-nixos-gpu";
+    license = lib.licenses.mit;
+    mainProgram = "non-nixos-gpu-setup";
+  };
+
+  src = ./.;
+  patchPhase = ''
+    substituteInPlace non-nixos-gpu* \
+      --replace '@@resources@@' "$out/resources" \
+      --replace '@@statedir@@' '${nixStateDirectory}' \
+      --replace '@@env@@' "${nonNixosGpuEnv}"
+  '';
+  installPhase = ''
+    mkdir -p $out/{bin,resources}
+    cp non-nixos-gpu-setup $out/bin
+    cp non-nixos-gpu.service $out/resources
+  '';
+}

modules/targets/generic-linux/gpu/setup/non-nixos-gpu-setup

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -e
+
+# Install the systemd service file and ensure that the store path won't be
+# garbage-collected as long as it's installed.
+unit_path=/etc/systemd/system/non-nixos-gpu.service
+ln -sf @@resources@@/non-nixos-gpu.service "$unit_path"
+ln -sf "$unit_path" "@@statedir@@"/gcroots/non-nixos-gpu.service
+
+systemctl daemon-reload
+systemctl enable non-nixos-gpu.service
+systemctl restart non-nixos-gpu.service

modules/targets/generic-linux/gpu/setup/non-nixos-gpu.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=GPU driver setup for Nix on non-NixOS Linux systems
+
+[Install]
+WantedBy=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=ln -nsf @@env@@ /run/opengl-driver
+RemainAfterExit=yes