From ed44b78a6e1bda3ef87c37bc4b970bdb1152bcb8 Mon Sep 17 00:00:00 2001
From: Mohammad Rafiq <rafiq@rrv.sh>
Date: Mon, 7 Jul 2025 11:14:07 +0800
Subject: [PATCH 1/3] feat(debug): enable flake-parts debug

---
 nix/debug.nix | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 nix/debug.nix

diff --git a/nix/debug.nix b/nix/debug.nix
new file mode 100644
index 0000000..38e2cb3
--- /dev/null
+++ b/nix/debug.nix
@@ -0,0 +1,3 @@
+{
+  debug = true;
+}

From 63f0ba11ec62b21ec59098003aeac56918bc4434 Mon Sep 17 00:00:00 2001
From: Mohammad Rafiq <rafiq@rrv.sh>
Date: Mon, 7 Jul 2025 11:15:11 +0800
Subject: [PATCH 2/3] feat(nix): add unfree-packages module

---
 nix/modules/unfree-packages.nix | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 nix/modules/unfree-packages.nix

diff --git a/nix/modules/unfree-packages.nix b/nix/modules/unfree-packages.nix
new file mode 100644
index 0000000..498095e
--- /dev/null
+++ b/nix/modules/unfree-packages.nix
@@ -0,0 +1,16 @@
+{ lib, config, ... }:
+let
+  inherit (builtins) elem;
+  inherit (lib) mkOption getName;
+  inherit (lib.types) listOf str;
+  predicate = pkg: elem (getName pkg) config.allowedUnfreePackages;
+in
+{
+  options.allowedUnfreePackages = mkOption {
+    type = listOf str;
+    default = [ ];
+  };
+  config.flake.modules.nixos.default = {
+    nixpkgs.config.allowUnfreePredicate = predicate;
+  };
+}

From b91982601fcb18fc4d8913089ea0d03797815527 Mon Sep 17 00:00:00 2001
From: Mohammad Rafiq <rafiq@rrv.sh>
Date: Mon, 7 Jul 2025 11:18:14 +0800
Subject: [PATCH 3/3] feat(nixos): add gpu module for nvidia config

---
 nix/modules/machine/gpu.nix | 41 +++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 nix/modules/machine/gpu.nix

diff --git a/nix/modules/machine/gpu.nix b/nix/modules/machine/gpu.nix
new file mode 100644
index 0000000..00c56cd
--- /dev/null
+++ b/nix/modules/machine/gpu.nix
@@ -0,0 +1,41 @@
+{ config, ... }:
+let
+  cfg = config.flake;
+in
+{
+  allowedUnfreePackages = [
+    "nvidia-x11"
+    "nvidia-settings"
+  ];
+  flake.modules.nixos.default =
+    {
+      config,
+      pkgs,
+      hostName,
+      ...
+    }:
+    let
+      gpu = cfg.manifest.hosts.nixos.${hostName}.machine.gpu or "";
+    in
+    if gpu == "nvidia" then
+      {
+        hardware = {
+          graphics.enable = true;
+          graphics.extraPackages = [ pkgs.nvidia-vaapi-driver ];
+          nvidia.open = true;
+          nvidia.package = config.boot.kernelPackages.nvidiaPackages.latest;
+        };
+        services.xserver.videoDrivers = [ "nvidia" ];
+        environment.variables = {
+          LIBVA_DRIVER_NAME = "nvidia";
+          __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+          NVD_BACKEND = "direct";
+        };
+        nix.settings.substituters = [ "https://cuda-maintainers.cachix.org" ];
+        nix.settings.trusted-public-keys = [
+          "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
+        ];
+      }
+    else
+      { };
+}