{
  inputs,
  lib,
  config,
  ...
}:
{
  config = lib.mkIf config.osbmModules.nixSettings.enable {
    # Allow unfree packages
    nixpkgs = {
      config = {
        allowUnfreePredicate = pkg:
          builtins.elem (lib.getName pkg) [
            "vscode"
            "discord"
            "obsidian"
            "steam"
            "steam-unwrapped"
            "open-webui"
            "vscode-extension-github-copilot"
            "spotify"
            "cursor"
            # NVIDIA related
            "libcurand"
            "nvidia-x11"
            "cuda_cudart"
            "cuda_nvcc"
            "cuda_cccl"
            "libcublas"
            "libcusparse"
            "libnvjitlink"
            "libcufft"
            "cudnn"
            "cuda_nvrtc"
            "libnpp"
            "nvidia-settings"
            # blender with cuda is not foss?!?
            "blender"
        ];
        allowAliases = false
      };

    # Enable Nix flakes
    nix = {
      settings = {
        experimental-features = [
          "nix-command"
          "flakes"
        ];
        trusted-users = [
          "root"
          config.osbmModules.defaultUser
        ];
      };

      optimise.automatic = true;

      channel.enable = false;

      registry = lib.mkIf (inputs ? self && inputs ? nixpkgs) {
        self.flake = inputs.self;
        nixpkgs.flake = inputs.nixpkgs;
        osbm-nvim = lib.mkIf (inputs ? osbm-nvim) {
          flake = inputs.osbm-nvim;
        };
      };
    };

    system.configurationRevision = inputs.self.rev or "dirty";
  };
}