{ pkgs, ... }: {
  nix = {
    # TODO remove once 24.05 is released
    package = pkgs.nixVersions.unstable;
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      auto-optimise-store = true;
    };
  };

  nixpkgs.overlays = [
    (self: super: {
      mfcl3750cdwlpr = (super.callPackage ../overlays/mfcl3750cdw.nix { }).driver;
      mfcl3750cdwcupswrapper = (super.callPackage ../overlays/mfcl3750cdw.nix { }).cupswrapper;
    })
  ];

  # allow EOL version electron for obsidian
  # TODO: remove
  nixpkgs.config.permittedInsecurePackages = [
    "electron-25.9.0"
  ];

  system.stateVersion = "23.05";
}