{
  perSystem =
    { pkgs, ... }:
    let
      inherit (pkgs) system lib;
      sources = import ../../../npins;
      inherit (import "${sources.flake-inputs}/lib.nix") import-flake;
      inputs = lib.mapAttrs (_: import-flake) sources;
      inherit (inputs) proxmox-nixos;
      overlay = proxmox-nixos.overlays.${system};
      pkgs' = pkgs.extend overlay;
    in
    {
      checks.proxmox-basic = pkgs'.testers.runNixOSTest {
        imports = [
          ./proxmoxTest.nix
        ];
        _module.args = {
          inherit sources inputs;
        };
      };
    };
}