{
  systemsAttributes,
  nixpkgs,
  self,
}:
{
  nixpkgsAllowUnfree ? false,
  nixpkgsCudaSupport ? false,
  nixpkgsAllowUnfreePredicate ? [ ],
  nixpkgsExtraConfig ? { },
}:
(systemsAttributes (
  system:
  import nixpkgs {
    inherit system;

    overlays = import "${self}/lib/overlays.nix" { inherit self; };

    config = {
      allowUnfree = nixpkgsAllowUnfree;
      cudaSupport = nixpkgsCudaSupport;
      allowUnfreePredicate = nixpkgsAllowUnfreePredicate;
    } // nixpkgsExtraConfig;
  }
))