inputs: simple-pkgs: hyper: let
  args = {
    system = hyper.system;
    config = {
      allowUnfreePredicate = (import ./allowed.nix simple-pkgs).predicate;
      cudaSupport = hyper.nvidia.enable;
      cudaForwardCompat = hyper.nvidia.enable;
    };
  };
  overlays = [(final: prev: {
    unstable = import inputs.nixpkgs-unstable args;
    latest   = import inputs.nixpkgs-latest args;
    pkgs-version = hyper.main-pkgs-version;
  })] ++ (if hyper.isServer then [
    inputs.copyparty.overlays.default
  ] else []);
in if !hyper.isNOD then 
  (import inputs.nixpkgs (args // { inherit overlays; }))
else (
  (import inputs.nixpkgs (args // { inherit overlays; })) // # normal as base 
  (import inputs.nixpkgs24 (args // { # overwrite with old versions
    overlays = [(final: prev: {
      pkgs-version = "24.05";
    })];
  }))
)