nixos/flake/overlays.nix

{
  self,
  inputs,
  lib,
  rootPath,
  ...
}: let
  inherit (self) outputs;
  importWithArgs = lib.flip import {inherit inputs outputs;};
in {
  flake.overlays = with lib;
    pipe
    [
      "modifications"
      "additions"
    ]
    [(flip genAttrs (name: importWithArgs (rootPath + "/overlays/${name}")))];
}