{
  pkgs ? import <nixpkgs> { },
}:
let

  recursiveMerge =
    with pkgs.lib;
    attrList:
    let
      f =
        attrPath:
        zipAttrsWith (
          n: values:
          if tail values == [ ] then
            head values
          else if all isList values then
            unique (concatLists values)
          else if all isAttrs values then
            f (attrPath ++ [ n ]) values
          else
            last values
        );
    in
    f [ ] attrList;
  callPackage = pkgs.lib.callPackageWith (recursiveMerge [
    pkgs
    packages
  ]);
  packages = {
    python3Packages = {
      ascii = callPackage ./pkgs/python3Packages/ascii.nix { };
      pyease-grpc = callPackage ./pkgs/python3Packages/pyease-grpc.nix { };
      pyexecjs = callPackage ./pkgs/python3Packages/pyexecjs.nix { };
    };

    sorremacs = callPackage ./pkgs/sorremacs { };
  };
in
{
  lib = import ./lib { inherit pkgs; };
  modules = import ./modules;
  overlays = import ./overlays;
}
// packages