{
  pkgs,
  nixLib,
  pkgsUnstable,
}: let
  inherit (pkgs) lib;

  warnMergeMessage = "the ./pkgs/by-name set";
  wMM = warnMergeMessage;
  callPackage =
    lib.callPackageWith
    (nixLib.warnMerge
      pkgs
      (nixLib.warnMerge vhackPkgs {inherit nixLib pkgsUnstable;} wMM)
      wMM);

  vhackPkgs = nixLib.mkByName {
    baseDirectory = ./by-name;
    fileName = "package.nix";
    finalizeFunction = name: value: callPackage value {};
  };
in
  vhackPkgs