let
  lib = import <nixpkgs/lib>;
  transform = super:
    if builtins.isAttrs super
    then if lib.hasAttrByPath ["meta" "position" ] super
    then derivation {
      name = super.meta.position;
      builder = "/bin/sh";
      system = builtins.currentSystem;
    } else lib.mapAttrs (_: v: transform v) super
    else super;

  brrrrrrr = transform (import ./. {});
in brrrrrrr