these 2 derivations will be built:
  /nix/store/naa7l4hm8f7pgqm9jiwd4cl8s66n8igs-amp-linux-x64.drv
  /nix/store/sj1hhzvppklqy3n6xgvi51hq7ip0jzjk-amp-0.0.1788249635-gcc0420.drv