these 2 derivations will be built:
  /nix/store/2m0zgnnqdp0fkhqw8rinvpkz9izdfkg7-amp-linux-x64.drv
  /nix/store/3ssvfsln14xg844hklydgizwgv2ymax7-amp-0.0.1787858880-ga90ead.drv