these 2 derivations will be built:
  /nix/store/xlc0vznyrjj8aqk9hwz040gc7w1qbpx5-amp-linux-x64.drv
  /nix/store/d4f7mn47brcp1m8czb3dqd0f1dg2s2rd-amp-0.0.1787500903-g384b39.drv