these 2 derivations will be built:
  /nix/store/8agaa6pw81w406n6d6f2ds4bx3snqhbv-amp-linux-x64.drv
  /nix/store/hz2bmnybq3l78jd0dwqnyldqx9404s79-amp-0.0.1787961677-g372167.drv