these 3 derivations will be built:
  /nix/store/p3ip4bg80nmjwq2wnipnamvvn0m7ahjr-source.drv
  /nix/store/b3v0r7wdds4ryp54dqxsiaywpg5s41ac-harmonia-deps-3.2.0.drv
  /nix/store/95mb2yzxysy82r05rby4v2p2vjf7l15w-harmonia-3.2.0.drv