these 2 derivations will be built:
  /nix/store/168ka0ahf0db9zpp5g6s2x5yzy1aljzy-harmonia-deps-3.1.0.drv
  /nix/store/s2jcqpwkv58vyc672n66gy9wrfp7dw9a-harmonia-3.1.0.drv