these 2 derivations will be built:
  /nix/store/p2isap30vqahkgdgkf50s1fbk37vf7kn-harmonia-deps-3.1.0.drv
  /nix/store/k0nqsz3x4mayjw53bfgcjlwsmgrykwhv-harmonia-3.1.0.drv