these 2 derivations will be built:
  /nix/store/l7h5xdc8zr3s8k1cv7mx1h6yd9pk46pj-harmonia-deps-3.1.0.drv
  /nix/store/ad5qcswf8yff79wha8cr7nah2d3bld9q-harmonia-3.1.0.drv