these 3 derivations will be built:
  /nix/store/9wvkcpi2pnc9pbrrwaycdfvvcmqgxg0g-source.drv
  /nix/store/nj98gsssra5cjkm70b7idjgnis59241b-harmonia-deps-3.2.0.drv
  /nix/store/0ri226i35z90vgv44s6ppahyjcn9pkdq-harmonia-3.2.0.drv