these 3 derivations will be built:
  /nix/store/9wvkcpi2pnc9pbrrwaycdfvvcmqgxg0g-source.drv
  /nix/store/nj98gsssra5cjkm70b7idjgnis59241b-harmonia-deps-3.2.0.drv
  /nix/store/xwj8wf20sxzdii4nzmy5nk6pni67hcl4-harmonia-3.2.0.drv