these 3 derivations will be built:
  /nix/store/lxlm5pch5kyhcm0iwmff4jirrwbdz172-source.drv
  /nix/store/9n9zcrgajs1kvwwxrji46xb63jlg5cs0-harmonia-deps-3.3.0.drv
  /nix/store/z9wdzlbgd19n0cpr1n92xwhna0bfk9d8-harmonia-clippy-3.3.0.drv