these 3 derivations will be built:
  /nix/store/s3ajxxpg9b8w895g8k6xbp87cm3hi6cq-source.drv
  /nix/store/4qszvcf8x04ia356dgqxrxd2zkwdab9b-tincd-deps-0.1.0.drv
  /nix/store/i68fpwirwn33b4x1y8wjcyyyrymwcb18-tincd-test-0.1.0.drv