this derivation will be built:
  /nix/store/6vcws15aghq2nhad4p6826qlpizvcy82-gascity-1.4.1.drv
this path will be fetched (6.2 KiB download, 53.6 KiB unpacked):
  /nix/store/081ykjazs2bzjfw37ldjhzgf98m6mfkg-flock-0.4.0