this derivation will be built:
  /nix/store/qb0slg147ydp66g7wx158g8k5cis9i4j-release-rehearsal.drv
this path will be fetched (0.0 KiB download, 2.5 KiB unpacked):
  /nix/store/b6zy1dcnrgq3hyk4fd70zg64j6amqlhz-github-api-stub.py