these 2 derivations will be built:
  /nix/store/hn5v4m1iigk6qbnd8hqgzdl9r693zrz1-code-review-graph-2.4.0.drv
  /nix/store/3xqh8ck8n9g195mbvhcy1d5p7xsicq40-check-code-review-graph.drv