these 2 derivations will be built:
  /nix/store/vd9aaagmdslysx0schn9qf3w08fchfc6-process-compose-dev.json.drv
  /nix/store/j4wgsqagkykmls58plk93bi6g6sbsycm-dev.drv
this path will be fetched (12.9 MiB download, 41.1 MiB unpacked):
  /nix/store/lm69y4badkbglz1brkq9ayx0494hhz4i-process-compose-1.120.0