this derivation will be built:
  /nix/store/dcnbvax9nbbhlbkmzrb30l00k42a7qvg-postgresql-17.11-src-17.11.drv
this path will be fetched (2.2 KiB download, 8.0 KiB unpacked):
  /nix/store/vd30jclaz1dn7j6y04n3z32jpfwvjfvp-bzip2-1.0.8-dev