this derivation will be built:
  /nix/store/l4s3a0wh4pd786xnxz775kayv177r4dk-postgresql-15.19-src-15.19.drv
this path will be fetched (2.2 KiB download, 8.0 KiB unpacked):
  /nix/store/1mhb7ani3xdqcfrmnclxad5ydijscy4i-bzip2-1.0.8-dev