this derivation will be built:
  /nix/store/9zkqd7c39bmq6sb4ml3z7c5a5qqkvq1f-postgresql-15.19-src-15.19.drv
this path will be fetched (2.2 KiB download, 8.0 KiB unpacked):
  /nix/store/vd30jclaz1dn7j6y04n3z32jpfwvjfvp-bzip2-1.0.8-dev