this derivation will be built:
  /nix/store/c9znkq4b5rsaqz0jlfcc5gs6c3chw7cx-vm-test-run-pg_partman.drv
this path will be fetched (3.9 KiB download, 16.5 KiB unpacked):
  /nix/store/2s45nwhz7vmzln3xski6g3qminjjlsic-nixos-test-driver-pg_partman