this derivation will be built:
  /nix/store/8aghb13l7rgpm6pn7jpi22a1zqf9z1y6-vm-test-run-pg_repack.drv
this path will be fetched (4.2 KiB download, 17.0 KiB unpacked):
  /nix/store/4xakd2qxqfivax1spjmlri3bszanr937-nixos-test-driver-pg_repack