this derivation will be built:
  /nix/store/brg3xzjspqw64v97c4y20c3k80npv8gb-vm-test-run-pg_partman.drv
this path will be fetched (3.9 KiB download, 16.5 KiB unpacked):
  /nix/store/3qkdgd3yjc4wr66cj5qmbcskqpd71szd-nixos-test-driver-pg_partman