this derivation will be built:
  /nix/store/sj0vka8wqhpks8kgmdxgrlhqgvdw3xx2-vm-test-run-postgis.drv
this path will be fetched (4.0 KiB download, 16.6 KiB unpacked):
  /nix/store/kgdd3n95gy8bpqk55l1l7ig30pzfrhqw-nixos-test-driver-postgis