these 2 derivations will be built:
  /nix/store/j5yqchg9ywb7dh3bajckz05ayl4yjfl1-nixos-test-driver-pg_partman.drv
  /nix/store/5kdz5aqn0w8pzc2dq1v8829fgzzfxpqq-vm-test-run-pg_partman.drv