these 2 derivations will be built:
  /nix/store/109pdwm02z5qkm5abp9gcg9s1himphlw-nixos-test-driver-pg_jsonschema.drv
  /nix/store/a69l7r49fhp1091z67f8lqdzpfvasqx3-vm-test-run-pg_jsonschema.drv