these 2 derivations will be built:
  /nix/store/nc5bgkr43068m7f8mpqf9yphmdii73f9-niks3-tests-1.4.0.drv
  /nix/store/aj2x5kg2qkh2cnhvwrj8a36110mg18py-niks3-go-unit-tests.drv