these 3 derivations will be built:
  /nix/store/dfsn708vlwlaj78h7cv6bs8x00j93m3z-DockerSandboxes-darwin.tar.gz.drv
  /nix/store/zl47dqgnxr6r38pb9kc542gvlqyi7hmx-docker-sbx-0.46.0.drv
  /nix/store/ni6algwibr1s0sa0im4k3b7nrmv7b09a-check-docker-sbx.drv