these 3 derivations will be built:
  /nix/store/17zcb8xgfyga7v7ypbs34dk2yiwz0208-DockerSandboxes-darwin.tar.gz.drv
  /nix/store/48r3b8pldwwvc15w8gf78djraxq05rn7-docker-sbx-0.51.0.drv
  /nix/store/2zsyycxdddb6c4y4cz3z1ghix9rjs9jq-check-docker-sbx.drv