these 4 derivations will be built:
  /nix/store/vzapsm9x2fbiilaaa29x7gf0y50nmxdn-source.drv
  /nix/store/40wj9m8pjdgp7a9d6q0p4hdwcrbya5gj-cc-switch-cli-5.10.3-vendor-staging.drv
  /nix/store/dzbsbz0w2v1qvr8dm85knpsavsblqj0k-cc-switch-cli-5.10.3-vendor.drv
  /nix/store/a0glifd0dxf9h1zy3g5fyz21c4qb2n19-cc-switch-cli-5.10.3.drv