these 3 derivations will be built:
  /nix/store/5b9k08ylbd3hdndz1r0nmc79iw0svd2v-treefmt.toml.drv
  /nix/store/pn8agf4wx4ibqvc5ksdhaix0pap9qiij-treefmt.drv
  /nix/store/a0gdch93jz94nl9jlv5vx3yady34v0ph-treefmt-check.drv