these 3 derivations will be built:
  /nix/store/3viijgi2h61wbxgvs92hpmkgl850wshc-treefmt.toml.drv
  /nix/store/pqyznd35wrpqk2k90dpnc3c9gdryj9xm-treefmt.drv
  /nix/store/w80g9h598lmjzw93yjqkkbyi9zvs7dkc-treefmt-check.drv