these 3 derivations will be built:
  /nix/store/cmdcy92s0wsj96ajzib6gm4c5k6w3wq0-treefmt.toml.drv
  /nix/store/slj916ym309gkdaffla5dab3b0ifs75x-treefmt.drv
  /nix/store/n093nx8b3jwy9rk8h96ndvmi7yzkca65-treefmt-check.drv