these 3 derivations will be built:
  /nix/store/p89d7fcccnqa7b1f20xjjikq9xzn1xdi-treefmt.toml.drv
  /nix/store/l1k2hvv1mnwsw3x6gm6fripsjbwqa0l9-treefmt.drv
  /nix/store/6fnila6zl1zhiam28mb7q6ijwhv9jf8g-treefmt-check.drv