these 3 derivations will be built:
  /nix/store/f15fk16f61ncq5j8xrz52pq2fh4zlp2i-treefmt.toml.drv
  /nix/store/s1l270v1d39qqnw6qg8q8xi40wwj13j2-treefmt.drv
  /nix/store/smh8hvjhfckadpvyrb0s3ywbi5idk4z9-treefmt-check.drv