these 3 derivations will be built:
  /nix/store/irv238xhykcnjm0fy1zjgplk71dgii39-treefmt.toml.drv
  /nix/store/ik8iwqyfvrsnccgd1dmfsc12pbsin8xz-treefmt.drv
  /nix/store/q1wdyyyswvdzj4hkf259dqf4ygi3m90w-treefmt-check.drv