these 3 derivations will be built:
  /nix/store/j16crn4h019xz88srqv0f9wp80m01sy0-treefmt.toml.drv
  /nix/store/p7hsv8mgfilxqzp2pb5b2kq50g9lkclw-treefmt.drv
  /nix/store/vd4jsvlwnawwhzffma4zcq3f0y10xz5j-treefmt-check.drv