these 3 derivations will be built:
  /nix/store/3jfhgmx453cizxlwl7lc7b3l7kfzn4md-treefmt.toml.drv
  /nix/store/mxyn6k5766da4fbyn79anc8zp02r2kyf-treefmt.drv
  /nix/store/r2y56ljrajcsqkrl9jlgh5hkgmppxgv4-treefmt-check.drv