these 3 derivations will be built:
  /nix/store/k3q8g7jagfaafr5hhrmq8hh97zln6x00-treefmt.toml.drv
  /nix/store/jhbmwhfb8fw3drr1fps0djbn9i2i8hqm-treefmt.drv
  /nix/store/b9l28blqbimw08z02iyz7zdc5ps6gvmq-treefmt-check.drv