these 3 derivations will be built:
  /nix/store/fjix2a6nr2573gd2266g8i1hlm7zxmk6-treefmt.toml.drv
  /nix/store/qqjg0qq0bac93zsa3vrirv1j6pmw1da7-treefmt.drv
  /nix/store/cq4ivrkc2srj9iyl3d84s0lmr96i78h8-treefmt-check.drv
this path will be fetched (1.1 MiB download, 3.5 MiB unpacked):
  /nix/store/cgaldnsz09mg3ny3wr5rjwskzs7qixx0-nixpkgs-fmt-1.3.0