these 3 derivations will be built:
  /nix/store/8aw7lszbwp0wandbjs5y3ly1vpcg82qq-treefmt.toml.drv
  /nix/store/ylbsi78ih9vchv7rj5n8jbmyvniwzrab-treefmt.drv
  /nix/store/f3hfmqyqw55lnbxpq339sfjng1n22dp8-treefmt-check.drv