these 3 derivations will be built:
  /nix/store/gk2nj94khhwfac41h4f4i2jqzciyy409-treefmt.toml.drv
  /nix/store/ngrs8z63m25nrlrq81x5h0f23ljypq0i-treefmt.drv
  /nix/store/g27jdf8gkxifzkg7pfr4hq000ch9hhcw-treefmt-check.drv