these 3 derivations will be built:
  /nix/store/6raxw7j5bgdminpnfz9vgmycy1y57j0q-treefmt.toml.drv
  /nix/store/jhxmf20rq41ckglyx6ck4dmrab28g4m9-treefmt.drv
  /nix/store/7zgckgm9bnxf3lyqcanlvagszfqfi1za-treefmt-check.drv