these 3 derivations will be built:
  /nix/store/3viijgi2h61wbxgvs92hpmkgl850wshc-treefmt.toml.drv
  /nix/store/pqyznd35wrpqk2k90dpnc3c9gdryj9xm-treefmt.drv
  /nix/store/zg6g875a4pp6gx0wlhhbxy5vcl46m8yp-treefmt-check.drv