these 3 derivations will be built:
  /nix/store/hicviwjw7m2f8bhwwn7xzin0dk48hicv-treefmt.toml.drv
  /nix/store/497q83kzh2pj97faks159ldclj9v7zk9-treefmt.drv
  /nix/store/hwazxxxrns0yfgwskcm9ynh71z7ccm7m-treefmt-check.drv