these 3 derivations will be built:
  /nix/store/2v8qpmr3jhr1pma46w168scy55ipdw0w-treefmt.toml.drv
  /nix/store/rv0b2bv4bjbfckgfc8fndlrj3vdab3d5-treefmt.drv
  /nix/store/zbw7skz6n8pvjfdjwl7f827zpxbhs659-treefmt-check.drv