these 3 derivations will be built:
  /nix/store/6n4qmscyf481zba3b5499bzgmfw21cjl-treefmt.toml.drv
  /nix/store/yxpwd5r20hxv7jwh6zkf0acmn4bmwg6z-treefmt.drv
  /nix/store/812a8v77m7dyw058fxix14i2y693l410-treefmt-check.drv