these 3 derivations will be built:
  /nix/store/bisw77ps04cbm7bzlsr2d46ngimjzxrg-treefmt.toml.drv
  /nix/store/2d9pv1anm0zkdbn7kkrhwdm7r275s41c-treefmt.drv
  /nix/store/10pas169akpm0s4g7n6p2nj5jq0wjpy2-treefmt-check.drv