these 3 derivations will be built:
  /nix/store/mwdppqbliyhb62rb9wpnrr0l4sgpdrax-treefmt.toml.drv
  /nix/store/by9ph7hx87fxym76vqflpdpgk8wgzlkq-treefmt.drv
  /nix/store/54d049q29lmxbfc8932015x4c54jfg1v-treefmt-check.drv