these 3 derivations will be built:
  /nix/store/2bpiiw5hpc3cnxl71ky7mqhs8rdkqrkg-treefmt.toml.drv
  /nix/store/7kxmd40rq0cxr39mkcrysnqcdxajykdz-treefmt.drv
  /nix/store/m8yw8ffhh21w9x5dh000vxhlvy2wj4q6-treefmt-check.drv