these 3 derivations will be built:
  /nix/store/m1q8bqwmzj7ni0jadidbhfr2nk7varnx-treefmt.toml.drv
  /nix/store/c6dwr463liiawy6ni3cgs4kgb46v29l9-treefmt.drv
  /nix/store/7jmfcv6bnfdxzx7b9rd2nrcz0m0yscr1-treefmt-check.drv