these 3 derivations will be built:
  /nix/store/dyr9kirgb93axlyqnjmdxjppdxzdmaxc-treefmt.toml.drv
  /nix/store/27pbp513v76j2mwk6lv16qm2d0vg9wzc-treefmt.drv
  /nix/store/12saq8yxr3zabsbsx2lsljj4h5c7ylsc-treefmt-check.drv