New comment by pullmoll on void-packages repository

https://github.com/void-linux/void-packages/pull/25724#issuecomment-711523642

Comment:
@sgn That would be better because the cache data format also changed.
Using the same cache directory for a `chroot-ccache-3.x` and `ccache` >= 4.0 would work but not re-use the cache data.
If you can come up with a `chroot-cmake` that would be great.