New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/30702#issuecomment-833587060

Comment:
- how faster do builds get?
- does it work for cooperation between different packages using the same crate?
- I'm against the need to install the package manually, it should be automated in some way (I suggested a solution above)

And it can't be merged if it's waiting on another PR.