I have very limited knowledge about building in general, but first attempt was somewhat successful, using this as guidance.
- How to reproduce current release (8.0.6) featured on torproject.org frontpage?
make release-linux-x86_64, but this gave me "tor-browser-linux64-8.5a9".
- How to build only en_US? Are there some switches/parameters or config files that can be tweaked?