New comment by goleo108 on void-packages repository

https://github.com/void-linux/void-packages/issues/23639#issuecomment-660670504

Comment:
the problem is the install script doesn't change PLAN9 variable hardcoded to `/usr/local/plan9` in binaries in case you don't set PLAN9 environment variables, which in my case led to failing to start rc as user shell thanks to #23640

both gcc and clang do build astronomicly slow, so I simply `# ln -s /usr/lib/plan9 /usr/local/` just to save my time