New comment by yopito on void-packages repository

https://github.com/void-linux/void-packages/pull/26962#issuecomment-761869202

Comment:
I thinks that shiboken is calling the crossarch clang compiler, thanks to this:
```
$ cat -n srcpkgs/python3-pyside2/template
...
    34	# needed by shiboken2 runtime
    35	export CLANG_INSTALL_DIR=${XBPS_CROSS_BASE}/usr
```