mod_proxy_uwsgi is being transferred from uWSGI to Apache starting with httpd 2.4.30: https://github.com/unbit/uwsgi/issues/1636 www-servers/apache-2.4.32 automatically builds mod_proxy_uwsgi if the dependencies are installed, which collides with www-servers/uwsgi-2.0.17[apache2].
Thanks a lot Thomas, I've removed the build of apache2 modules on latest ebuild and added a warning