Core origin package copies

This file lists all packages that exist in core but where duplicated here because they lacked something, either temporarily, or permanently.

Core packages that could be changed (and remove the need for duplication here)

core/boost

must use core/python

core/mysql-client

must use version >= 8

Core packages that are "too much customized"

core/php-fpm

for our own configuration;
must use rsertelon/php.

core/postfix

for our own configuration;
for using mysql.