module mysql // Need to check if `mysqlclient` is not there and use `mariadb` as alternative // because newer system doesn't support mysql 8.0 as default. $if $pkgconfig('mysqlclient') { #pkgconfig mysqlclient #include # Please install the libmysqlclient-dev development headers } $else { #pkgconfig mariadb #include # Please install the libmariadb-dev development headers }