disabling dead pecl extensions from pecl install

Hello all, There are pecl extensions that people should not install, like filter and sqlite, so how might we disable them from installing via the pecl command? I don't think a note on the webpage is enough. Or in the very least add a clear message here that also refers to the alternative. And whether this takes into account the local PHP version I don't know. A simple version of the idea: $ pecl install filter Failed: This deprecated PECL extension should not be used Alternative: php-src/filter Reason: Moved to core Maybe allow: $ pecl install filter --force-i-really-really-mean-it Regards, Philip