Package: php-xdebug Version: 2.7.0 The current php-xdebug package in sid only contains xdebug for PHP 7.3 while Debian sid still comes with PHP 7.1, PHP 7.2 and PHP 7.3
I think the package should contain xdebug for all available PHP versions or alternatively there should be multiple php-xdebug packages for all available PHP versions. It is really tough if you lose the ability to debug a project which doesn't support PHP 7.3 yet over night although PHP 7.1 and 7.2 is still available.