Code review comment for ~bryce/ubuntu/+source/php7.4:fix-lp1865218-mod-php-upgrade-groovy

Generally I like the new approach, to disable the old one to avoid the latter conflict.
By not existing early the new one would be enabled as intended.

A few questions:

Improved wording
"Disabling $PHP_MODULE" -> "Disabling old $PHP_MODULE"
If you insist on being perfect since this would also trigger on downgrades you can version-compare and say "old/new" but downgrades are nonono anyway, so a static "old" will do as well.

  "failed to enable $PHP_MODULE"
That should now better be something like:
  "failed to disable old $PHP_MODULE module"

In some of the SRUs backports the php version in the message needs to change at "favor of using PHP 7.4".
If you want you might use @PHP_VERSION@ to get code that is the same for all releases.