How do I prevent values of custom registry entries to be overwritten on reinstall of my package?
问题 My package introduces registry entries. Changes by site administrator should not be overwritten on reinstall of the package. Many ways to Rome. I chose ftw.upgrade. I like the declarative way of the upgrade step syntax. Its possible to use an upgrade directory for generic setup xml-Files like propertiestool.xml. No need to define handler python code. The upgrade works well. The admin can upgrade from control panel and in my case the new property is added. Insomma: For a new property just