Building Arch Linux packages

HI! I'm trying to build mostly Python modules for Arch Linux: https://build.opensuse.org/project/show/home:stroeder:arch-iam This works as long the packages does not have a dependency on another module built in this local repo. With such a dependency build fails with a message like this: PermissionError: [Errno 13] Permission denied: '/usr/lib/python3.10/site-packages/ldap0-1.4.8-py3.10.egg-info/PKG-INFO' If I remove the local repo dependency such a package builds but without the correct dependency. Any clue what's going on? Anything I have to add to the project config to make it work? Many thanks in advance. Ciao, Michael.