dnf system-upgrade spits: Problem 3: package system-config-services-0.111.4-2.fc24.noarch requires python-slip >= 0.1.11, but none of the providers can be installed - python2-slip-0.6.4-12.fc29.noarch does not belong to a distupgrade repository - problem with installed package system-config-services-0.111.4-2.fc24.noarch This is a system that has been upgraded several times with dnf system-upgrade before (so 100% supported configuration). I don't use system-config-services, it's only installed because Fedora installed it previously!
I've noticed new fedora-obsolete-packages fixing other upgrade errors I've seen, so I guess these belong there as well?
system-config-services was retired in Fedora 25 but never obsoleted. It causes upgrade issues (29 -> 30).
fedora-obsolete-packages-30-43 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-2213140151
fedora-obsolete-packages-30-43 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-2213140151
fedora-obsolete-packages-30-43 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.