Can't upgrade to 9.1 due to KDE compabibility issue

Here are the errors:

$ sudo dnf update
Last metadata expiration check: 1:35:36 ago on Thu 17 Nov 2022 05:52:53 AM PST.
Error: 
 Problem 1: cannot install both libdav1d-1.0.0-2.el9.x86_64 and libdav1d-0.9.2-1.el9.x86_64
  - package libavif-0.10.1-3.el9.x86_64 requires libdav1d.so.5()(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package libdav1d-0.9.2-1.el9.x86_64
  - cannot install the best update candidate for package libavif-0.10.1-3.el9.x86_64
 Problem 2: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package kf5-akonadi-server-21.08.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kf5-akonadi-server-21.08.3-1.el9.x86_64 requires libQt5Sql.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kf5-akonadi-server-21.08.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtbase-5.15.2-29.el9.x86_64
  - cannot install the best update candidate for package kf5-akonadi-server-21.08.3-1.el9.x86_64
 Problem 3: cannot install both qt5-qtbase-gui-5.15.3-1.el9.x86_64 and qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - package kf5-kirigami2-5.90.0-1.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - cannot install the best update candidate for package kf5-kirigami2-5.90.0-1.el9.x86_64
 Problem 4: cannot install both qt5-qtwayland-5.15.3-1.el9.x86_64 and qt5-qtwayland-5.15.2-15.el9.x86_64
  - package kwayland-integration-5.23.4-1.el9.x86_64 requires libQt5WaylandClient.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtwayland-5.15.2-15.el9.x86_64
  - cannot install the best update candidate for package kwayland-integration-5.23.4-1.el9.x86_64
 Problem 5: package qt5-qtwebengine-5.15.8-3.el9.1.x86_64 requires libQt5Quick.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install both qt5-qtdeclarative-5.15.3-1.el9.x86_64 and qt5-qtdeclarative-5.15.2-10.el9.x86_64
  - cannot install the best update candidate for package qt5-qtwebengine-5.15.8-3.el9.1.x86_64
  - cannot install the best update candidate for package qt5-qtdeclarative-5.15.2-10.el9.x86_64
 Problem 6: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-linguist-5.15.3-3.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kf5-frameworkintegration-5.90.0-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-linguist-5.15.2-11.el9.x86_64
  - cannot install the best update candidate for package kf5-frameworkintegration-5.90.0-1.el9.x86_64
 Problem 7: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtbase-devel-5.15.3-1.el9.x86_64 requires libQt5DBus.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtbase-devel-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3-1.el9, but none of the providers can be installed
  - package kf5-kdeclarative-5.90.0-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtbase-devel-5.15.2-29.el9.x86_64
  - cannot install the best update candidate for package kf5-kdeclarative-5.90.0-1.el9.x86_64
 Problem 8: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtbase-mysql-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtbase-mysql-5.15.3-1.el9.x86_64 requires libQt5Sql.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtbase-mysql-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3-1.el9, but none of the providers can be installed
  - package kf5-ki18n-5.90.0-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtbase-mysql-5.15.2-29.el9.x86_64
  - cannot install the best update candidate for package kf5-ki18n-5.90.0-1.el9.x86_64
 Problem 9: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtgraphicaleffects-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package kf5-kwayland-5.90.0-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtgraphicaleffects-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package kf5-kwayland-5.90.0-1.el9.x86_64
 Problem 10: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtimageformats-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package kf5-kxmlgui-5.90.0-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kf5-kxmlgui-5.90.0-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtimageformats-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package kf5-kxmlgui-5.90.0-1.el9.x86_64
 Problem 11: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtlocation-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtlocation-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package kuserfeedback-1.0.0-8.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtlocation-5.15.2-9.el9.x86_64
  - cannot install the best update candidate for package kuserfeedback-1.0.0-8.el9.x86_64
 Problem 12: cannot install both qt5-qtbase-gui-5.15.3-1.el9.x86_64 and qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - package qt5-qtmultimedia-5.15.3-1.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kwin-libs-5.23.4-1.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtmultimedia-5.15.2-7.el9.x86_64
  - cannot install the best update candidate for package kwin-libs-5.23.4-1.el9.x86_64
 Problem 13: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtquickcontrols-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package kwin-wayland-5.23.4-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package kwin-wayland-5.23.4-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtquickcontrols-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package kwin-wayland-5.23.4-1.el9.x86_64
 Problem 14: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtquickcontrols2-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtquickcontrols2-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package kwin-x11-5.23.4-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtquickcontrols2-5.15.2-7.el9.x86_64
  - cannot install the best update candidate for package kwin-x11-5.23.4-1.el9.x86_64
 Problem 15: cannot install both qt5-qtbase-gui-5.15.3-1.el9.x86_64 and qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - package qt5-qtscript-5.15.3-1.el9.x86_64 requires libQt5Widgets.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package layer-shell-qt-5.23.4-1.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtscript-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package layer-shell-qt-5.23.4-1.el9.x86_64
 Problem 16: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtsensors-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtsensors-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package maliit-framework-qt5-2.0.0-4.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtsensors-5.15.2-7.el9.x86_64
  - cannot install the best update candidate for package maliit-framework-qt5-2.0.0-4.el9.x86_64
 Problem 17: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtsvg-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtsvg-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package plasma-integration-5.23.4-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtsvg-5.15.2-8.el9.x86_64
  - cannot install the best update candidate for package plasma-integration-5.23.4-1.el9.x86_64
 Problem 18: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qttools-5.15.3-3.el9.x86_64 requires libQt5DBus.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qttools-5.15.3-3.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package plasma-workspace-5.23.5-2.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qttools-5.15.2-11.el9.x86_64
  - cannot install the best update candidate for package plasma-workspace-5.23.5-2.el9.x86_64
 Problem 19: cannot install both qt5-qtbase-gui-5.15.3-1.el9.x86_64 and qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - package qt5-qttools-libs-designer-5.15.3-3.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qttools-libs-designer-5.15.3-3.el9.x86_64 requires libQt5Widgets.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package plasma-workspace-libs-5.23.5-2.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qttools-libs-designer-5.15.2-11.el9.x86_64
  - cannot install the best update candidate for package plasma-workspace-libs-5.23.5-2.el9.x86_64
 Problem 20: package qt5-qtbase-5.15.2-29.el9.x86_64 requires qt5-qtbase-common = 5.15.2-29.el9, but none of the providers can be installed
  - package qt5-qtnetworkauth-5.15.2-4.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtnetworkauth-5.15.2-4.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install both qt5-qtbase-common-5.15.3-1.el9.noarch and qt5-qtbase-common-5.15.2-29.el9.noarch
  - cannot install the best update candidate for package qt5-qtnetworkauth-5.15.2-4.el9.x86_64
  - cannot install the best update candidate for package qt5-qtbase-common-5.15.2-29.el9.noarch
 Problem 21: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtwebchannel-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtwebchannel-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package qt5-qtspeech-5.15.2-4.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtspeech-5.15.2-4.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtwebchannel-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package qt5-qtspeech-5.15.2-4.el9.x86_64
 Problem 22: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtx11extras-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package qt5-qtvirtualkeyboard-5.15.2-4.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtvirtualkeyboard-5.15.2-4.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtx11extras-5.15.2-6.el9.x86_64
  - cannot install the best update candidate for package qt5-qtvirtualkeyboard-5.15.2-4.el9.x86_64
 Problem 23: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtxmlpatterns-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtxmlpatterns-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package qt5-qtwebkit-5.212.0-0.60.alpha4.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtxmlpatterns-5.15.2-7.el9.x86_64
  - cannot install the best update candidate for package qt5-qtwebkit-5.212.0-0.60.alpha4.el9.x86_64
 Problem 24: cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtsvg-5.15.3-1.el9.x86_64 requires libQt5Core.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtsvg-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package xdg-desktop-portal-kde-5.23.4-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - package qt5-qtsvg-devel-5.15.3-1.el9.x86_64 requires qt5-qtsvg(x86-64) = 5.15.3-1.el9, but none of the providers can be installed
  - cannot install the best update candidate for package xdg-desktop-portal-kde-5.23.4-1.el9.x86_64
  - cannot install the best update candidate for package qt5-qtsvg-devel-5.15.2-8.el9.x86_64
 Problem 25: problem with installed package xdg-desktop-portal-kde-5.23.4-1.el9.x86_64
  - package xdg-desktop-portal-kde-5.23.4-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.2, but none of the providers can be installed
  - cannot install both qt5-qtbase-5.15.3-1.el9.x86_64 and qt5-qtbase-5.15.2-29.el9.x86_64
  - package qt5-qtx11extras-5.15.3-1.el9.x86_64 requires qt5-qtbase(x86-64) = 5.15.3, but none of the providers can be installed
  - package qt5-qtx11extras-devel-5.15.3-1.el9.x86_64 requires qt5-qtx11extras(x86-64) = 5.15.3-1.el9, but none of the providers can be installed
  - cannot install the best update candidate for package qt5-qtx11extras-devel-5.15.2-6.el9.x86_64
 Problem 26: package signon-ui-0.15-16.el9.x86_64 requires libQt5WebKit.so.5()(64bit), but none of the providers can be installed
  - package signon-ui-0.15-16.el9.x86_64 requires libQt5WebKit.so.5(Qt_5)(64bit), but none of the providers can be installed
  - package signon-ui-0.15-16.el9.x86_64 requires libQt5WebKitWidgets.so.5()(64bit), but none of the providers can be installed
  - package signon-ui-0.15-16.el9.x86_64 requires libQt5WebKitWidgets.so.5(Qt_5)(64bit), but none of the providers can be installed
  - package qt5-qtwebkit-5.212.0-0.60.alpha4.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install both qt5-qtbase-gui-5.15.3-1.el9.x86_64 and qt5-qtbase-gui-5.15.2-29.el9.x86_64
  - package qt5-qttools-libs-designer-5.15.3-3.el9.x86_64 requires libQt5Gui.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qttools-libs-designer-5.15.3-3.el9.x86_64 requires libQt5Widgets.so.5(Qt_5.15.3_PRIVATE_API)(64bit), but none of the providers can be installed
  - package phonon-qt5-4.11.1-8.el9.x86_64 requires libQt5Designer.so.5()(64bit), but none of the providers can be installed
  - package phonon-qt5-4.11.1-8.el9.x86_64 requires libQt5Designer.so.5(Qt_5)(64bit), but none of the providers can be installed
  - package qt5-qttools-libs-designer-5.15.2-11.el9.x86_64 requires qt5-qttools-common = 5.15.2-11.el9, but none of the providers can be installed
  - cannot install both qt5-qttools-common-5.15.3-3.el9.noarch and qt5-qttools-common-5.15.2-11.el9.noarch
  - cannot install the best update candidate for package signon-ui-0.15-16.el9.x86_64
  - cannot install the best update candidate for package qt5-qttools-common-5.15.2-11.el9.noarch
  - cannot install the best update candidate for package phonon-qt5-4.11.1-8.el9.x86_64
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Guessing those are packages from EPEL?

Seen a similar problem when 8.6 came, EPEL was not in line with 8.6 yet, creating some dependency issues. Can it be something similar with 9.1?

The 9.0 (and 8.6) had Qt5 5.15.2. The 9.1 (and 8.7) has Qt5 5.15.3.

Apparently that is a drastic change in the library that requires rebuild of all applications that do use Qt5. All Qt5-apps in Alma have done so. KDE is not one of them.

EPEL has to rebuild the whole KDE for both el8_7 and el9_1. They are not ready yet.