Everything installed just fine, but I was really hoping that skanpage would work for me. It also installed without a problem, and created a menu item, but when I tried to launch it, nothing happened. So, I tried to launch it in a terminal, and this was produced:
QQmlApplicationEngine failed to load component
qrc:/qml/MainWindow.qml:331:26: Type ContentView unavailable
qrc:/qml/ContentView.qml:67:13: Type DocumentPage unavailable
qrc:/qml/DocumentPage.qml:14:1: module "org.kde.kquickimageeditor" is not installed
Looks like some dependencies weren't included in the package.