How to have plugins in gwenview?

[Frédéric]

With F25 and F26, the plugin list in gwenview (16.12.3.2.fc26) is very
small. For example there is no panorama maker.

This is even if kf5-kipi-plugins and kf5-kipi-plugins-libs are
installed (5.6.0.1.fc26).

Why such a regression?

F