make install gives me this warning
[ 1%] Automatic MOC for target kritaplugin
AutoMoc warning
---------------
"/home/ikaros/repos/krita/libs/koplugin/KoPluginLoader.h"
Could not find dependency file "myplugin.json"

could this be related to
while launching krita:

qrc:/touchstrip.qml:58: TypeError: Cannot call method 'icon' of null <---- there are tens of messages like these followed by symbol lookup error:
krita/bin/krita: symbol lookup error: /home/ikaros/krita/lib/x86_64-linux-gnu/kritaplugins/kritadefaultdockers.so: undefined symbol: _ZN11KisNodeViewC1EP7QWidget

and krita crashes.

No. The first message is about Qt's moc not skipping a part of the apidox. The second message means you need to remove that .so file because it was renamed.

Ok, thanks again!