[Eric] I'm not able to install eric on linux Mint-KDE (bugs.launchpad.net/linuxmint/+bug/1656433)

[GM]

greetings to the list...

As outlined here:

https://bugs.launchpad.net/linuxmint/+bug/1656433
https://forums.linuxmint.com/viewtopic.php?f=47&t=237405&p=1271318#p1271318
http://www.linuxmintusers.de/index.php?topic=39477.0

in brief:
I'm not able to install eric on linux Mint-KDE. All other versions of 
KDE work, all other Linux-Systems I tried worked...

--------------------------------------------
output of "# apt install eric"
...
The following packages have unmet dependencies:
  eric : Depends: python3-pyqt5.qsci but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
...

# apt install python3-pyqt5.qsci
...
The following packages have unmet dependencies:
  python3-pyqt5.qsci : Depends: libqt5scintilla2-12v5 (>= 2.9) but it is 
not going to be installed
...

and further:

$ aptitude why-not python3-pyqt5.qsci
Unable to find a reason to remove python3-pyqt5.qsci.
...

$ aptitude why-not libqt5scintilla2-12v5
i libqt5core5a Breaks libqt5scintilla2-12v5 (< 2.9.2+dfsg-2~)

...
$ aptitude why libqt5core5a
i plasma-integration Depends libqt5core5a (>= 5.6.0~beta)

--------------------------------------------


Any suggestions how it could be managed?

George


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