Use OpenCV instead of OpenCV headless

[ReFlo]

Hello to all,
I currently have a project where I am using opencv with the "imshow" method. This means that I can not use the headless package of opencv. Now I have the problem that poetry always tries to install opencv and opencv headless, since both are dependencies. Is there any way to set an alternative for the headless version in this project. Otherwise I always get an error message from poetry that only one version is supported.

I found something like that here: https://github.com/aleju/imgaug/blob/master/setup.py

[ReFlo]

This question would be solved with the PR: #1023