I saw this in-development screenshooter on OMG Ubuntu:
http://www.omgubuntu.co.uk/2018/01/flam ... annotation
https://github.com/lupoDharkael/flameshot
So after cleaning up the debian folder in the source a bit, I have it in an OBS repository:
https://build.opensuse.org/package/show ... /flameshot
Though there may be a bloated snap or flatpak package for it from the developer soon, too.