Bug#933431: gnuplot: Please rebuild against wxWidgets GTK 3 package

[swt at techie.net]

Package: gnuplot
Severity: normal

Hi,

Your package appears to be using the wxWidgets GTK 2 implementation.  In 
Debian, we have had a GTK 3 implementation of wxWidgets for some time.  
For the bullseye release, the wxWidgets package maintainers plan to 
remove the GTK 2 version, so we kindly request that you switch your 
package to use the GTK 3 version.  We have a transition tracker [1] 
setup to track progress.

Switching to the GTK 3 version may be as simple as:
1) Update your Build-Depends
   libwxgtk3.0-dev -> libwxgtk3.0-gtk3-dev
   libwxgtk-media3.0-dev -> libwxgtk-media3.0-gtk3-dev
2) Rebuild
3) Test

If everything seems to be working fine, that's probably all you need to do.

There are a couple of known issues:
1) If your package uses wxGLCanvas, this doesn't currently work when running
under Wayland.  As a workaround, you can force use of X.  See bug: [2]
2) If your package uses graphics contexts, it may encounter a problem with
coordinate overflow.  See bug: [3]

If you have any questions, or need assistance with the conversion, please
contact the wxWidgets team, team+wx at tracker.debian.org.

[1] https://release.debian.org/transitions/html/wxwidgets3.0-gtk3.html
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900678
[3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906060