As you can see in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=918382 gimp is relying (Depending) on a broken upload.
Perhaps you could make it Depend on libopenexr24 instead of libopenexr23.
- Bug#918382: trying to overwrite '/usr/lib/x86_64-li... 積丹尼 Dan Jacobson
- Bug#918382: trying to overwrite '/usr/lib/x86_... Mathieu Malaterre
- Bug#918382: broken upload 積丹尼 Dan Jacobson
- Bug#918382: broken upload Mathieu Malaterre
- Bug#918382: broken upload 積丹尼 Dan Jacobson
- Bug#918382: closed by Mathieu Malaterre <ma... Adrian Bunk
- Bug#918382: closed by Mathieu Malaterre <ma... 積丹尼 Dan Jacobson
