After some local experimentation, adding "Multi-Arch: foreign" to gsfonts-x11 resolves the problem and allows libinventor1:i386 to be installed.
- Bug#968266: libinventor1: broken dependency for i386 package Jarl Gullberg
- Bug#968266: Jarl Gullberg
After some local experimentation, adding "Multi-Arch: foreign" to gsfonts-x11 resolves the problem and allows libinventor1:i386 to be installed.