Thanks for your in-depth analysis! As this problem is way too involved given my understanding of the Debian package management process, I have followed the simple path you provided by requesting the removal of the armel binaries of orthanc-dicomweb: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=959776
- Bug#959473: orthanc-dicomweb build-dependencies... peter green
- Bug#959473: orthanc-dicomweb build-depende... Sébastien Jodogne
- Bug#959473: marked as done (orthanc-dicomw... Debian Bug Tracking System