Has anybody asked the gcc/gdc maintainers about this? The changelog says nothing about dropping phobos on arm, so I think this might simply be a packaging bug. As far as I know, gdc 4.9 on arm is supported upstream.
- Bug#754665: Removal of D based games from armel/armhf (Ta... Markus Koschany
- Bug#754665: Removal of D based games from armel/armh... Peter De Wachter
- Bug#754665: Removal of D based games from armel/... Markus Koschany