Hello. In testing and unstable, most Ada packages FTBFS because some changes libgnat6-dev invalidate their .ali files. Fixing this requires a source upload and a passage through the NEW queue for every library.
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866355 In experimental, the migration to gnat-7 is on its way. Most FTBFS are also caused by obsolete .ali files, but it is sufficient to recompile as the ALI/SO versions are already diffenent *from the ones in unstable*. asis aunit dh-ada-library florist gmpada gnatcoll gpr gtkada ncursesada opentoken templates-parser texttools xmlada xmlezout are mostly completed. adabrowse adacgi adacontrol adasockets ahven alog anet aws dbusada gnat-gps liblog4ada pcscada polyorb spark topal need to be updated. Now that gcc-7 is available in testing, and its ali files do not change anymore, I suggest that we start uploading to unstable.