http://4ynqnnkbfkq327lqr4kfj2udaki224h4isbpjwj5tagxqcgzu7rv6oqd.onion/tags/debug-package-for-multi-arch-same-pkg-not-coinstallable.html
If so, it is not possible to have the debug
symbols for all architecture variants of the binaries available
at the same time. Making a debug package co-installable with itself is very trivial,
when installing the debug symbols beneath: /usr/lib/debug/.build-id/<XX>/<rest-id>.debug dh_strip does this in debhelper compat 9.