[debian-mysql] Bug#1140151: libmariadb-dev-compat: not Multi-Arch co-installable (blocks cross-arch -dev installs)

[Dick Hollenbeck]

A clarification on the root cause, found while building a working multi-arch
   repackaging:

   libmariadb-dev-compat both *provides* and *conflicts/breaks* the same virtual
   packages:

     Provides:  libmariadb-client-lgpl-dev-compat, libmariadbclient-dev-compat
     Conflicts: libmariadb-client-lgpl-dev-compat, libmariadbclient-dev-compat, ...
     Breaks:    libmariadb-client-lgpl-dev-compat, libmariadbclient-dev-compat, ...

   So beyond the missing "Multi-Arch: same" field, two architecture instances
   trip over each other's self-provided virtuals. In my repackaging I had to BOTH
   stamp "Multi-Arch: same" AND strip these self-provided names from
   Conflicts/Breaks before the two arches would co-install. Please verify that
   marking the package Multi-Arch: same is sufficient on its own, or whether the
   self-conflicting virtuals also need adjusting.

   (verified in trixie 1:11.8.6-0+deb13u1 and unstable 1:11.8.8-1)