Bug#1064950: AW: Bug#1064950: apache2: (Legacy?) "Depends: apache2-data (= ${source:Version})," in debian/control breaks binNMU builds.

["Warlich, Christof" <christof.warlich@siemens.com>]

Sebastian Ramacher wrote:
> This is wrong. apache2-data is an Architecture: all package,
> but apache2 is Architecture: any. So using ${source:Version}
> here is correct. Note that Debian does not currently support
> binNMUs for Architecture: all packages, so apache2-data will
> never have a +bX version.

Thanks for that clarification.

This is somewhat confusing for someone not doing package builds as a daily profession: If just doing a "dpkg-buildpackage -us -uc" on the apache2 sources _with_ the +bX extension, the apache2-data binary package _does_ get the +bX extension as well, at least with my build, causing the issue that I described initially.

Thus, as much as I think I've leaned so far, binNMU builds on source packages that also produce Architekture: all binary packages must always be built separately from sources without the +bX extension for the Architecture: all binary packages, whereras the architecture-dependent binary packages may be built from a source package with a +bX extension, right?

If this assumption is true, then why is the Debian build system (i.e. dpkg-buildpackage) not smart enough to simply ignore an existing +bX extension for Architecture: all binary packages? IMHO, this would simplify matters, as it would have avoided the pitfall that I stumbled into altogether.

Please note that I my main goal is to better understand how to do it right for future builds.