Comment # 6 on bug 1200664 from Marcus R���ckert

(In reply to Matej Cepl from comment #5)
> The problem is not in using unversioned shebang for packages that require
> unversioned python3 (see its BuildRequires and Requires), but that
> https://build.opensuse.org/package/show/openSUSE:Factory/borgbackup didn't
> get rebuild with new python3 interpreter.

I am aware that slow rebuilding is part of the problem. also picking noarch
from aarch64 needs to be fixed. 

bug we run in the situation that /usr/bin/python3 is provided by a different
package than the versioned path inside the borgbackup package. so strictly
speaking all deps are fulfilled but it doesnt give us a working package. this
needs to be fixed as well.

and one solution to guard against this would be versioned shebang lines. for a
package that does not install anything into sitelib or sitearch we dont have to
version things. but for packages that install things we should do that to make
sure packages do not break silently.

i had this happen to at least _4_ packages for me.