Read this if your package BuildRequires qt(4)-devel!!!

[Kevin Kofler]

I wrote:
> for all maintainers of packages which BuildRequire qt4-devel (or qt-devel,
> but the versioned virtual Provides is preferred): please, when you plan to
> push updates for your packages, ALWAYS CHECK what version of Qt your
> package got built against and DO NOT PUSH your update to stable before
> that version of Qt goes stable! A package built against Qt 4.6 WILL NOT
> WORK AT ALL with Qt 4.5!!! (This is always the case, Qt is backwards- but
> not forwards- compatible.)

FYI, while the above is still sane advice (it's always a good idea to verify 
that you aren't building against a newer Qt from a buildroot override!), Qt 
4.6.2 is now queued for the stable updates (it was decided in today's KDE 
SIG meeting to push the big Qt 4.6.2 / KDE 4.4.0 / SIP 4.10 update set out), 
so this particular version bump should no longer be a source of trouble.

        Kevin Kofler