One package that needs building for 64-bit is wine. I've been reading the wine wiki pages around http://wiki.winehq.org/Wine64
to get some clues, but it looks pretty daunting. That's probably why no one has done it yet.
It looks as if the first problem is to decide what we want to build. There are two aspects here:
1. pclos has wine 1.2.x but the current version is 1.4.x, so do we upgrade first and then add a 64-bit build, or do we do that in the reverse order? Doing both at the same time is likely to make troubleshooting difficult.
2. Do we aim for a Win32 wine (replicating the functionality on 32-bit) or for a WoW64 wine which might run some (it's still a bit experimental) Win64 Applications, or do we start with the first and then seek to upgrade to the other later?
The next question is how feasible it is to aim for one combined SRPM for 32 and 64 pclos, and that probably depends on how easy it is to combine the two? My initial guess is it should be possible by using conditional tests in the .spec file, but I'm not sure.
Finally, of course, we need to ensure all dependencies are packaged first.
I presume this is one of the missing packages that stops pclos 64 going live, though I don't know how it relates to other needs. It looks pretty daunting and my time is limited, but with the right support I'd be happy to give it a go. Is anyone else working on it? I suppose that's the first question...