Unfortunately, retroarch nightlies might have some bugs. For instance, in the static version, the content history playlist seems to be broken. And that is a very useful feature.
Also, the new ribbon gfx added to the xmb menu does not work on the zero. It seems to be caused by some unimplemented operations in etnaviv driver, but it looks nice though.
But I will try to updload new opks of both versions, so anyone can help to test the app.