Comment # 8 on bug 1201474 from Michal Suchanek

(In reply to Stefan Dirsch from comment #7)
> In sway packages I see requires to
> 
>   libGLESv2.so.2()(64bit)
> 
> and this again is linked against 
> 
>   libGLdispatch.so.0
> 
> So there is no hard requirement to Mesa or other GL drivers (by intention).
> I think you can run into this only when choosing a minimal installation. I
> can't say whether sway works with nVidia's proprietary drivers. Haven't
> tried this. But I think recommending Mesa-dri 
> wouldn't hurt in sway package.

but you do need a GL driver to be able to make use of libGLESv2, right?