What adapter to choose for the X-Pro 1

I currently only have the XF lenses and a single M mount lens with the m mount adapter for the X-Pro 1.

However i would like to get some really wide 8,10,12 etc. and can't wait for fuji to release its own. A lens which looks interesting to me is the Sigma 10-20 (77mm filter thread). Now this lens comes in a lot of mounts. Is any of those mounts offering manual aperture settings or is there an adapter which would allow me to set the aperture?