Thanks for your reply (I've been away so apologies for late response)
I do not yet understand the relationship between the Gentoo management tools and Spritz / Equo and was hoping for a way to set the USE flags in a Sabayon package management tool.
I have not managed to do this though
emerge -s xsane
Latest version installed: 0.995
Description: graphical scanning frontend
emerge -pv xsane
Calculating dependencies... done!
emerge: there are no ebuilds to satisfy "media-gfx/xsane".
I have gimp include in USE section of /etc/make.conf but the Sabayon tools appear to ignore these configs ??
Regards and Thanks.