The epkowa driver provided by media-gfx/iscan needs proprietary plugins for several EPSON scanner models. This particular plugin (f720) seems to be required for Epson GT-F720 Epson GT-S620 Epson Perfection V30 Epson Perfection V300 Photo acording to AVASYS http://avasys.jp/hp/menu000001300/hpg000001249.htm and SANE http://www.sane-project.org/cgi-bin/driver.pl?manu=epson&model=&bus=any&v=&p= The ebuild works for me with the iscan-2.19.2.ebuild from bug 248898 http://bugs.gentoo.org/show_bug.cgi?id=248898
Created attachment 195096 [details] Proposed ebuild for binary plugin for epkowa scanner driver.
Nice ebuild - I used it to make my Epson V300 Perfection work (somehow I could not get it working by only copying files from the Debian package, I guess the postinstall script you run is important). Depends on a iscan version bump though.
Created attachment 197449 [details] Proposed ebuild for binary plugin for epkowa scanner driver (Perfection V300) Added amd64 support. Cleaned up linguas support. Added support to unregister the plugin when removed.
Added to Portage after a bit of cleanup (you should run repoman to check for QA stuff). Thanks!