nut 2.6.3 was released on January 4, 2012 and fixes bug: 390119 . I was able to copy the 2.6.2 ebuild to 2.6.3 and compile without any errors.
Created attachment 308423 [details, diff] diff between 2.6.2 and 2.6.3 ebuild This deserves a little more than a simple version bump: there is a new automagic about avahi. The diff attached adds a USE flag for this. Beside this change, the 2.6.3 works fine for me, using the blazer_usb driver. Moreover, this also fixes the build when python3 is the active python VM
+*nut-2.6.3 (02 Jun 2012) + + 02 Jun 2012; Michael Weber <xmw@gentoo.org> +nut-2.6.3.ebuild, + +files/nut-2.6.3-CVE-2012-2944.patch: + Version bump (bug 406099, thanks Matthew Stapleton and Guillaume Castagnino). + Include ubuntus CVE-2012-2944.patch to fix bug 419377. +