Please check whether the use of 'einstall' in this ebuild is actually needed. From a quick glance at the Makefile, it seems to have proper support for DESTDIR. Therefore, if possible please replace the call to 'einstall' with proper 'default' or 'emake DESTDIR="${D}" install'. Thanks.
+*dwun-0.96e-r3 (04 Dec 2014) + + 04 Dec 2014; Sergey Popov <pinkbyte@gentoo.org> +dwun-0.96e-r3.ebuild, + files/dwun: + Revision bump: EAPI 5, epatch_user, replace einstall with default src_install + phase function call, wrt bug #521580, respect compiler, replace /var/run with + /run