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.
+*nullmailer-1.13-r5 (15 Dec 2014) + + 15 Dec 2014; Justin Lecher <jlec@gentoo.org> +nullmailer-1.13-r5.ebuild: + Drop einstall in favour of plain emake, #521552; prepend chmod/chown calls in + pkg_* with ROOT, #532588 +
+ 05 Jan 2015; Justin Lecher <jlec@gentoo.org> -nullmailer-1.13-r4.ebuild: + Drop old, obsoletes #521552 & #532588 +