As explained in parent bug Thanks!
+ 21 May 2015; Michał Górny <mgorny@gentoo.org> +ekg2-0.3.1-r2.ebuild, + -ekg2-0.3.1-r1.ebuild, metadata.xml: + 0.3.1: kill SQLite 2 support, switch to USE=sqlite, bug #548658. Add slot + operators.