Renaming the 3.8.1 ebuild works fine. But suggest dropping the dev-python/egenix-mx-base rdepend as changelog has: Dropped dependence on mx.DateTime module. N.B. it also says: Dropped support for Python below 2.3 and PostgreSQL below 7.4
Reassigning to postgresql herd.
+*pygresql-4.0 (23 Apr 2009) + + 23 Apr 2009; Patrick Lauer <patrick@gentoo.org> +pygresql-4.0.ebuild: + Bump to 4.0. Fixes #256329