dev-haskell/distributed-process: allow latest test-framework-*

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/regexpr: switch to EAPI=5

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-lang/ghc: dropped runghc workaround for now

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>