dev-haskell/pipes: bump up to 4.0.1

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/doctest: bump up to 0.9.10

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/hach: bump up to 0.1.2

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