use cabal solver to build standalone installation
cabal-bundler: (ab)use cabal-install solver to build standalone
installation bundles.

The OpenBSD port is used to create or update the MODCABAL_MANIFEST
entries for the ports.

Maintainer: The OpenBSD ports mailing-list <ports@openbsd.org>

WWW: https://github.com/phadej/cabal-extras
