Many thanks @janus for adding support for Cabal files. Having Renovate support makes Haskell one more important bit commercially appealing.
Since the topic of lock files and the lack thereof in Cabal came up in Request for comment: `cabal freeze` doesn't produce a lock file - #58 by malteneuss. Was this the reason to go for “git trailers”? It feels like a hack, but may have be the only reliable option in the current state.