map -package:base -is:exact -is:exact -package:bytestring -package:containers -package:text -package:base-compat package:Cabal

Monadic variant of mapAccumL.
A map from component name to all matching components. These coincide with componentGraph
A GHC version-dependent mapping of extensions to flags. This must be set to be able to make use of the ghcOptExtensions.