map -package:base -is:exact -package:case-insensitive -package:unordered-containers -package:bytestring -package:aeson -package:pipes package:Cabal
Monadic variant of mapAccumL.
A map from component name to all matching components. These coincide
A GHC version-dependent mapping of extensions to flags. This must be
set to be able to make use of the ghcOptExtensions