map -package:Cabal -package:base -package:text -package:pipes -package:containers -is:exact -package:case-insensitive is:module -package:rebase -package:cursor -package:ghc package:stack
A sourcemap maps a package name to how it should be built, including
source code, flags, options, etc. This module contains various stages
of source map construction. See the build_overview.md doc for
details on these stages.