map -package:Cabal -package:base -package:text -is:exact -package:containers -package:bytestring -package:aeson is:module -is:exact -package:dhall -is:exact 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.