map -package:base -is:exact -is:exact -package:text -package:unordered-containers -package:case-insensitive -package:containers is:module -package:range-set-list -package:dependent-map -package:bimaps 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.