build = complete_build_spec_with_defaults (builds[build_name], default_build)
concrete_builds_without_deps = interpret_build (build, build.keys(), {}, [])
concrete_builds = map(reduce_dependencies, concrete_builds_without_deps)
commandlines = map(concrete_build_to_commandline, concrete_builds)
build = complete_build_spec_with_defaults (builds[build_name], default_build)
concrete_builds_without_deps = interpret_build (build, build.keys(), {}, [])
concrete_builds = map(reduce_dependencies, concrete_builds_without_deps)
commandlines = map(concrete_build_to_commandline, concrete_builds)