Runtime view of the precompiled YAML modules that codegen identified as "orphans" — i.e. precompiled modules with no compiled ancestor whose generated package_ would have wired them as children. The empty fallback root (and MainRootModule generally) reads this list and appends the orphans to its moduleDirectChildren, so they're reachable via resolve _ and BuildCtx.rootModule.moduleInternal.modules regardless of whether the root itself is compiled or absent.
Written by CodeGen.generateWrappedAndSupportSources as the classpath resource mill/precompiled-modules.json alongside module-deps-config.json. Bootstrap's walker (BuildFileDiscovery.walkBuildFiles) is the single source of truth for which YAML files exist; runtime code never re-walks the workspace.
relPath and extendsClass mirror what codegen otherwise embeds in generated PrecompiledModuleRef.apply calls. Each *ModuleDeps map is keyed by nested-module path inside the YAML ("" for top-level, "test" for object test: etc.), with values listing sibling refs paired with their byte offset in the YAML for diagnostic reporting.
Reads the entries from the run classloader's resource. Returns an empty sequence when the resource is absent — the no-codegen case where no mill-build step ran (e.g. a workspace with no Mill files at all).
Reads the entries from the run classloader's resource. Returns an empty sequence when the resource is absent — the no-codegen case where no mill-build step ran (e.g. a workspace with no Mill files at all).