================
@@ -685,6 +685,13 @@ void ModuleDepCollectorPP::EndOfMainFile() {
   if (!MDC.ScanInstance.getPreprocessorOpts().ImplicitPCHInclude.empty())
     MDC.addFileDep(MDC.ScanInstance.getPreprocessorOpts().ImplicitPCHInclude);
 
+  if (Module *CurrentModule = PP.getCurrentModuleImplementation()) {
+    if (OptionalFileEntryRef CurrentModuleMap =
+            
PP.getHeaderSearchInfo().getModuleMap().getModuleMapFileForUniquing(
+                CurrentModule))
+      MDC.addFileDep(CurrentModuleMap->getName());
----------------
jansvoboda11 wrote:

The failure is expected. The `"file-deps"` field is intended for consumption by 
tools that might not understand Clang's virtual filesystem overlays, so the 
only thing they can reason about is the on-disk path for files 
(`"external-contents"` in the VFS overlay file). That's of course different 
from what we put on the command-line for Clang itself, as Ben explained above.

https://github.com/llvm/llvm-project/pull/160226
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