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MC's debugger will be bundled with their product. Therefore, no Debugger Command should be shown in the Build Tools panel when one of their toolchains is selected (although some kind of read-only text with no [...] button is probably appropriate). Also, no version information needs to be provided.
The tools dialog doesn't belong to projects. Code is in core and works independently on projects. In general toolchain issues are not project issues.
*** This issue has been marked as a duplicate of 169151 ***