I don't think Claude code (or any LLM) is adequate for any programming task, much less something highly technical like an OS project.

I would rather not. While it is already highly questionable to use it normally because it steals opensource code, but let's give it a pass for this thought experiment, it probably scrapped the multiple git repository of Windows leaked source code. In which case it would ABSOLUTELY undermine the project's ability to say it's a clean room implementation

Various versions of Windows have had their source code leaked out in part or almost whole. If Claude produces an exact copy, like LLMs used to do with the fast inverse square root from Doom, Microsoft would have good reason to sue and it'd be on the project to prove that the copyright violation was done by a bot (which makes it legal now).

With the project essentially implementing the entire API method by method, the chances of LLMs repeating some of the leaked source code would be tremendous.

A one-directional fork of ReactOS might be able to make some fast progress for a few people who desperately need certain programs to work, but I don't think the project will benefit from LLMs.

I think it's not ready yet but I agree that eventually it will be. The 40th anniversary of ReactOS might have some substantial features. This is the decade of ReactOS!

I think it would be an elephant in a china shop. ReactOS doesn’t come from React (JS Library)

A cleanroom trained LLM would be needed, no?