[libcxx-commits] [libcxx] [libc++] Add a utility for checking the output of commands (PR #65917)

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philnik777 wrote:

> In the interest of keeping the review queue small and relevant, I then suggest we close this PR as option (1) is investigated.
> 
> @philnik777 WDYT?

I've converted it to a draft for now to clear up the queue.

https://github.com/llvm/llvm-project/pull/65917