With Fastly we could probably send www.python.org/peps/
to RTD or docs.python.org/devguide/
to the devuide. I think RTD supports setting a canonical URL that includes a path too. FWIW. Of course the look and feel might be different so different domains might be a good idea anyways.
With part of the goal of moving to GitHub being to minimize how much infrastructure we have to run, one of the long-term goals I have is to use Read the Docs to host Python's documentation. But to get there we have to move any "special" docs over first. That means relocating the devguide (it also means relocating the PEPs, but that's another issue and is blocked first and foremost by https://github.com/python/peps/issues/4
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