I'm transferring this from the wiki.  Looks like a wont-fix from the discussion,
but a discussion which risks to come up a again, so I'm tracking it here.

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Do WebDAV / DeltaV. Those are the two IETF standards that will give you the most
uptake.

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''Uptake of what? What exactly do you want to happen with WebDav and Delta V? If
you want get this item of the wishlist, you might at least bring it up on the
users lists. It's not clear what you are wishing for. --MarkStosberg''

''The Subversion people have tried exporting their repositories using WebDAV
(WebDA + DeltaV). They found out that the WebDAV model is sufficiently different
from their model that they needed to include a number of proprietary extensions
to the protocol -- hence losing most of the benefits of using a well-established
protocol. The situation would be even more difficult with Darcs, which is
patch-based rather than file-based, and hence completely different from WebDAV.

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An alternative would be to use WebDA (without the V) as a file transfer protocol
in addition to HTTP and ssh. That's what Arch does, but that would be overkill
for Darcs, which has simpler on-disk structures, and could get away just with
using HTTP's PUT if the remote server supports If-Match properly (WebDA is a
monster of complexity). -- JuliuszChroboczek''