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On Mon, Dec 15, 2008 at 7:48 PM, Stephen J. Turnbull  wrote:
> Gwern Branwen writes:
>
>  > It seems to me that one big repo backwards-incompatibility was bad
>  > enough; is there no way packs could be implemented such that 2.x
>  > binaries simply ignore packs and download patches like normal if they
>  > do not support packs?
>
> Since darcs can't use dumb servers yet AFAIK, this is an issue of
> whether format negotiation is available darcs-to-darcs.  If it is,
> then you just have the darcs with the data send patches unless packs
> are requested.

Format negotiation sounds scary and complex to implement. There's no
dumb solution here? For example, I was thinking: what if there were
_darcs/packs/, which contained the pack files, and then pack-enabled
darcs binaries would automatically look for a _darcs/packs/ when doing
a get; older darcs have no reason to look for a packs/ subdirectory
and so would just ignore it.

- --
gwern
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