Nicolas Pouillard wrote:
In fact, Darcs could sign all patches, so that tags are not "special". I
just took a look at the Darcs 2 format. It looks like it should be easy
to add an RSA signature. This is what a patch looks like:
Tags are kind of special. This is due to patch commutation that can change
their representation. But by definition a tag patch constrain all patches
that it depends upon to no longer change. So one can store a hash in there.
Ok. But that doesn't prevent us from signing tags, does it? I'm only
partially familiar with the theory of patches, but my understanding is
that a tag is just a patch that is artificially dependent on every
current patch in the repository.
The more I think about it the more I like the idea of signing tags and
other patches. It seems to retain the Darcs concept that "there are no
versions, there are only patches" and it seems to have the data
integrity features that some of the other SCMs have.
Daniel.
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