Re: VCS comparison table

On Sun, 2006-10-22 at 22:06 +0200, Jakub Narebski wrote:

David Clymer wrote:

quoted

1. revnos don't work because they don't serve the same purpose as revids
or git's SHA1 commit ids.

Revnos works only locally, or in star-topology configuration. They have
some consequences: treating first parent specially, need for merges
instead of fast-forward even if fast-forward would be applicable,
two different "fetch" operators: "pull" (which uses revids on the
pulled side) and "merge" (which preserves revids on pullee side).

s/revids/revnos/g  but yes, I think I said this later in my previous
email.

quoted

2. bzr does not support fully distributed development because revnos
"don't work" as stated in #1.

Bazaar is biased towards centralized/star-topology development if we
want to use revids. In fully distributed configuration there is no
"simple namespace".

So revnos aren't globally meaningful in fully distributed settings. So
what? I don't see how this translates into bias. There is a lot of
functionality provided by bazaar that doesn't really apply to my use
case, but it doesn't mean that it is indicative of some bias in bazaar.

quoted

3. Ok, bzr does support distributed development, I just say it doesn't
because I think revids are ugly.

I think that bzr revids are uglier that git commit-ids.

If on the pros side of bzr is "simple namespace", you must remember that
it is simple namespace only for not fully distributed development. The
pros of "simple namespace" with cons of "merge" vs "pull" and centralization
required for uniqueness of revids.

I think you've switched revids and revnos, but I get what you are
saying. In fact, I think I said pretty much the same thing in the email
you are replying to. I don't think that anyone is disagreeing about
anything other than the assertion that bzr is biased because revnos are
used to simplify cases where it is possible to do so.

In any case, Matthew Fuller & Carl Worth cover this in greater detail in
emails further down in this thread (or one of its siblings), so I think
I'll stop here.

-davidc

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