[rfc] bzr-colo into core

[Jelmer Vernooij]

On Wed, 2011-03-23 at 08:44 -0400, Gordon Tyler wrote:
> On 3/22/2011 10:18 PM, Martin Pool wrote:
> >  * I feel the user model is in an unhappy valley where users do need
> > to know about the repository, branch, wt components, but the ui and
> > documentation don't really expose them as such; instead we tend to
> > talk about the stylized arrangements such as lightweight checkouts and
> > standalone branches.
> > 
> >  * The thing that is closest to being a default, standalone branches,
> > is not something we would normally recommend at all.
> 
> So how about this: `bzr branch URL [DIR]` will create a colo repo if
> there is no shared repo in a parent dir. If URL contains a colo repo,
> all branches would be cloned. A `--standalone` option can be added to
> make it work like it currently does.
> 
> The problem with the bzr-colo implementation is that the URL to a
> particular branch is a little messy if you want to fetch only one
> branch. The only way I can see that getting resolved is by adding some
> kind of indicator to the URL for which branch to fetch. Whether that
> gets resolved to the .bzr/branches/BRANCH or if branches are
> incorporated into repo metadata, I don't know.
I think it would be confusing for "bzr branch" to create more than one
branch. Perhaps this is a good opportunity to remove the "clone" alias
from "bzr branch" and turn it into its own command? "bzr clone" could
create a full clone of the remote control dir, including all of the
branches present.

> >  * The stylized models we do present don't really flow from each
> > other, but rather you have to go back and set things up again if you
> > want to switch from say using standalone branches to using a
> > repository with branches and a switchable tree.
> Isn't that what `bzr reconfigure` is for?
Yeah, reconfigure seems well fit for this.

Cheers,

Jelmer
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