[MERGE] Development1 format (StackedBranches)

[John Arbash Meinel]

John Arbash Meinel has voted tweak.
Status is now: Conditionally approved
Comment:
+from bzrlib.repofmt.pack_repo import 
RepositoryFormatPackDevelopment1Subtree

^- If at all possible, this should be lazy_import or just wait until you 
actually get to __init__ to import it.
Because otherwise every time you access *any* Branch, you have to import 
all of the pack_repo code. (You may often do that, but maybe not when we 
reach format +1).


As for the 'fallback_repositories' stuff. I think the problem is that it 
needs to defer the check to the _real_repository if it is deferring 
there for the requests. But with Robert's VF changes coming in, isn't it 
more likely that things will be compatible? I wouldn't want to spend too 
long fixing RemoteRepo to do a lot of checking, only to have it 
unnecessary once VF lands.

I *think* I agree with you, that it should be calling

self._ensure_real()
self._real_repository._add_fallback_repository_check(fallback_repo)



For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C48479ECD.1060408%40canonical.com%3E