cvs to bazaar migration

[Doug Rabson]

On 6 May 2008, at 14:20, Michael Haggerty wrote:

> Stefan Monnier wrote:
>>> Is there any chance we could get a cvs2bzr command added to cvs2svn?
>>> Initially, it could do exactly the same as cvs2git code wise, but  
>>> the
>>> web page could explain how to import into Bazaar.  I'm happy to  
>>> help with
>>> web page content if you want/need assistance there.
>>
>> IIUC one of the problems with cvs2svn when used for fastimport is  
>> that
>> it doesn't infer file renames, probably because Git does its own
>> file-rename inference.
>>
>> Then again, maybe it does guess file renames, and I just hit an  
>> unlucky
>> failure of the guesswork when I tried it,
>
> cvs2svn does not infer file renames at all, even for Subversion, where
> that information would be useful.  Indeed, cvs2svn issue #1 covers the
> detection of server-side copies and renames:
>
> http://cvs2svn.tigris.org/issues/show_bug.cgi?id=1
>
> File copy and rename information is not available from CVS, so  
> detecting
> them would be a matter of heuristics.  Moreover, different people  
> handle
> renames in different ways:
>
> 1. Delete the old file via "cvs rm" and create a completely new file
> with the same contents (losing history)
>
> 2. Rename the old *,v file within the CVS repository (breaking all  
> older
> revisions)
>
> 3. Copy the *,v file to the new name then mark the old copy deleted  
> via
> "cvs rm"
>
>  3a. Leave the old tags in the new file copy (breaking old revisions
> and old tags)
>
>  3b. Remove old tags from the new file copy (breaking old revisions  
> but
> not old tags)

The FreeBSD project uses another variant:

3c. Copy the ,v to the new name and rename old tags by pre-pending  
"old".