[BUG] Bzr installation is completely broken

[Martin Pool]

John Arbash Meinel wrote:
> Nicholas Allen wrote:
>> Hi,
>>
>> I did a setup.py install with the latest code base and now bzr refuses
>> to run at all. Even if I install an older version I still have this
>> problem. Here is the output I get:
> 
> You need to remove your old bzrlib/ install before installing a new one.
> 
> This is a bug in python's built-in install functionality. In that it
> just adds files, it doesn't remove old ones. I think if you just delete
> "C:\Python24\Lib\site-packages\bzrlib" first, and then install bzr it
> will work fine.
> 
> You may want to copy ...\bzrlib\plugins\* first, in case you had any
> plugins installed.

I think this would be a good reason to do the installation as a Python
egg, so it is just one file that can be completely replaced without
things hanging around.

I know eggs are redundant with OS package management (or at least with
good package managers), but for people who do choose to install from
source they seem to have some benefits.

-- 
Martin