proposal - move bzrlib down a level

[Robert Collins]

On Thu, 2005-09-01 at 09:49 -0400, Aaron Bentley wrote:
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> Robert Collins wrote:
> > You misunderstand me. I do not mean 'to run bzr', I mean to be able to
> > 'import bzrlib' from a different script in a different source tree.
> 
> So if you actually install bzrlib, you don't have to muck with your
> PYTHONPATH, and there's no garbage.  (btw, is there *any* satisfactory
> way to muck with one's PYTHONPATH?  I don't want to stick the whole
> thing in my profile because I run more than one interpreter, and the
> system libs vary.)

install it where ? Take for instance the pqm install @ pqm.ubuntu.com.
I'm not the sysadmin, so I can't install bzrlib to the python
site-packages easily. If I install it to the source tree I'm working on
I get lovely noise that cant be updated without an rm -rf and a
re-install. Even if I do get our sysadmin to install it, I'm then stuck
with continual fiddling if we want to roll forward, or backwards. This
is a pretty typical scenario for stuff installed
not-on-ones-own-machine.

> So you only need to muck with the PYTHONPATH if you're following the
> bleeding edge, and then the garbage argument doesn't really hold-- the
> only thing that could possibly be misinterpreted is setup.py, and we can
> just re-commit if that changes.

I don't know what 're-commit if that changes' means. The presence of
setup.py in the python path means I can't (for instance) grab any other
setup.py (so now the order of the path matters rather than just being an
effective set). 

With regard to PYTHONPATH fiddling, what I do is have a trivial wrapper
script when I need to run something that does require PYTHONPATH magic.

As for changes needed to bzr to deal with a lib dir rather than bzrlib
at the top dir of the source:

try:
  import bzrlib
except ImportError:
  sys.path.append(os.path.join(sys.argv[0],'..', 'lib'))
  import bzrlib

Rob

-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
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