launchpad-dev team mailing list archive

[Max Bowsher <maxb@xxxxxxx>]

On 17/03/10 20:35, Max Bowsher wrote:
> On 17/03/10 20:14, Michael Hudson wrote:
> > Julian Edwards wrote:
> > > Hey folks
> > >
> > > I am in the throes of installing LP on a new laptop on which I
> > > installed a
> > > fresh copy of lucid.
> > >
> > > Apart from the spidermonkey issue that we already know about, I found
> > > another
> > > problem when running update-sourcecode:
> > >
> > > File
> > > "/usr/lib/python2.5/site-packages/bzrlib/plugins/svn/__init__.py", line
> > > 120, in init_subvertpy
> > > raise DependencyNotPresent("subvertpy", "bzr-svn: %s" % e.message)
> > > bzrlib.errors.DependencyNotPresent: Unable to import library
> > > "subvertpy": bzr-
> > > svn:
> > >
> > >
> > > It looks like this is down to the fact that update-sourcecode needs
> > > subvertpy
> > > to run, but subvertpy is built by update-sourcecode ...
> > >
> > > The lucid python-subvertpy package is only built for python 2.6 and the
> > > update-sourcecode script is explicitly using python 2.5.
> >
> > That looks like the packaging is broken somewhere then -- if bzr-svn is
> > installed in the 2.5 area but python-subvertpy is not, which is what it
> > looks like, then that's a bug that has nothing to do with Launchpad.
> >
> > Where are your bzr-svn and python-subvertpy packages from?
>
> Moreover, where's your python2.5 bzrlib from? A lucid install shouldn't
> have one.

Oh. Gosh. Somehow, my upgraded Lucid system doesn't have a python2.5 
bzrlib, but yes, a fresh install of python2.5-minimal does trigger it to 
be linked/bytecompiled for 2.5. Right.

OK, this all makes sense. Not sure what, if anything, we should do about 
it, but it makes sense.

> > > When I remove that
> > > 2.5 to make it use the system python, all seems well.
> >
> > > Is there a good reason for this script to use 2.5 or can I commit a
> > > change to
> > > make it use the system python?
> >
> > Using the system python would probably be OK, but I think finding/fixing
> > the real bug would be better.
>
> I've been meaning to propose a branch to change update-sourcecode to use
> the system python too, for a different reason. As I mention above, a
> Lucid system doesn't have bzrlib available under /usr/bin/python2.5.
>
> I view using the system python as the correct approach for
> update-sourcecode: Note that in a fresh invocation of rocketfuel-setup,
> rocketfuel-setup will call rocketfuel-get which will call
> update-sourcecode BEFORE anything buildout-ish happens.

I still think that using the system python for update-sourcecode is the 
right thing to do.

Max.