It looks like the latest development version of Opus/UrbanSim will be
a bit flakey for a few days or a week while we transition to the new
graphical interface. So I made a new stable Opus/UrbanSim release
(4.1.2) that should work with both the old and new versions of
enthought.traits. This is now checked into subversion, and available
for download from www.urbansim.org/download.
If you're using stable release 4.1.1 and traits is working for you,
no need to update -- this release just fixes the traits compatibility
problem.
Alan
On Jan 11, 2008, at 7:17 AM, Alan Borning wrote:
>
> On Jan 10, 2008, at 8:27 AM, James Palma wrote:
>
>> I sent my error messages to the Enthought-Dev mailing list, and this
>> was the response I got. It seems that the behavior of Traits has
>> changed in recent versions, and that I should be running an older
>> version of Traits for the "from enthought.traits.api import View,
>> Group, Item" test to work. The quesiton is, what version of Traits
>> should I be running?
>
> [snip]
>
> Hi - sorry to have not responded to this thread earlier! (I've been
> totally swamped with chairing our faculty recruiting committee.)
> Anyway, yes, the traits API changed.
>
> I think the problem is that the stable release of UrbanSim uses the
> old traits API. If you'd like to use the stable release, then you
> can get the Enthought Python edition 4.3 (which includes the correct
> version of traits already installed). This is at http://
> code.enthought.com/enthon/
>
> Alternatively, I put in a patch for this problem last summer in the
> development release of UrbanSim -- so try downloading the latest code
> from the svn repository and run that. This should then work with the
> latest Python and other current packages.
>
> There is a bit of unfortunate timing here: we are actually about to
> remove all the dependencies on traits from UrbanSim, and in a few
> weeks or a month release a new stable version that doesn't use them.
> (traits is actually a fine package -- but we are developing a much
> enhanced GUI for UrbanSim which includes the QGIS open-source GIS
> system, and QGIS uses the PyQt GUI toolkit, whereas traits uses wx -
> so they weren't compatible.)
>
> Anyway, for now, I'd suggest either reverting to an older Python, or
> using the dev version of UrbanSim. More postings to this list as
> soon as the new GUI is fit for general consumption.
>
> cheers,
> Alan
>
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Received on Sat Jan 12 2008 - 23:21:49 PST
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