[Image-SIG] Pillow, the "friendly" PIL fork

[Christopher Barker]

Alex Clark wrote:
> On 8/1/10 3:04 PM, in article 4C55C525.9090809 at noaa.gov, "Christopher
> Barker" <Chris.Barker at noaa.gov> wrote:
> 
> Š
>> Is packaging the only "issues" this fork is for?
> 
> Yes. In Plone-land we rely a great deal on packages on PyPI.
 > Buildout is a
> tool (which my 'Plone site admin' book covers in great detail, FWIW) we use
> exclusively to build Plone CMS applications.

couldn't you have "recipes" for buildout that does a little extra for 
certain packages -- like in this case, remove the PIL.pth file.

Or maybe change the name of the Zope package named "Image", as Fredrik 
mentioned, PIL has been around a long time.

But in any case, a fork seems like a lot of work for such a simple conflict!

-Chris



> Using Buildout to install packages is more or less the equivalent of running
> "easy_install SomePackage", only the result is an "instance" script with the
> packages specified in the buildout packages added to the sys.path. E.g.:
> 
> 
> #!/Users/aclark/Developer/python-buildout/python-2.4/bin/python2.4
> 
> import sys
> sys.path[0:0] = [
>   '/Users/aclark/Developer/eggs/Plone-3.3.5-py2.4.egg',
>   '/Users/aclark/Developer/eggs/Pillow-1.1-py2.4-macosx-10.6-i386.egg',
>   '/Users/aclark/Developer/eggs/plone.recipe.zope2instance-3.6-py2.4.egg',
>   '/Users/aclark/Developer/eggs/zc.recipe.egg-1.2.2-py2.4.egg',
>   '/Users/aclark/Developer/eggs/distribute-0.6.14-py2.4.egg',
>   
> '/Users/aclark/Developer/python-buildout/python-2.4/lib/python2.4/site-packa
> ges',
>   '/Users/aclark/Developer/eggs/Products.PloneTestCase-0.9.9-py2.4.egg',
> Š
> 
> 
> If I list PIL in Buildout, I get the latest on PyPI (or some version I
> specify) and it "breaks Zope" due to the issues we discussed.
> 
> As such, various alternative re-packages have appeared:
> 
> - http://download.zope.org/distribution/PILwoTk-1.1.6.4.tar.gz
> - http://dist.repoze.org/PIL-1.1.6.tar.gz
> - http://dist.plone.org/thirdparty/PIL-1.1.7.tar.gz
> 
> Now, you can use Buildout to install PILwoTk quite easily simply by telling
> Buildout where to find it, e.g.:
> 
>   [buildout]
>   find-links = http://download.zope.org/distribution/PILwoTk-1.1.6.4.tar.gz
> 
> But it's not clear (to me at least) if the same is true of the re-packages
> that are not *renamed* e.g.
> http://dist.plone.org/thirdparty/PIL-1.1.7.tar.gz
> 
> That is because Buildout's default index is PyPI and it will always find PIL
> there first (I think).
> 
> So, I wanted a fork, because I wanted to take the latest re-packaging (
> http://dist.plone.org/thirdparty/PIL-1.1.7.tar.gz) and "release" it to PyPI.
> 
> Now I can specify the Pillow package in Buildout, and Buildout will find
> "the right one". (Here's a simple Plone buildout example:
> http://svn.aclark.net/svn/public/buildout/plone/trunk/buildout.cfg)
> 
> Let me parse the rest of your and Fredrik's comments, and let them sink in a
> bit, and get back to youŠ
> 
> (This is a very helpful dialogue I think, thank you all!)
> 
> 
>> -Chris
>>
>>
> 


-- 
Christopher Barker, Ph.D.
Oceanographer

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