[Zope3-Users] Buildout and custom python

[Jim Fulton]

On Dec 20, 2007, at 8:03 PM, David Pratt wrote:

> Hey Darryl. Our minds were in a similar place today. I finally had  
> decided to move away from my system python starting on my mac and  
> also having a spot of trouble. I put something simple together below  
> to illustrate what happened in my instance.
>
> Here the eggs built with the python would not install. I initially  
> though it was the lxml I was compiling, but it was just happened to  
> be the first part requiring the custom-python. Eggs were made, and I  
> could see the temp folder also, but when was finalizing the install,  
> it threw the error and without much verbosity, the tempfolder it was  
> installing into disappeared.
>
> Note, I did not include the custom-python as a part in the buildout.  
> I tend to like the python24:location type of notation since it is  
> fairly explicit when you have a number of pieces of software you are  
> building.
>
> Regards
> David
>
> [buildout]
> develop = .
> parts = python24
>        interpreter
> index = http://download.zope.org/ppix
> log-level = DEBUG
>
> [python24]
> recipe = zc.recipe:cmmi
> url = http://python.org/ftp/python/2.4.4/Python-2.4.4.tgz
>
> [custom-python]
> executable = ${python24:location}/bin/python
>
> [interpreter]
> recipe = zc.recipe.egg
> interpreter = interpreter
> eggs = Cheetah==1.0
> python = custom-python
>
>
> Here are the highlights:

Having *just* highlights makes it difficult to follow what's going on.

>
>
> Some verification it is using the right python...
>
> Getting distribution for 'Cheetah==1.0'.
> We have the best distribution that satisfies 'setuptools'.
> Picked: setuptools = 0.6c7
> Running easy_install:
> /Users/davidpratt/Desktop/Buildouts/osxdeploy2/parts/python24/bin/ 
> python "-c" "from setuptools.command.easy_install import main;  
> main()" "-mUNxd" "/Users/davidpratt/Desktop/Buildouts/osxdeploy2/ 
> eggs/tmprQq-MH" "-v" "/Users/davidpratt/Desktop/Buildouts/download- 
> cache/dist/Cheetah-1.0.tar.gz"
> path=/Users/davidpratt/Desktop/Buildouts/osxdeploy2/eggs/ 
> setuptools-0.6c7-py2.4.egg
>
> Processing Cheetah-1.0.tar.gz
>
> Last few lines of output.. some time later.
>
> changing mode of /Users/davidpratt/Desktop/Buildouts/osxdeploy2/eggs/ 
> tmprQq-MH/Cheetah-1.0-py2.4-macosx-10.3-ppc.egg/EGG-INFO/ 
> top_level.txt to 755
> changing mode of /Users/davidpratt/Desktop/Buildouts/osxdeploy2/eggs/ 
> tmprQq-MH/Cheetah-1.0-py2.4-macosx-10.3-ppc.egg/EGG-INFO/scripts/ 
> cheetah to 755
> changing mode of /Users/davidpratt/Desktop/Buildouts/osxdeploy2/eggs/ 
> tmprQq-MH/Cheetah-1.0-py2.4-macosx-10.3-ppc.egg/EGG-INFO/scripts/ 
> cheetah-compile to 755
>
> Installed /Users/davidpratt/Desktop/Buildouts/osxdeploy2/eggs/tmprQq- 
> MH/Cheetah-1.0-py2.4-macosx-10.3-ppc.egg
>
> Because this distribution was installed --multi-version, before you  
> can
> import modules from this package in an application, you will need to
> 'import pkg_resources' and then use a 'require()' call similar to  
> one of
> these examples, in order to select the desired version:
>
>    pkg_resources.require("Cheetah")  # latest installed version
>    pkg_resources.require("Cheetah==1.0")  # this exact version
>    pkg_resources.require("Cheetah>=1.0")  # this version or higher
>
>
> Note also that the installation directory must be on sys.path at  
> runtime for
> this to work.  (e.g. by being the application's script directory, by  
> being on
> PYTHONPATH, or by being added to sys.path by your code.)
>
> While:
>  Installing interpreter.
>  Getting distribution for 'Cheetah==1.0'.
> Error: Couldn't install: Cheetah 1.0
> [mac-pg:~/Desktop/Buildouts/osxdeploy2] davidpra%

That's very odd.  It feels like something is missing in the output.

I tried reproducing this. I didn't have the contents of your  
directory, so I had to comment out "develop = .".  You have a typo in  
the recipe specification for the python24 part. After fixing that, I  
ran the buildout above using the system Python on Mac OS X 10.5.1.   
Worked great. The interpreter script uses the custom Python.

The interpreter runs, but when I try to import cheeta, I get a bus  
error..  Unfortunately, there is a problem with using cmmi to install  
Python on Mac OS X 10.5.  There is a bug in Python's configure that  
causes Python to be built incorrectly. The generated pyconfig.h file  
currently requires some tweaking. :(

Jim

--
Jim Fulton
Zope Corporation