[SciPy-user] egg dependency?

David M. Cooke cookedm at physics.mcmaster.ca
Fri Dec 2 16:53:50 CST 2005


Pearu Peterson <pearu at scipy.org> writes:

> On Fri, 2 Dec 2005, Travis Oliphant wrote:
>
>> John Hunter wrote:
>>
>>> I just tried to install the new scipy 0.6.1 on my ubuntu linux, and
>>> got hit with
>>>
>>> peds-pc311:~/python/src/scipy_core-0.6.1> spsi
>>> Running from scipy core source directory.
>>> Traceback (most recent call last):
>>>  File "setup.py", line 38, in ?
>>>    setup_package()
>>>  File "setup.py", line 7, in setup_package
>>>    from scipy.distutils.core import setup
>>>  File "/home/jdhunter/python/src/scipy_core-0.6.1/scipy/distutils/core.py", line 42, in ?
>>>    from setuptools.command import bdist_egg, develop, easy_install, egg_info
>>> ImportError: cannot import name bdist_egg
>>>
>>> If the goal is to make scipy core as easy to install as Numeric, is it
>>> wise to require an egg dependency? In my understanding, egg still has
>>> installation issues of it's own -- eg, it is not installed with the
>>> python2.4 in Ubuntu Hoary, which is only 6-7 months old.
>>>
>> This is a mistake.  My understanding is that setuptools is "supported by
>> not required."   Any setuptools dependency should be handled more
>> gracefully.  I suspect the issue is that you have setuptools installed
>> but an older version then expected, perhaps?
>>
>> I'm not sure, I didn't add this code.   See if you can comment-out that
>> line and continue.
>
> Without looking into details much, this demonstrates well the evilness of 
> using  `try: .. except: ..` blocks when checking the availability of 
> packages. Sure, it's very convinient but there are always (or will be) 
> cases where this sugar fails (or will so). Ahh, I find repeating myself again..

Which, coincidentally, is one of the problems that setuptools tries to
solve :-)

-- 
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/
|cookedm at physics.mcmaster.ca



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