Mailman 3 February 2007 - Distutils-SIG

Optional C extensions in packages
by Phillip J. Eby 02 Feb '07

02 Feb '07

I'm thinking setuptools should allow you to specify that one or more C extensions in a project are optional. At minimum, there would then be a command-line option you could give to easy_install to say, "don't build any optional extensions", so if you don't have a compiler or need a cross-platform egg, you can skip those extensions. There would also need to be a way to specify this when using the regular build commands. This feature would address projects that include optional C versions of certain code, that can fall back to pure Python implementations. It would not address projects that have C extensions requiring external libraries that might or might not exist. (Such as Twisted, for instance, but Twisted falls into the category of projects requiring "extreme measures" to be supported anyway.) Comments, anyone?

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Re: [Distutils] parallel package
by Phillip J. Eby 02 Feb '07

02 Feb '07

At 02:09 AM 2/2/2007 +0100, =?ISO-8859-2?Q?Micha=B3_Kwiatkowski?= wrote: >Going here works: http://python.org/pypi/parallel/0.2.1 . > >Doing this doesn't: > >$ easy_install parallel==0.2.1 >Searching for parallel==0.2.1 >Reading http://cheeseshop.python.org/pypi/parallel/ >Reading http://cheeseshop.python.org/pypi/parallel/0.2.3 >No local packages or download links found for parallel==0.2.1 >error: Could not find suitable distribution for >Requirement.parse('parallel==0.2.1') easy_install -f http://python.org/pypi/parallel/0.2.1 parallel==0.2.1

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parallel package
by Michał Kwiatkowski 02 Feb '07

02 Feb '07

Hi, I'm not able to install parallel version 0.2.1, although it is visible and accessible from PyPI. What can be the cause? Going here works: http://python.org/pypi/parallel/0.2.1 . Doing this doesn't: $ easy_install parallel==0.2.1 Searching for parallel==0.2.1 Reading http://cheeseshop.python.org/pypi/parallel/ Reading http://cheeseshop.python.org/pypi/parallel/0.2.3 No local packages or download links found for parallel==0.2.1 error: Could not find suitable distribution for Requirement.parse('parallel==0.2.1') I'm using setuptools 0.6c5 on Python 2.4 (which I've learned by browsing easy_install source code; IMHO easy_install should support --version option). Cheers, mk

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setuptools problem?
by Thomas Heller 01 Feb '07

01 Feb '07

Philip, I was trying to install yolk with c:\python25\python -m easy_install yolk (on Windows, as you can see). A yolk.py script is installed in c:\Python25\Scripts, but between each source line there is an empty line. In other words, line feeds are doubled each time. This leads to syntax errors because continuation lines don't work any longer. It seems easy_install gets the newlines wrong. Thanks, Thomas PS: This is not the first time I had strange problems with Scripts in distributions installed by easy_install, but it is the first time I'm reporting it.

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setupegg.py omits important file
by Chris Fonnesbeck 01 Feb '07

01 Feb '07

I have built a matplotlib installer for OS X, using setupegg.py: python setupegg.py config -L../staticlibs build bdist_mpkg However, when I import the module after installing, I get the follwing: ImportError: No module named matplotlib.pylab The problem appears to be that the module's __init__.py is not included in the package; when I do a standard install using setup.py, the file is copied over as it should be. Another oddity is that this only happens on my Intel Mac; it seems to work fine on PPC. Any advice on this is appreciated. -- Chris Fonnesbeck + Atlanta, GA + http://trichech.us

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Distutils-SIG February 2007