Re: Converting PyPI to feeds

Hi Tim,

 

this sounds very interesting! Unfortunately I do not have much Python expertise, so I probably cannot offer any valuable feedback on the nuts and bolts of the design.

 

Do you plan on publicly hosting the feeds your converter generates? This would seem to be somewhat similar in spirit to my Maven-to-ZeroInstall webservice hosted at http://maven.0install.net/ . Perhaps a directory of bindings between Zero Install and other package managers would be in order (hoping the number increases :) ).

 

Regards

Bastian

 

From: Tim Diels [mailto:[email protected]] 
Sent: Samstag, 18. Februar 2017 00:18
To: The Zero Install system <[email protected]>
Subject: Re: [Zero-install-devel] Converting PyPI to feeds

 

I've made a draft on how to convert PyPI packages to ZI feeds (most of the documentation section):

 

https://github.com/timdiels/pypi-to-0install#documentation

 

I'd appreciate any comments/review of it before going ahead and implementing it. This approach assumes setup.py has the typical interface that setuptools.setup would, no need for docker this way.

 

On Wed, Feb 1, 2017 at 5:14 PM, Tim Diels <[email protected] <mailto:[email protected]> > wrote:

Dear all,

 

I'm considering automatically converting the Python packages listed in the Python Packaging Index (PyPI) to Zero Install feeds; Python packaging has a few problems which Zero Install would solve. One main issue with this is that Python packages are installed by executing a package's setup.py script. While this file usually is implemented by calling setuptools.setup, this is not always the case.

 

One approach would be to convert them to source packages. Its compilation step would call setup.py and the changes it makes to the system would be recorded; just like an AUR package would. Then, a build server should compile these source packages into binary packages. By default, the build server assumes the binary package will work on any system. This assumption can be corrected later, for individual source packages, by manually specifying a list of environments to build in/for. Alternatively, if Zero Install can conveniently install something with source dependencies these days, it might be better not to automatically generate binary packages.

 

Has anyone else looked into doing this? Any suggestions?

 

Best regards,

 

Tim

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