Question about Pip Distribution Etiquette

[Andrew Frances]

Hi Folks:

I am using a package that is not installed using pip. The application uses Cython. I want to install this package on Heroku. Heroku recommends that anything that can be installed by pip, is okay. I have asked the owners if they can create a version installed by pip. I have not received an answer. I have not tried my hand at making a pipable distribution before. I am starting to read up on this. How should I proceed? For example, can I have pip grab from a private repository?

Cheers,

Andrew

[Frédéric Osterrath]

Hi Andrew,

You can point pip at a repo but that repo needs to have a valid setup.py file at top level that essentially defines how pip should handle the installation.

I'd recommend forking and creating a setup.py . If it works you can send a pull request to the authors...

Cheers,

Fred.

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[Mathieu Longtin]

If it has a setup.py, you can install it using pip. If it doesn't have a setup.py, that should be easy enough to create.

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Mathieu Longtin

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[Ronan Jouchet]

The PyPA-maintained Python Packaging User Guide should help.

Ronan

[Andrew Frances]

Hi Matthieu and Folks:

The package has a setup.py. However there are additional setups done manually like compiling a C library and installing cython. Should I be modifying the existing setup.py?

Right now, I'll look up how to set up a repo. Any advice would be appreciated.

Cheers,

Andrew

2016-04-08 14:55 GMT-04:00 Mathieu Longtin <mat...@closetwork.org>:

[Andrew Frances]

Hi Frederic and Ronan:

Thanks for the advice. I am new to this so I'll look up how to set up a repo.

Cheers,

Andrew

[Leif Halldór Ásgeirsson]

Cython should be installed as a dependency

[Mathieu Longtin]

In that case, make a wheel: pip wheel  --wheel-dir /path/to/dest/dir    /path/to/your/package 

After that, you can distribute the wheel and install it using pip.

[Leif Halldór Ásgeirsson]

Sorry, accidentally hit the send button early on my touch screen.

Cython should be installed as a dependency by pip. If it isn't, it should be added to the install_requires argument to the setup function.

[Andrew Frances]

Hi Matthieu:

Let me read up more on wheel. At some point, don't I have to put the repo somewhere that can be reached by a Heroku buildpack (cedar)? And

once that is working, tell the original folks about the work done?

Cheers,

Andrew

[Andrew Frances]

Hi Leif:

Thanks for the head's up.

Cheers,

Andrew

[Frédéric Osterrath]

Andrew,

Just as a side note; compiling C extensions that Cython needs can (and probably should) be defined in the setup.py as well. See:

http://docs.cython.org/src/reference/compilation.html#compiling-with-distutils

Of course there might also be valid reasons for not having included the compilation directives in the setup file.

Cheers,