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How to find existing deb package corresponding to PyPI entry? – Debian

PyPI has a lot of packages, and many of them do have deb-equivalents for specific Debian distributions. It usually happens by prepending python- or python3- to the name of the original package, possibly with some other changes like lowercasing, etc, but not always.

Is there are good way to establish PyPI -> Debian version X correspondence in an automatic way?

For example, given a requirements.txt file (or a result of running pip freeze), are there any tools to list Debian packages?

Maybe, there is some service, which can, given “PyPI name”, returns search result for Debian? I am not that familiar with Debian tools, but maybe there is a tool, which automates it as part of some process Debian uses?

For example: alembic package. Source package is a basis to create python-prefixed packages. And description points to where it was taken from. Then on PyPI there is a page for specific version files (and maybe a metadata description somewhere).

Can’t find it with googling as search results turn out a lot of how to do your very own package, which is a different topic.

The process so far is time-consuming and heavily manual, using apt-file search -l to query for packages containing certain files.

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2

Answers


  1. 0

    PyPI administrator here: to my knowledge there is no such tool. Python packages are often redistributed as Debian packages with little to no input from the original maintainers, and there is no guarantee of parity when this happens.

    I’d be curious why you’re preferring to use the redistributed Debian packages rather than the original Python packages. Perhaps this is an XY Problem?

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  2. 0

    Inspired by this answer: https://askubuntu.com/a/1912

    $ apt-file --package-only --regex search 'alembic-.*.egg-info'
python-alembic
python3-alembic
$ apt-file --package-only --regex search 'setuptools-.*.egg-info'
pypy-setuptools
python-setuptools
python3-setuptools

    Not sure about the regular expression, most likely it can be improved a lot.

    Short Python wrapper script as an example:

    import argparse
import subprocess

import pkg_resources  # from 'setuptools'


def _main():
    parser = argparse.ArgumentParser(allow_abbrev=False)
    parser.add_argument(
        'requirements',
        metavar='requirements.txt',
        type=argparse.FileType('r'),
    )
    args = parser.parse_args()
    #
    requirements = [
        requirement.project_name
        for requirement
        in pkg_resources.parse_requirements(args.requirements)
    ]
    print(requirements)
    #
    regex = r'({})-.*.egg-info'.format(
        '|'.join(
            [
                requirement.replace('-', '_')
                for requirement
                in requirements
            ],
        ),
    )
    #
    output = subprocess.check_output(
        [
            'apt-file',
            '--package-only',
            '--regex',
            'search',
            regex,
        ],
    )
    print(output.decode())


if __name__ == '__main__':
    _main()
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