CODEWITHSUNDEEP
pipsetuptoolssetup.pypython-packaging
guillaumekln
guillaumekln

Reputation: 504

How to specify a minimum pip version with a dependency specification?

PEP 508 describes how to set additional specifications for dependencies. This can be used for example to specify that a dependency should only be installed on Linux systems.

Is there any way to use this syntax to specify a minumum pip version for a package?

My use case: one dependency is built with manylinux2010 and requires pip >= 19.0. I would like the dependency to be installed when pip >= 19.0, and ignored otherwise. This is different from Include minimum pip version in setup.py where the author wants to restrict the pip version for the whole project.

Thanks!

Upvotes: 0

Views: 199

Answers (2)

sinoroc
sinoroc

Reputation: 22275

You could make an ugly hack like this in setup.py:

import pkg_resources
import setuptools

install_requires = [
    # ...
]

try:
    pip_dist = pkg_resources.get_distribution('pip')
except:
    pass
else:
    if pip_dist.parsed_version > pkg_resources.parse_version('19'):
        install_requires.append('Library')

setuptools.setup(
    # ...
    install_requires=install_requires,
)

This is written off the top of my head (pseudo code), untested, tweaking will most likely be required.

I definitely would not recommend doing this, this has lots of red flags, goes against many best practice recommendations.

Most importantly the condition on pip's version number will not be respected as soon as build isolation is involved or if installing from a wheel (wheels do not contain the setup.py file).

Upvotes: 1

XAMES3
XAMES3

Reputation: 139

In your setup.py, add the below snippet before anything.

Code:

import pip

if pip.__version__ < '19':
    raise RuntimeError('Required pip>=19.0 to install')

import spam
import foo
...
...
setup(...)

This will check if the pip dependency is maintained or not.

Upvotes: 0

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