A Python dependency resolver

Filipe Laíns

Last update: Jun 29, 2022

Related tags

GraphQL python-resolver

Overview

python-resolver

A Python dependency resolver.

Issues

Only supports wheels (no sdists!)

Usage

Python library

import packaging.requirements
import resolvelib
import resolver


resolver = resolvelib.Resolver(
    resolver.Provider(),
    resolvelib.BaseReporter(),
)
resolver.resolve({
    packaging.requirements.Requirement('trampolim==0.0.2'),
})

Resolver CLI

$ python -m resolver build
--- Pinned Candidates ---
build: build 0.3.1.post1
pep517: pep517 0.10.0
toml: toml 0.10.2
packaging: packaging 20.9
pyparsing: pyparsing 2.4.7

--- Dependency Graph ---
pep517 -> toml
(root) -> build
build -> pep517, toml, packaging
pyparsing ->
toml ->
packaging -> pyparsing

`mindeps` CLI

resolver.mindeps will resolve the dependency tree for the minimum supported version. This is useful when you want to for eg. test your software against the minimum version of the dependencies that it claims to support.

It can work on projects directly, or on requirement strings, like the normal CLI. If no argument is provided, it will try to resolve the dependencies for the current project. If arguments are provided, it will treat them as requirement strings and resolve them instead, like the normal CLI. Unlike the normal CLI, the output will be a list of requirement strings that pins the dependency versions.

For resolving the current project, the python-resolver[mindeps] extra needs to be installed.

$ python -m resolver.mindeps
resolvelib==0.7.0
importlib-metadata==3.2.0
mousebender==2.0.0
zipp==0.5.0
attrs==19.3.0
packaging==20.3
pyparsing==2.0.3
six==1.5.0

$ python -m resolver.mindeps build==0.3.0
build==0.3.0
pep517==0.9.1
toml==0.9.6
packaging==14.0

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Comments

pre-commit: bump repositories
updates:

github.com/pre-commit/pre-commit-hooks: v3.4.0 → v4.0.1

github.com/PyCQA/isort: 5.7.0 → 5.9.3

github.com/asottile/setup-cfg-fmt: v1.16.0 → v1.17.0

github.com/PyCQA/flake8: 3.8.4 → 3.9.2
opened by pre-commit-ci[bot] 0

Trouble installing the `mindeps` tool

First of all, I'm not a Python guy, so sorry if I'm asking stupid questions 😉 I'm looking at using this tool in the ORT Analyzer to list a Python project's (no matter whether defined by a setup.py or a requirements.txt) transitive dependencies and their metadata without actually building the Python project.

The mindeps CLI seems to be suitable for that, but I'm having trouble installing it. I tried this on Ubuntu 18.04 LTS with both Python 2.7 and Python 3.6, but in both cases I'm getting resolver 0.2.1 does not provide the extra 'mindeps':

$ pip install resolver[mindeps]
WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: resolver[mindeps] in /home/user/.local/lib/python2.7/site-packages (0.2.1)
  WARNING: resolver 0.2.1 does not provide the extra 'mindeps'

$ pip3 install resolver[mindeps]
Collecting resolver[mindeps]
  resolver 0.2.1 does not provide the extra 'mindeps'
Installing collected packages: resolver
Successfully installed resolver-0.2.1

Any hints how to install the mindeps CLI porperly?

opened by sschuberth 0

Move mindeps generation logic to separate function

from resolver.mindeps import get_min_deps

requirements = ['importlib-metadata>=3.2.0', "pytest>=4 ; extra == 'test'", "pytest-cov>=2 ; extra == 'test'"]
min_deps = get_min_deps(requirements)

print(min_deps)

opened by Shivansh-007 0

A Python dependency resolver

Related tags

Overview

python-resolver

Issues

Usage

Python library

Resolver CLI

mindeps CLI

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Comments

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Owner

Filipe Laíns

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`mindeps` CLI