pip-reqs broken by pip 25.1

[Scotchester]

I couldn't find a dedicated repo for pip-reqs, which appears to be a Divio project (based on its PyPI page), so this seemed like the next best place to report this.

Today when I tried to rebuild my app image which is based on divio/base:1.2-py3.12-slim-bookworm and includes RUN pip install --upgrade pip in its Dockerfile, I got this error on the pip-reqs step:

 => ERROR [web 7/9] RUN pip-reqs compile &&     pip-reqs resolve &&     pip install         --n  0.8s 
------                                                                                                
 > [web 7/9] RUN pip-reqs compile &&     pip-reqs resolve &&     pip install         --no-index --no-deps         --no-build-isolation         --requirement requirements.urls:                             
0.702 Traceback (most recent call last):                                                              
0.702   File "/usr/local/bin/pip-reqs", line 8, in <module>                                           
0.702     sys.exit(main())
0.703              ^^^^^^
0.703   File "/usr/local/lib/python3.12/site-packages/pip_reqs/__main__.py", line 50, in main
0.703     args.func(client, args)
0.703   File "/usr/local/lib/python3.12/site-packages/pip_reqs/__main__.py", line 55, in compile
0.703     parser = RequirementsParser(req_tracker=req_tracker, index_url=client.index_url)
0.703              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
0.703   File "/usr/local/lib/python3.12/site-packages/pip_reqs/parser.py", line 26, in __init__
0.703     self.preparer = get_requirement_preparer(self.finder, self.session, req_tracker)
0.703                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
0.703   File "/usr/local/lib/python3.12/site-packages/pip_reqs/compat.py", line 119, in get_requirement_preparer
0.703     preparer = RequirementPreparer(
0.703                ^^^^^^^^^^^^^^^^^^^^
0.704 TypeError: RequirementPreparer.__init__() missing 1 required positional argument: 'resume_retries'
------
failed to solve: process "/bin/sh -c pip-reqs compile &&     pip-reqs resolve &&     pip install         --no-index --no-deps         --no-build-isolation         --requirement requirements.urls" did not complete successfully: exit code: 1

A little searching around led me to realize that:

• The RequirementPreparer class comes from pip itself
• pip 25.1 was released about a week ago
• This change was introduced:

  Add support to enable resuming incomplete downloads. Control the number of retry attempts using the --resume-retries flag. (#12991)

• That is a new required argument when initializing a RequirementPreparer

So I think that something in pip-reqs needs updating to include that new required argument? Seems they didn't consider that third-party projects like pip-reqs might be using RequirementPreparer directly.