Question about cysignals installation

[JC]

Dear Sage developers,

I'm trying to install the cysignals 1.11.2 package in Python 3.9.7 using pip (on a computer with macOS system and Apple M2 chip) and have already installed the prerequisite packages Cython and Sphinx, but still failed with some Cython compiling errors (please see the error message attached). Do you know what the problem might be and how I can fix it?

Thank you very much!

[Dima Pasechnik]

I think your cython is too new (3.0.0).

Cysignals has not been ported to it yet.

[Martin R. Albrecht]

FWIW this PR https://github.com/sagemath/cysignals/pull/174 does this porting, I think.

CI complaints but I don’t understand the complaint.

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[Dima Pasechnik]

this seems to be the CI  error, something with setuptools version

2023-08-04T14:47:05.9834230Z config.status: creating src/config.h

2023-08-04T14:47:06.0117040Z config.status: creating src/cysignals/cysignals_config.h

2023-08-04T14:47:06.0928570Z python3 -m pip -v install --no-index --ignore-installed --no-deps .

2023-08-04T14:47:06.5479190Z Using pip 23.2.1 from /Users/runner/hostedtoolcache/Python/3.10.12/x64/lib/python3.10/site-packages/pip (python 3.10)

2023-08-04T14:47:06.7102480Z Processing /Users/runner/work/cysignals/cysignals

2023-08-04T14:47:06.7169520Z Running command pip subprocess to install build dependencies

2023-08-04T14:47:06.7169990Z Installing build dependencies: started

2023-08-04T14:47:07.3324070Z ERROR: Could not find a version that satisfies the requirement setuptools>=40.8.0 (from versions: none)

2023-08-04T14:47:07.3326280Z ERROR: No matching distribution found for setuptools>=40.8.0

2023-08-04T14:47:07.4154720Z error: subprocess-exited-with-error

2023-08-04T14:47:07.4155590Z   

2023-08-04T14:47:07.4156570Z × pip subprocess to install build dependencies did not run successfully.

2023-08-04T14:47:07.4157390Z │ exit code: 1

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[JC]

Thanks for your replies! So is there a way to let cysignals use an older version of Cython?