BUG: Backend dependency installation fails on Windows (scipy==1.14.0)

[Jayyadav1903]

Is there an existing issue for this?

• I have searched the existing issues

What happened?

Environment:

• OS: Windows
• Python: 3.9.13
• pip: 22.0.4

Problem:
While setting up the backend and running:
pip install -r requirements.txt

The installation fails with the following error:
ERROR: No matching distribution found for scipy==1.14.0

It appears that scipy==1.14.0 is not available for Python 3.9 on Windows, which blocks backend setup for contributors on this platform.

Expected behavior:
Backend dependencies should install successfully on supported platforms without manual intervention.

Suggestion:
Either relax the scipy version constraint or explicitly document the required Python version for backend development.

Related:
Issue #1055 mentions missing documentation for supported Python versions, but this issue specifically concerns a backend dependency incompatibility that prevents installation.

Record

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[github-actions]

👋 Thanks for opening this issue! The maintainers will review it shortly. Till then, do not open any PR. This is a strict rule we like to follow around here :)

[Jayyadav1903]

I can work on fixing this once it’s reviewed and labeled.
Please let me know if that’s okay.

[AbhayXplorer]

Hello I’m interested in working on this issue as part of my open-source contribution.
Could you please assign this issue to me?

[ionfwsrijan]

@rahul-vyas-dev
Hi there,

I’m Srijan Jaiswal, and I’m eager to contribute to this project as part of my open-source contribution. I have reviewed this issue and feel confident that I can provide a solution since I have experience working with similar technologies in my past projects. Could you please assign this issue to me? I’d love to work on it and contribute to the project.

Best regards,
Srijan Jaiswal

[rahul-vyas-dev]

hello @Jayyadav1903 this is clearly mentioned in docs/Manual_Setup_Guide.md that you have to create a venv using conda then how??

[Jayyadav1903]

@rahul-vyas-dev
Creating a conda environment only isolates dependencies; it does not change pip’s availability of prebuilt wheels.
Even inside a conda venv, running pip install -r requirements.txt fails on Windows with Python 3.9 because scipy==1.14.0 has no compatible wheel.
If the intended setup is to install SciPy via conda-forge or to use a different Python version, that needs to be explicitly documented. Otherwise, the current setup instructions are not reproducible on Windows.

[Jayyadav1903]

@ionfwsrijan
Hi Srijan, I am not the maintainer for this issue and I raised it to work on it myself.

[rahul-vyas-dev]

@rahul-vyas-dev Creating a conda environment only isolates dependencies; it does not change pip’s availability of prebuilt wheels. Even inside a conda venv, running pip install -r requirements.txt fails on Windows with Python 3.9 because scipy==1.14.0 has no compatible wheel. If the intended setup is to install SciPy via conda-forge or to use a different Python version, that needs to be explicitly documented. Otherwise, the current setup instructions are not reproducible on Windows.

conda install -c conda-forge scipy=1.14.0

[ionfwsrijan]

@rahul-vyas-dev mind assigning me the issue ill help you with it?