Hi,
how is your Sagemath installed?
I suppose this is related to testing
https://github.com/sagemath/cypari2/pull/180 - let's discuss there.
I'm currently also trying to test this PR locally.

Dima

On Mon, Jul 14, 2025 at 7:08 AM Risan <ptrrs...@gmail.com> wrote:
>
> Dear sage-devel,
>
> I am attempting to test a cypari2 change 
> (https://github.com/sagemath/cypari2/pull/180), which involves changing the 
> Gen structure, on Sagemath. A simple:
>
> sage -pip install ~/cypari2
>
> did not work as it was causing the following error:
>
> <frozen importlib._bootstrap>:488: RuntimeWarning: cypari2.gen.Gen size 
> changed, may indicate binary incompatibility. Expected 56 from C header, got 
> 64 from PyObject
>
> when running:
>
> sage -c "import cypari2"
>
> However, I did not get the same warning when using a normal non-sage pip 
> install.
>
> Could anyone help point me to the right way to do this instead?
>
> Thank you in advance.
>
> --
> Best regards,
> Risan
>
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