klippy: python 3.13

[nefelim4ag]

Those are minimal that can be installed/built on Python 3.13. cffi 1.17.1 greenlet 3.1.1 # Depends on newer CFFI

This should help people with 3.13, from there: #6525

~~Greenlet 3.1.1 could possibly be reused on 3.12 with newer CFFI~~ - smoke test seems fine

Generally, I expect it would be helpful to have feedback that:

• ~~CAN still works on 3.13~~ - python-can seems to be only used in the canbus_query.py
• Klipper works as before with 3.12

[KevinOConnor]

Thanks for working on this. We can make this change if we need to. It is unfortunate that things break with seemingly every new Python release.

-Kevin

[nefelim4ag]

I still want someone to explicitly check on 3.12, that it still works. 3.13 works for me, and for the others I suspect too: https://klipper.discourse.group/t/python-3-13-not-supported-by-greenlet-v3-0-3/23132

Either way, PR could wait.

[KevinOConnor]

It seems to run on my Fedora desktop (at least enough to run the regression test cases): Python 3.12.10 (main, Apr 22 2025, 00:00:00) [GCC 14.2.1 20240912 (Red Hat 14.2.1-3)] on linux

I used a slightly different formatting:

--- a/scripts/klippy-requirements.txt
+++ b/scripts/klippy-requirements.txt
@@ -3,11 +3,12 @@
 # typically installed via the command:
 #   pip install -r klippy-requirements.txt
 
-# The 'cffi' package is used by the "chelper" code
-cffi==1.14.6
 # greenlet is used by the reactor.py code
 greenlet==2.0.2 ; python_version < '3.12'
-greenlet==3.0.3 ; python_version >= '3.12'
+greenlet==3.1.1 ; python_version >= '3.12'
+# cffi is used by "chelper" code and by greenlet
+cffi==1.14.6 ; python_version < '3.12'
+cffi==1.17.1 ; python_version >= '3.12'
 # Jinja2 is used by gcode_macro.py
 Jinja2==2.11.3
 markupsafe==1.1.1       # Needed by Jinja2

-Kevin

[KevinOConnor]

What is the status of this? Should this be merged?

Thanks, -Kevin

[nefelim4ag]

Yes, let's do.

Thanks.

[KevinOConnor]

Okay thanks. I made this change with slightly different file comments (commit 1af219fa).

-Kevin