Add Docker Images for Python 3.11, 3.12, 3.13, 3.14 on RISCV64 Architecture

[nakata5321]

Hello!

I noticed that RISCV64 has Docker images available only for older Alpine Linux versions of Python. However, newer versions 3.11, 3.12, 3.13, 3.14 are currently missing.

I would like to understand:

1. Why are newer versions not supported?
2. Are there any plans to add support?
3. What challenges are preventing implementation?

I have a computer running RISCV64, and I am willing to help with testing, building, or resolving potential issues.

I’d be happy to discuss how we can accelerate support for newer Python versions on this architecture.

Thank you!

[nakata5321]

I found this PR - #931
I suppose tests wasn't successful? because now i see that you exclude RISCV architecture here

[yosifkit]

It wasn't that the tests were unsuccessful, it is just too slow to build even with "enable-optimizations" disabled and even slower on each newer python major. On top of that, it is also that riscv64 isn't really supported by the Python project, so improving build speed on riscv64 is unlikely something they would do themselves and not something we can commit to contributing to them.

[ensrationis]

Hey! I'm part of @nakata5321's hardware team, and we’re really eager to build a fully open-source smart home server. RISC-V is clearly the only viable option for that today!

Is this mainly about improving build speed? I assume it’s quite challenging for third-party developers to change it, but maybe there's a way to work around it - building images more slowly but still making it work? :)

[tianon]

If you click @yosifkit's first link, you'll see "take more than 3 hours to build" -- unfortunately that's outside the realm of reasonable for us, so either we need to improve the speed of upstream's build or we need better hardware (and the long tail on each of those is unfortunately quite long).

[tuler]

In case anyone needs it, we maintain unofficial linux/riscv64 builds based on ubuntu 22.04 and 24.04.
https://hub.docker.com/r/cartesi/python/tags

[mmoll]

Would https://riscv.builders/ be of service here?

[mmoll]

While building around, I noticed the LTO step is taking up most of the time, #1038 would disable that.