Add riscv64 support for linux builds

[mliezun]

Hi!

Here's a patch that builds riscv64 binaries in Github actions.

The binary distribution facilitates the installation of psycopg2 as it avoids having to compile it each time that it gets installed.

Thank you for your review!

[dvarrazzo]

Hello,

there is a race condition in the creation of the libpq build: it is attempted to build once per Python version but it is independent from it; as a consequence it never gets cached and your test will always take 2 hours to run. The issue was solved in psycopg 3 (psycopg/psycopg@e11da8ae). Do you want to try and backport this solution?

[dvarrazzo]

Do you want to propose a similar MR for psycopg 3 or should I do it myself? The build script is pretty much the same (but with the care to run it only once for every Python release).

[mliezun]

Do you want to propose a similar MR for psycopg 3 or should I do it myself? The build script is pretty much the same (but with the care to run it only once for every Python release).

Thanks for your review @dvarrazzo.

I'll create a new PR for psycopg 3 😉

[dvarrazzo]

Thank you for sorting over this workflow! There are some details to adapt to pg2 :)

[mliezun]

Thank you for sorting over this workflow! There are some details to adapt to pg2 :)

Of course! Sorry for missing those details 😅

[dvarrazzo]

Hello,

the PR seems in good shape, but I don't see a package workflow completed. Please let me know if you manage to make one.

Also please squash the branch in a single commit or in a few meaningful one: the way you did it the PG3 PR is perfect, including the commit messages 💜

Let me know when we are ready to merge. I will rebuild the packages on the official side and can release them immediately (for psycopg 3 they will be released with 3.3.0, which should happen soon).

[mliezun]

Hello,

the PR seems in good shape, but I don't see a package workflow completed. Please let me know if you manage to make one.

Also please squash the branch in a single commit or in a few meaningful one: the way you did it the PG3 PR is perfect, including the commit messages 💜

Let me know when we are ready to merge. I will rebuild the packages on the official side and can release them immediately (for psycopg 3 they will be released with 3.3.0, which should happen soon).

Hi Daniele!

I squashed the PR into a single commit ✅

Also, the build packages workflow has completed successfully, see here: https://github.com/mliezun/psycopg2/actions/runs/18902919058

I think this is ready to merge 🚀

[dvarrazzo]

Looks good! Let's merge.

[dvarrazzo]

riscv64 packages released 👍

[mliezun]

Thanks @dvarrazzo!!