GeezerVison

This change adds "Display build info" to the CI. Examples from this CI run on this PR:

• platform.platform: Emscripten-4.0.12
• sys._emscripten_info: Node.js/24

I'm surprised that sys._emscripten_info only logs Node.js major version. The code uses info = "Node.js ".concat(process.version); in Python/sysmodule.c, so I expected "Node.js xxx", but we get "Node.js/xxx", where does "/" come from? :-)

Log examples:

os.cpu_count: 1
os.environ[GITHUB_ACTIONS]: true
os.uname: posix.uname_result(sysname='Emscripten', nodename='emscripten', release='4.0.12', version='#1', machine='wasm32')

platform.freedesktop_os_release[NAME]: Ubuntu
platform.freedesktop_os_release[VERSION]: 24.04.3 LTS (Noble Numbat)

platform.libc_ver: emscripten 4.0.12
platform.platform: Emscripten-4.0.12-wasm32-32bit

support.has_fork_support: False
support.has_socket_support: False
support.has_subprocess_support: False
support.is_emscripten: True
support.is_wasi: False
support.is_wasm32: True

sys._emscripten_info: sys._emscripten_info(emscripten_version=(4, 0, 12), runtime='Node.js/24', pthreads=False, shared_memory=False)
sys.executable: /home/runner/work/cpython/cpython/cross-build/wasm32-emscripten/build/python/python.sh
sys.filesystem_encoding: utf-8/surrogateescape
sys.maxsize: 2147483647

sys.version: 3.15.0a7+ (remotes/pull/146332/merge-dirty:39b0363, Mar 23 2026, 16:44:40) [Clang 22.0.0git (https:/github.com/llvm/llvm-project 7f93487862d98bf1c168babba8

sysconfig[MULTIARCH]: wasm32-emscripten
sysconfig[SOABI]: cpython-315-wasm32-emscripten

Thanks @vstinner. Do you want to add this to the buildbot as well?

Yes, I would like to add this step to the buildbot as well. I will backport this change to 3.14, and then add a --pythoninfo step to the buildbot.

The code uses info = "Node.js ".concat(process.version); in Python/sysmodule.c, so I expected "Node.js xxx", but we get "Node.js/xxx", where does "/" come from? :-)

The other branch:

$ node -e 'console.log(navigator.userAgent)'
Node.js/24

I'll make a separate PR improving this.

Thanks @vstinner for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

Sorry, @vstinner, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker a57209eb98943f4d8edbf56a55e98ec112e00e39 3.14

The other branch:

Oh ok, thanks :-)

$ node -e 'console.log(navigator.userAgent)'
Node.js/24

Is there a way to get the full Node.js version? A version string like v22.22.0.

I'll make a separate PR improving this.

Improving sys._emscripten_info? Nice!

GH-146336 is a backport of this pull request to the 3.14 branch.

I merged my PR. Thanks for your fast reviews!

Here is the PR to run pythoninfo on buildbots: python/buildmaster-config#690.