From 985fda8b8a0e649b68e42ad7ca5d4a6c894df178 Mon Sep 17 00:00:00 2001
From: Hood Chatham <roberthoodchatham@gmail.com>
Date: Sun, 20 Jul 2025 11:56:55 +0200
Subject: [PATCH] gh-136852: Emscripten: Add PYTHON_NODE_VERSION environment
 variable

To choose the node version we use. Together with:
https://github.com/python/buildmaster-config/pull/614
closes #136852.
---
 Tools/wasm/emscripten/__main__.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Tools/wasm/emscripten/__main__.py b/Tools/wasm/emscripten/__main__.py
index dc8422420a564c..24b989f75f7b2b 100644
--- a/Tools/wasm/emscripten/__main__.py
+++ b/Tools/wasm/emscripten/__main__.py
@@ -206,6 +206,17 @@ def configure_emscripten_python(context, working_dir):
         sysconfig_data += "-pydebug"
 
     host_runner = context.host_runner
+    if node_version := os.environ.get("PYTHON_NODE_VERSION", None):
+        res = subprocess.run(
+            [
+                "bash",
+                "-c",
+                f"source ~/.nvm/nvm.sh && nvm which {node_version}",
+            ],
+            text=True,
+            capture_output=True,
+        )
+        host_runner = res.stdout
     pkg_config_path_dir = (PREFIX_DIR / "lib/pkgconfig/").resolve()
     env_additions = {
         "CONFIG_SITE": config_site,