Expose version information in javascript

.circleci/deploy.sh

@@ -8,7 +8,7 @@ git add *
 git config --global user.email "deploybot@nowhere.com"
 git config --global user.name "Deploybot"
 git commit -m << END
-Deployed from Circle-CI $CIRCLE_BUILD_NUM"
+Deployed from Circle-CI $CIRCLE_BUILD_NUM
 
 Version $(git describe --tags --always)
 END

Makefile

@@ -162,7 +162,8 @@ root/.built: \
 	cp src/pyodide.py root/lib/python$(PYMINOR)/site-packages
 	if command -v git > /dev/null 2>&1 \
 			&& git describe --tags > /dev/null 2>&1; then \
-	sed -i "s/__version__ =.*/__version__ = '$(shell git describe --tags)'/g" root/lib/python$(PYMINOR)/site-packages/pyodide.py; \
+	sed -i "s/__version__ =.*/__version__ = '$(shell git describe --tags)'/g" \
+		root/lib/python$(PYMINOR)/site-packages/pyodide.py; \
 	fi
 	( \
 		cd root/lib/python$(PYMINOR); \

src/main.c

@@ -48,7 +48,7 @@ main(int argc, char** argv)
 
   if (js2python_init() || JsImport_init() || JsProxy_init() ||
       pyimport_init() || pyproxy_init() || python2js_init() ||
-      runpython_init_js() || runpython_init_py()) {
+      runpython_init_js() || runpython_init_py() || runpython_finalize_js()) {
     return 1;
   }
 

src/runpython.c

@@ -68,3 +68,12 @@ runpython_init_py()
   Py_DECREF(d);
   return 0;
 }
+
+EM_JS(int, runpython_finalize_js, (), {
+  Module.version = function()
+  {
+    Module.runPython("import pyodide");
+    return Module.runPython("pyodide.__version__");
+  };
+  return 0;
+});

src/runpython.h

@@ -10,4 +10,7 @@ runpython_init_js();
 int
 runpython_init_py();
 
+int
+runpython_finalize_js();
+
 #endif /* RUNPYTHON_H */

test/test_python.py

@@ -2,7 +2,6 @@ import os
 from pathlib import Path
 import time
 
-
 import pytest
 
 
@@ -391,3 +390,19 @@ def test_load_package_after_convert_string(selenium):
     selenium.load_package('kiwisolver')
     selenium.run(
         "import kiwisolver")
+
+
+def test_version_info(selenium):
+    from distutils.version import LooseVersion
+
+    version_py_str = selenium.run("""
+            import pyodide
+
+            pyodide.__version__
+            """)
+    version_py = LooseVersion(version_py_str)
+    assert version_py > LooseVersion('0.0.1')
+
+    version_js_str = selenium.run_js("return pyodide.version()")
+    version_js = LooseVersion(version_js_str)
+    assert version_py == version_js