Augment Pyodide with pre-fetched packages details

Author: WebReflection

esm/interpreter/pyodide.js

@@ -75,7 +75,12 @@ export default {
     async engine({ loadPyodide, version }, config, url, baseURL) {
         progress('Loading Pyodide');
         let { packages, index_urls } = config;
-        if (packages) packages = packages.map(fixedRelative, baseURL);
+        if (packages) {
+            packages = packages.map(fixedRelative, baseURL);
+            progress('Loading Packages Graph');
+            await import(/* webpackIgnore: true */'./pyodide_graph.js');
+            progress('Loaded Packages Graph');
+        }
         progress('Loading Storage');
         const indexURL = url.slice(0, url.lastIndexOf('/'));
         // each pyodide version shares its own cache