`npm run build`

lib/analyze.js

@@ -50,6 +50,7 @@ async function setupPythonExtractor(logger) {
         // If CODEQL_PYTHON is not set, no dependencies were installed, so we don't need to do anything
         return;
     }
+    const scriptsFolder = path.resolve(__dirname, "../python-setup");
     let output = "";
     const options = {
         listeners: {
@@ -58,10 +59,7 @@ async function setupPythonExtractor(logger) {
             },
         },
     };
-    await new toolrunner.ToolRunner(codeqlPython, [
-        "-c",
-        "import os; import pip; print(os.path.dirname(os.path.dirname(pip.__file__)))",
-    ], options).exec();
+    await new toolrunner.ToolRunner(codeqlPython, [path.join(scriptsFolder, "find_site_packages.py")], options).exec();
     logger.info(`Setting LGTM_INDEX_IMPORT_PATH=${output}`);
     process.env["LGTM_INDEX_IMPORT_PATH"] = output;
     output = "";