Add autoinstaller for python deps

lib/setup-tracer.js

@@ -10,6 +10,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const exec = __importStar(require("@actions/exec"));
 const io = __importStar(require("@actions/io"));
+const toolcache = __importStar(require("@actions/tool-cache"));
 const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
 const analysisPaths = __importStar(require("./analysis-paths"));
@@ -121,6 +122,33 @@ function concatTracerConfigs(configs) {
     fs.writeFileSync(envPath, buffer);
     return { env, spec };
 }
+async function installPythonDeps(codeql) {
+    core.startGroup('Setup Python dependencies');
+    let scriptsFolder = '';
+    try {
+        const repoPath = await toolcache.downloadTool('https://github.com/github/codeql-python-autobuild-playground/archive/master.zip');
+        const extracted = await toolcache.extractZip(repoPath);
+        scriptsFolder = path.join(extracted, 'codeql-python-autobuild-playground-master');
+    }
+    catch (e) {
+        // The download should not fail, but in case it fails we just abort trying to setup the python deps
+        core.warning('Unable to download and extract the scripts needed for installing the python dependecies');
+        return;
+    }
+    // Setup tools
+    try {
+        await exec.exec(path.join(scriptsFolder, 'install_tools.sh'));
+    }
+    catch (e) {
+        // This script tries to install some needed tools in the runner. It should not fail, but if it does
+        // we just abort the process without failing the action
+        core.warning('Unable to download and extract the scripts needed for installing the python dependecies');
+        return;
+    }
+    // Install dependencies
+    await exec.exec(path.join(scriptsFolder, 'auto_install_packages.py'), [codeql.getDir()]);
+    core.endGroup();
+}
 async function run() {
     let config;
     let codeql;
@@ -150,6 +178,10 @@ async function run() {
             core.exportVariable('GOFLAGS', goFlags);
             core.warning("Passing the GOFLAGS env parameter to the init action is deprecated. Please move this to the analyze action.");
         }
+        const setupPythonDependencies = core.getInput('setup-python-dependencies', { required: true });
+        if (config.languages.includes('python') && setupPythonDependencies === 'true') {
+            await installPythonDeps(codeql);
+        }
         // Setup CODEQL_RAM flag (todo improve this https://github.com/github/dsp-code-scanning/issues/935)
         const codeqlRam = process.env['CODEQL_RAM'] || '6500';
         core.exportVariable('CODEQL_RAM', codeqlRam);