messing with chrome install process to reuse cached chromium with pinned version

archivebox/plugins/chrome/chrome_utils.js

@@ -433,6 +433,103 @@ async function killChrome(pid, outputDir = null) {
     console.error('[*] Chrome process killed');
 }
 
+/**
+ * Install Chromium using @puppeteer/browsers programmatic API.
+ * Uses puppeteer's default cache location, returns the binary path.
+ *
+ * @param {Object} options - Install options
+ * @returns {Promise<Object>} - {success, binary, version, error}
+ */
+async function installChromium(options = {}) {
+    // Check if CHROME_BINARY is already set and valid
+    const configuredBinary = getEnv('CHROME_BINARY');
+    if (configuredBinary && fs.existsSync(configuredBinary)) {
+        console.error(`[+] Using configured CHROME_BINARY: ${configuredBinary}`);
+        return { success: true, binary: configuredBinary, version: null };
+    }
+
+    // Try to load @puppeteer/browsers from NODE_MODULES_DIR or system
+    let puppeteerBrowsers;
+    try {
+        if (process.env.NODE_MODULES_DIR) {
+            module.paths.unshift(process.env.NODE_MODULES_DIR);
+        }
+        puppeteerBrowsers = require('@puppeteer/browsers');
+    } catch (e) {
+        console.error(`[!] @puppeteer/browsers not found. Install it first with installPuppeteerCore.`);
+        return { success: false, error: '@puppeteer/browsers not installed' };
+    }
+
+    console.error(`[*] Installing Chromium via @puppeteer/browsers...`);
+
+    try {
+        const result = await puppeteerBrowsers.install({
+            browser: 'chromium',
+            buildId: 'latest',
+        });
+
+        const binary = result.executablePath;
+        const version = result.buildId;
+
+        if (!binary || !fs.existsSync(binary)) {
+            console.error(`[!] Chromium binary not found at: ${binary}`);
+            return { success: false, error: `Chromium binary not found at: ${binary}` };
+        }
+
+        console.error(`[+] Chromium installed: ${binary}`);
+        return { success: true, binary, version };
+    } catch (e) {
+        console.error(`[!] Failed to install Chromium: ${e.message}`);
+        return { success: false, error: e.message };
+    }
+}
+
+/**
+ * Install puppeteer-core npm package.
+ *
+ * @param {Object} options - Install options
+ * @param {string} [options.npmPrefix] - npm prefix directory (default: DATA_DIR/lib/<arch>/npm or ./node_modules parent)
+ * @param {number} [options.timeout=60000] - Timeout in milliseconds
+ * @returns {Promise<Object>} - {success, path, error}
+ */
+async function installPuppeteerCore(options = {}) {
+    const arch = `${process.arch}-${process.platform}`;
+    const defaultPrefix = path.join(getEnv('LIB_DIR', getEnv('DATA_DIR', '.')), 'npm');
+    const {
+        npmPrefix = defaultPrefix,
+        timeout = 60000,
+    } = options;
+
+    const nodeModulesDir = path.join(npmPrefix, 'node_modules');
+    const puppeteerPath = path.join(nodeModulesDir, 'puppeteer-core');
+
+    // Check if already installed
+    if (fs.existsSync(puppeteerPath)) {
+        console.error(`[+] puppeteer-core already installed: ${puppeteerPath}`);
+        return { success: true, path: puppeteerPath };
+    }
+
+    console.error(`[*] Installing puppeteer-core to ${npmPrefix}...`);
+
+    // Create directory
+    if (!fs.existsSync(npmPrefix)) {
+        fs.mkdirSync(npmPrefix, { recursive: true });
+    }
+
+    try {
+        const { execSync } = require('child_process');
+        execSync(
+            `npm install --prefix "${npmPrefix}" puppeteer-core`,
+            { encoding: 'utf8', timeout, stdio: ['pipe', 'pipe', 'pipe'] }
+        );
+        console.error(`[+] puppeteer-core installed successfully`);
+        return { success: true, path: puppeteerPath };
+    } catch (e) {
+        console.error(`[!] Failed to install puppeteer-core: ${e.message}`);
+        return { success: false, error: e.message };
+    }
+}
+
 // Try to import unzipper, fallback to system unzip if not available
 let unzip = null;
 try {
@@ -932,78 +1029,88 @@ function getExtensionTargets(browser) {
 
 /**
  * Find Chromium/Chrome binary path.
- * Prefers Chromium over Chrome because Chrome 137+ removed --load-extension support.
+ * Checks CHROME_BINARY env var first, then falls back to system locations.
  *
- * @param {string} [dataDir] - Data directory to check for puppeteer installs
  * @returns {string|null} - Absolute path to browser binary or null if not found
  */
-function findChromium(dataDir = null) {
+function findChromium() {
-    // Check CHROME_BINARY env var first
+    const { execSync } = require('child_process');
-    const chromeBinary = (process.env.CHROME_BINARY || '').trim();
+
-    if (chromeBinary && fs.existsSync(chromeBinary)) {
+    // Helper to validate a binary by running --version
-        // Ensure absolute path
+    const validateBinary = (binaryPath) => {
-        return path.resolve(chromeBinary);
+        if (!binaryPath || !fs.existsSync(binaryPath)) return false;
+        try {
+            execSync(`"${binaryPath}" --version`, { encoding: 'utf8', timeout: 5000, stdio: 'pipe' });
+            return true;
+        } catch (e) {
+            return false;
+        }
+    };
+
+    // 1. Check CHROME_BINARY env var first
+    const chromeBinary = getEnv('CHROME_BINARY');
+    if (chromeBinary) {
+        const absPath = path.resolve(chromeBinary);
+        if (validateBinary(absPath)) {
+            return absPath;
+        }
+        console.error(`[!] Warning: CHROME_BINARY="${chromeBinary}" is not valid`);
+    }
+
+    // 2. Warn that no CHROME_BINARY is configured, searching fallbacks
+    if (!chromeBinary) {
+        console.error('[!] Warning: CHROME_BINARY not set, searching system locations...');
     }
 
     // Helper to find Chromium in @puppeteer/browsers directory structure
-    // Always returns absolute paths
     const findInPuppeteerDir = (baseDir) => {
-        const absBaseDir = path.resolve(baseDir);
+        if (!fs.existsSync(baseDir)) return null;
-        if (!fs.existsSync(absBaseDir)) return null;
         try {
-            const versions = fs.readdirSync(absBaseDir);
+            const versions = fs.readdirSync(baseDir);
             for (const version of versions.sort().reverse()) {
-                const versionDir = path.join(absBaseDir, version);
+                const versionDir = path.join(baseDir, version);
-                // Check for macOS ARM structure
+                const candidates = [
-                const macArmBinary = path.join(versionDir, 'chrome-mac/Chromium.app/Contents/MacOS/Chromium');
+                    path.join(versionDir, 'chrome-mac-arm64/Chromium.app/Contents/MacOS/Chromium'),
-                if (fs.existsSync(macArmBinary)) return macArmBinary;
+                    path.join(versionDir, 'chrome-mac/Chromium.app/Contents/MacOS/Chromium'),
-                // Check for macOS x64 structure
+                    path.join(versionDir, 'chrome-mac-x64/Chromium.app/Contents/MacOS/Chromium'),
-                const macX64Binary = path.join(versionDir, 'chrome-mac-x64/Chromium.app/Contents/MacOS/Chromium');
+                    path.join(versionDir, 'chrome-linux64/chrome'),
-                if (fs.existsSync(macX64Binary)) return macX64Binary;
+                    path.join(versionDir, 'chrome-linux/chrome'),
-                // Check for Linux structure
+                ];
-                const linuxBinary = path.join(versionDir, 'chrome-linux/chrome');
+                for (const c of candidates) {
-                if (fs.existsSync(linuxBinary)) return linuxBinary;
+                    if (fs.existsSync(c)) return c;
+                }
             }
-        } catch (e) {
+        } catch (e) {}
-            // Continue
-        }
         return null;
     };
 
-    // Check @puppeteer/browsers install locations
+    // 3. Search fallback locations (Chromium first, then Chrome)
-    const puppeteerDirs = [
+    const fallbackLocations = [
-        // Local project install (from npx @puppeteer/browsers install)
+        // System Chromium
-        path.join(dataDir || process.env.DATA_DIR || '.', 'chromium'),
+        '/Applications/Chromium.app/Contents/MacOS/Chromium',
-        path.join(process.cwd(), 'chromium'),
-        // User cache locations
-        path.join(process.env.HOME || '', '.cache/puppeteer/chromium'),
-    ];
-
-    for (const puppeteerDir of puppeteerDirs) {
-        const binary = findInPuppeteerDir(puppeteerDir);
-        if (binary) return binary;
-    }
-
-    // Check standard system locations
-    const candidates = [
-        // Linux Chromium
         '/usr/bin/chromium',
         '/usr/bin/chromium-browser',
-        // macOS Chromium (Homebrew or manual install)
+        // Puppeteer cache
-        '/Applications/Chromium.app/Contents/MacOS/Chromium',
+        path.join(process.env.HOME || '', '.cache/puppeteer/chromium'),
-        // Fallback to Chrome (extension loading may not work in Chrome 137+)
+        path.join(process.env.HOME || '', '.cache/puppeteer'),
+        // Chrome (fallback - extensions may not work in 137+)
+        '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
         '/usr/bin/google-chrome',
         '/usr/bin/google-chrome-stable',
-        '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
     ];
 
-    for (const candidate of candidates) {
+    for (const loc of fallbackLocations) {
-        if (fs.existsSync(candidate)) {
+        // Check if it's a puppeteer cache dir
-            // Warn if falling back to Chrome
+        if (loc.includes('.cache/puppeteer')) {
-            if (candidate.includes('google-chrome') || candidate.includes('Google Chrome')) {
+            const binary = findInPuppeteerDir(loc);
+            if (binary && validateBinary(binary)) {
+                return binary;
+            }
+        } else if (validateBinary(loc)) {
+            if (loc.includes('Google Chrome') || loc.includes('google-chrome')) {
                 console.error('[!] Warning: Using Chrome instead of Chromium. Extension loading may not work in Chrome 137+');
             }
-            return candidate;
+            return loc;
         }
     }
 
@@ -1028,6 +1135,9 @@ module.exports = {
     // Chrome launching
     launchChromium,
     killChrome,
+    // Chrome/Chromium install
+    installChromium,
+    installPuppeteerCore,
     // Chrome/Chromium binary finding
     findChromium,
     // Extension utilities
@@ -1055,7 +1165,9 @@ if (require.main === module) {
         console.log('Usage: chrome_utils.js <command> [args...]');
         console.log('');
         console.log('Commands:');
-        console.log('  findChromium [data_dir]');
+        console.log('  findChromium');
+        console.log('  installChromium');
+        console.log('  installPuppeteerCore [npm_prefix]');
         console.log('  launchChromium [output_dir] [extension_paths_json]');
         console.log('  killChrome <pid> [output_dir]');
         console.log('  killZombieChrome [data_dir]');
@@ -1072,8 +1184,7 @@ if (require.main === module) {
         try {
             switch (command) {
                 case 'findChromium': {
-                    const [dataDir] = commandArgs;
+                    const binary = findChromium();
-                    const binary = findChromium(dataDir);
                     if (binary) {
                         console.log(binary);
                     } else {
@@ -1083,6 +1194,32 @@ if (require.main === module) {
                     break;
                 }
 
+                case 'installChromium': {
+                    const result = await installChromium();
+                    if (result.success) {
+                        console.log(JSON.stringify({
+                            binary: result.binary,
+                            version: result.version,
+                        }));
+                    } else {
+                        console.error(result.error);
+                        process.exit(1);
+                    }
+                    break;
+                }
+
+                case 'installPuppeteerCore': {
+                    const [npmPrefix] = commandArgs;
+                    const result = await installPuppeteerCore({ npmPrefix: npmPrefix || undefined });
+                    if (result.success) {
+                        console.log(JSON.stringify({ path: result.path }));
+                    } else {
+                        console.error(result.error);
+                        process.exit(1);
+                    }
+                    break;
+                }
+
                 case 'launchChromium': {
                     const [outputDir, extensionPathsJson] = commandArgs;
                     const extensionPaths = extensionPathsJson ? JSON.parse(extensionPathsJson) : [];

archivebox/plugins/chrome/on_Crawl__00_chrome_install.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 """
-Install hook for Chrome/Chromium binary.
+Install hook for Chrome/Chromium and puppeteer-core.
 
-Runs at crawl start to verify Chromium is available.
+Runs at crawl start to install/find Chromium and puppeteer-core.
 Outputs JSONL for Binary and Machine config updates.
 Respects CHROME_BINARY env var for custom binary paths.
-Falls back to `npx @puppeteer/browsers install chromium@latest` if not found.
+Uses `npx @puppeteer/browsers install chromium@latest` and parses output.
 
 NOTE: We use Chromium instead of Chrome because Chrome 137+ removed support for
 --load-extension and --disable-extensions-except flags, which are needed for
@@ -16,73 +16,139 @@ import os
 import sys
 import json
 import subprocess
+from pathlib import Path
 
 
-def install_chromium_via_puppeteer() -> bool:
+def get_chrome_version(binary_path: str) -> str | None:
-    """Install Chromium using @puppeteer/browsers."""
+    """Get Chrome/Chromium version string."""
     try:
-        print("Chromium not found, attempting to install via @puppeteer/browsers...", file=sys.stderr)
         result = subprocess.run(
-            ['npx', '@puppeteer/browsers', 'install', 'chromium@latest'],
+            [binary_path, '--version'],
             capture_output=True,
             text=True,
-            timeout=300
+            timeout=5
         )
-        return result.returncode == 0
+        if result.returncode == 0:
-    except (subprocess.TimeoutExpired, FileNotFoundError, Exception) as e:
+            return result.stdout.strip()
-        print(f"Failed to install Chromium: {e}", file=sys.stderr)
+    except Exception:
+        pass
+    return None
+
+
+def install_puppeteer_core() -> bool:
+    """Install puppeteer-core to NODE_MODULES_DIR if not present."""
+    node_modules_dir = os.environ.get('NODE_MODULES_DIR', '').strip()
+    if not node_modules_dir:
+        # No isolated node_modules, skip (will use global)
+        return True
+
+    node_modules_path = Path(node_modules_dir)
+    if (node_modules_path / 'puppeteer-core').exists():
+        return True
+
+    # Get npm prefix from NODE_MODULES_DIR (parent of node_modules)
+    npm_prefix = node_modules_path.parent
+
+    try:
+        print(f"[*] Installing puppeteer-core to {npm_prefix}...", file=sys.stderr)
+        result = subprocess.run(
+            ['npm', 'install', '--prefix', str(npm_prefix), 'puppeteer-core', '@puppeteer/browsers'],
+            capture_output=True,
+            text=True,
+            timeout=60
+        )
+        if result.returncode == 0:
+            print(f"[+] puppeteer-core installed", file=sys.stderr)
+            return True
+        else:
+            print(f"[!] Failed to install puppeteer-core: {result.stderr}", file=sys.stderr)
+            return False
+    except Exception as e:
+        print(f"[!] Failed to install puppeteer-core: {e}", file=sys.stderr)
         return False
 
 
-def find_chromium() -> dict | None:
+def install_chromium() -> dict | None:
-    """Find Chromium binary, respecting CHROME_BINARY env var."""
+    """Install Chromium using @puppeteer/browsers and parse output for binary path.
-    # Quick check: if CHROME_BINARY is set and exists, skip expensive lookup
-    configured_binary = os.environ.get('CHROME_BINARY', '').strip()
-    if configured_binary and os.path.isfile(configured_binary) and os.access(configured_binary, os.X_OK):
-        # Binary is already configured and valid - exit immediately
-        sys.exit(0)
 
+    Output format: "chromium@<version> <path_to_binary>"
+    e.g.: "chromium@1563294 /Users/x/.cache/puppeteer/chromium/.../Chromium"
+
+    Note: npx is fast when chromium is already cached - it returns the path without re-downloading.
+    """
     try:
-        from abx_pkg import Binary, NpmProvider, EnvProvider, BrewProvider, AptProvider
+        print("[*] Installing Chromium via @puppeteer/browsers...", file=sys.stderr)
 
-        # Try to find chromium using abx-pkg
+        # Use --path to install to puppeteer's standard cache location
-        # Prefer chromium over chrome because Chrome 137+ removed --load-extension support
+        cache_path = os.path.expanduser('~/.cache/puppeteer')
-        binary = Binary(
+
-            name='chromium',
+        result = subprocess.run(
-            binproviders=[NpmProvider(), EnvProvider(), BrewProvider(), AptProvider()],
+            ['npx', '@puppeteer/browsers', 'install', 'chromium@1563297', f'--path={cache_path}'],
-            overrides={'npm': {'packages': ['@puppeteer/browsers']}}
+            capture_output=True,
+            text=True,
+            stdin=subprocess.DEVNULL,
+            timeout=300
         )
 
-        loaded = binary.load()
+        if result.returncode != 0:
-        if loaded and loaded.abspath:
+            print(f"[!] Failed to install Chromium: {result.stderr}", file=sys.stderr)
-            return {
+            return None
-                'name': 'chromium',
-                'abspath': str(loaded.abspath),
-                'version': str(loaded.version) if loaded.version else None,
-                'sha256': loaded.sha256 if hasattr(loaded, 'sha256') else None,
-                'binprovider': loaded.binprovider.name if loaded.binprovider else 'env',
-            }
 
-        # If not found, try to install via @puppeteer/browsers
+        # Parse output: "chromium@1563294 /path/to/Chromium"
-        if install_chromium_via_puppeteer():
+        output = result.stdout.strip()
-            # Try loading again after install
+        parts = output.split(' ', 1)
-            loaded = binary.load()
+        if len(parts) != 2:
-            if loaded and loaded.abspath:
+            print(f"[!] Failed to parse install output: {output}", file=sys.stderr)
-                return {
+            return None
-                    'name': 'chromium',
+
-                    'abspath': str(loaded.abspath),
+        version_str = parts[0]  # "chromium@1563294"
-                    'version': str(loaded.version) if loaded.version else None,
+        binary_path = parts[1].strip()
-                    'sha256': loaded.sha256 if hasattr(loaded, 'sha256') else None,
+
-                    'binprovider': loaded.binprovider.name if loaded.binprovider else 'npm',
+        if not binary_path or not os.path.exists(binary_path):
-                }
+            print(f"[!] Binary not found at: {binary_path}", file=sys.stderr)
-    except Exception:
+            return None
-        pass
+
+        # Extract version number
+        version = version_str.split('@')[1] if '@' in version_str else None
+
+        print(f"[+] Chromium installed: {binary_path}", file=sys.stderr)
+
+        return {
+            'name': 'chromium',
+            'abspath': binary_path,
+            'version': version,
+            'binprovider': 'puppeteer',
+        }
+
+    except subprocess.TimeoutExpired:
+        print("[!] Chromium install timed out", file=sys.stderr)
+    except FileNotFoundError:
+        print("[!] npx not found - is Node.js installed?", file=sys.stderr)
+    except Exception as e:
+        print(f"[!] Failed to install Chromium: {e}", file=sys.stderr)
 
     return None
 
 
 def main():
-    result = find_chromium()
+    # Install puppeteer-core if NODE_MODULES_DIR is set
+    install_puppeteer_core()
+
+    # Check if CHROME_BINARY is already set and valid
+    configured_binary = os.environ.get('CHROME_BINARY', '').strip()
+    if configured_binary and os.path.isfile(configured_binary) and os.access(configured_binary, os.X_OK):
+        version = get_chrome_version(configured_binary)
+        print(json.dumps({
+            'type': 'Binary',
+            'name': 'chromium',
+            'abspath': configured_binary,
+            'version': version,
+            'binprovider': 'env',
+        }))
+        sys.exit(0)
+
+    # Install/find Chromium via puppeteer
+    result = install_chromium()
 
     if result and result.get('abspath'):
         print(json.dumps({
@@ -110,7 +176,7 @@ def main():
 
         sys.exit(0)
     else:
-        print(f"Chromium binary not found", file=sys.stderr)
+        print("Chromium binary not found", file=sys.stderr)
         sys.exit(1)
 
 

archivebox/plugins/chrome/tests/test_chrome.py

@@ -67,28 +67,29 @@ def get_test_env():
     return env
 
 
-def find_chromium_binary():
+def find_chromium_binary(data_dir=None):
-    """Find the Chromium binary installed by @puppeteer/browsers."""
+    """Find the Chromium binary using chrome_utils.js findChromium().
-    if not CHROMIUM_INSTALL_DIR.exists():
-        return None
 
-    # Look for versioned directories
+    This uses the centralized findChromium() function which checks:
-    for version_dir in sorted(CHROMIUM_INSTALL_DIR.iterdir(), reverse=True):
+    - CHROME_BINARY env var
-        if not version_dir.is_dir():
+    - @puppeteer/browsers install locations (in data_dir/chromium)
-            continue
+    - System Chromium locations
-        # macOS ARM
+    - Falls back to Chrome (with warning)
-        mac_arm = version_dir / 'chrome-mac' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
-        if mac_arm.exists():
-            return str(mac_arm)
-        # macOS x64
-        mac_x64 = version_dir / 'chrome-mac-x64' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
-        if mac_x64.exists():
-            return str(mac_x64)
-        # Linux
-        linux = version_dir / 'chrome-linux' / 'chrome'
-        if linux.exists():
-            return str(linux)
 
+    Args:
+        data_dir: Directory where chromium was installed (contains chromium/ subdir)
+    """
+    chrome_utils = PLUGIN_DIR / 'chrome_utils.js'
+    # Use provided data_dir, or fall back to env var, or current dir
+    search_dir = data_dir or os.environ.get('DATA_DIR', '.')
+    result = subprocess.run(
+        ['node', str(chrome_utils), 'findChromium', str(search_dir)],
+        capture_output=True,
+        text=True,
+        timeout=10
+    )
+    if result.returncode == 0 and result.stdout.strip():
+        return result.stdout.strip()
     return None
 
 

archivebox/plugins/istilldontcareaboutcookies/tests/test_istilldontcareaboutcookies.py

@@ -171,31 +171,30 @@ def setup_test_lib_dirs(tmpdir: Path) -> dict:
     }
 
 
-def find_chromium_binary():
+PLUGINS_ROOT = PLUGIN_DIR.parent
-    """Find the Chromium binary installed by @puppeteer/browsers."""
-    chromium_dir = Path(os.environ.get('DATA_DIR', '.')).resolve() / 'chromium'
-    if not chromium_dir.exists():
-        return None
 
-    for version_dir in sorted(chromium_dir.iterdir(), reverse=True):
+
-        if not version_dir.is_dir():
+def find_chromium_binary():
-            continue
+    """Find the Chromium binary using chrome_utils.js findChromium().
-        # macOS ARM
+
-        mac_arm = version_dir / 'chrome-mac' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
+    This uses the centralized findChromium() function which checks:
-        if mac_arm.exists():
+    - CHROME_BINARY env var
-            return str(mac_arm)
+    - @puppeteer/browsers install locations
-        # macOS x64
+    - System Chromium locations
-        mac_x64 = version_dir / 'chrome-mac-x64' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
+    - Falls back to Chrome (with warning)
-        if mac_x64.exists():
+    """
-            return str(mac_x64)
+    chrome_utils = PLUGINS_ROOT / 'chrome' / 'chrome_utils.js'
-        # Linux
+    result = subprocess.run(
-        linux = version_dir / 'chrome-linux' / 'chrome'
+        ['node', str(chrome_utils), 'findChromium'],
-        if linux.exists():
+        capture_output=True,
-            return str(linux)
+        text=True,
+        timeout=10
+    )
+    if result.returncode == 0 and result.stdout.strip():
+        return result.stdout.strip()
     return None
 
 
-PLUGINS_ROOT = PLUGIN_DIR.parent
 CHROME_LAUNCH_HOOK = PLUGINS_ROOT / 'chrome' / 'on_Crawl__20_chrome_launch.bg.js'
 
 TEST_URL = 'https://www.filmin.es/'

archivebox/plugins/ublock/tests/test_ublock.py

@@ -157,54 +157,94 @@ def test_large_extension_size():
             assert size_bytes > 1_000_000, f"uBlock Origin should be > 1MB, got {size_bytes} bytes"
 
 
-def setup_test_lib_dirs(tmpdir: Path) -> dict:
-    """Get lib directories for tests, using project's existing node_modules.
-
-    Uses the project's node_modules to avoid slow npm install during tests.
-    """
-    # Use project's existing node_modules (puppeteer-core already installed)
-    project_root = Path(__file__).parent.parent.parent.parent.parent
-    node_modules_dir = project_root / 'node_modules'
-
-    if not (node_modules_dir / 'puppeteer-core').exists():
-        pytest.skip("puppeteer-core not installed in project node_modules")
-
-    return {
-        'NODE_MODULES_DIR': str(node_modules_dir),
-    }
-
-
-def find_chromium_binary():
-    """Find the Chromium binary installed by @puppeteer/browsers."""
-    chromium_dir = Path(os.environ.get('DATA_DIR', '.')).resolve() / 'chromium'
-    if not chromium_dir.exists():
-        return None
-
-    for version_dir in sorted(chromium_dir.iterdir(), reverse=True):
-        if not version_dir.is_dir():
-            continue
-        # macOS ARM
-        mac_arm = version_dir / 'chrome-mac' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
-        if mac_arm.exists():
-            return str(mac_arm)
-        # macOS x64
-        mac_x64 = version_dir / 'chrome-mac-x64' / 'Chromium.app' / 'Contents' / 'MacOS' / 'Chromium'
-        if mac_x64.exists():
-            return str(mac_x64)
-        # Linux
-        linux = version_dir / 'chrome-linux' / 'chrome'
-        if linux.exists():
-            return str(linux)
-    return None
-
-
 PLUGINS_ROOT = PLUGIN_DIR.parent
+CHROME_INSTALL_HOOK = PLUGINS_ROOT / 'chrome' / 'on_Crawl__00_chrome_install.py'
 CHROME_LAUNCH_HOOK = PLUGINS_ROOT / 'chrome' / 'on_Crawl__20_chrome_launch.bg.js'
 
+
+def setup_test_env(tmpdir: Path) -> dict:
+    """Set up isolated data/lib directory structure for tests.
+
+    Creates structure like:
+        <tmpdir>/data/
+            lib/
+                arm64-darwin/   (or x86_64-linux, etc.)
+                    npm/
+                        bin/
+                        node_modules/
+            chrome_extensions/
+
+    Calls chrome install hook which handles puppeteer-core and chromium installation.
+    Returns env dict with DATA_DIR, LIB_DIR, NPM_BIN_DIR, NODE_MODULES_DIR, CHROME_BINARY, etc.
+    """
+    import platform
+
+    # Determine machine type (matches archivebox.config.paths.get_machine_type())
+    machine = platform.machine().lower()
+    system = platform.system().lower()
+    if machine in ('arm64', 'aarch64'):
+        machine = 'arm64'
+    elif machine in ('x86_64', 'amd64'):
+        machine = 'x86_64'
+    machine_type = f"{machine}-{system}"
+
+    # Create proper directory structure
+    data_dir = tmpdir / 'data'
+    lib_dir = data_dir / 'lib' / machine_type
+    npm_dir = lib_dir / 'npm'
+    npm_bin_dir = npm_dir / 'bin'
+    node_modules_dir = npm_dir / 'node_modules'
+    chrome_extensions_dir = data_dir / 'chrome_extensions'
+
+    # Create all directories
+    node_modules_dir.mkdir(parents=True, exist_ok=True)
+    npm_bin_dir.mkdir(parents=True, exist_ok=True)
+    chrome_extensions_dir.mkdir(parents=True, exist_ok=True)
+
+    # Build complete env dict
+    env = os.environ.copy()
+    env.update({
+        'DATA_DIR': str(data_dir),
+        'LIB_DIR': str(lib_dir),
+        'MACHINE_TYPE': machine_type,
+        'NPM_BIN_DIR': str(npm_bin_dir),
+        'NODE_MODULES_DIR': str(node_modules_dir),
+        'CHROME_EXTENSIONS_DIR': str(chrome_extensions_dir),
+    })
+
+    # Call chrome install hook (installs puppeteer-core and chromium, outputs JSONL)
+    result = subprocess.run(
+        ['python', str(CHROME_INSTALL_HOOK)],
+        capture_output=True, text=True, timeout=10, env=env
+    )
+    if result.returncode != 0:
+        pytest.skip(f"Chrome install hook failed: {result.stderr}")
+
+    # Parse JSONL output to get CHROME_BINARY
+    chrome_binary = None
+    for line in result.stdout.strip().split('\n'):
+        if not line.strip():
+            continue
+        try:
+            data = json.loads(line)
+            if data.get('type') == 'Binary' and data.get('abspath'):
+                chrome_binary = data['abspath']
+                break
+        except json.JSONDecodeError:
+            continue
+
+    if not chrome_binary or not Path(chrome_binary).exists():
+        pytest.skip(f"Chromium binary not found: {chrome_binary}")
+
+    env['CHROME_BINARY'] = chrome_binary
+    return env
+
+
 # Test URL: ad blocker test page that shows if ads are blocked
 TEST_URL = 'https://d3ward.github.io/toolz/adblock.html'
 
 
+@pytest.mark.timeout(15)
 def test_extension_loads_in_chromium():
     """Verify uBlock extension loads in Chromium by visiting its dashboard page.
 
@@ -214,35 +254,30 @@ def test_extension_loads_in_chromium():
     """
     import signal
     import time
+    print("[test] Starting test_extension_loads_in_chromium", flush=True)
 
     with tempfile.TemporaryDirectory() as tmpdir:
         tmpdir = Path(tmpdir)
+        print(f"[test] tmpdir={tmpdir}", flush=True)
 
-        # Set up isolated lib directories for this test
+        # Set up isolated env with proper directory structure
-        lib_env = setup_test_lib_dirs(tmpdir)
+        env = setup_test_env(tmpdir)
+        env.setdefault('CHROME_HEADLESS', 'true')
+        print(f"[test] DATA_DIR={env.get('DATA_DIR')}", flush=True)
+        print(f"[test] CHROME_BINARY={env.get('CHROME_BINARY')}", flush=True)
 
-        # Set up extensions directory
+        ext_dir = Path(env['CHROME_EXTENSIONS_DIR'])
-        ext_dir = tmpdir / 'chrome_extensions'
-        ext_dir.mkdir(parents=True)
-
-        env = os.environ.copy()
-        env.update(lib_env)
-        env['CHROME_EXTENSIONS_DIR'] = str(ext_dir)
-        env['CHROME_HEADLESS'] = 'true'
-
-        # Ensure CHROME_BINARY points to Chromium
-        chromium = find_chromium_binary()
-        if chromium:
-            env['CHROME_BINARY'] = chromium
 
         # Step 1: Install the uBlock extension
+        print("[test] Installing uBlock extension...", flush=True)
         result = subprocess.run(
             ['node', str(INSTALL_SCRIPT)],
             capture_output=True,
             text=True,
             env=env,
-            timeout=15
+            timeout=5
         )
+        print(f"[test] Extension install rc={result.returncode}", flush=True)
         assert result.returncode == 0, f"Extension install failed: {result.stderr}"
 
         # Verify extension cache was created
@@ -252,7 +287,8 @@ def test_extension_loads_in_chromium():
         print(f"Extension installed: {ext_data.get('name')} v{ext_data.get('version')}")
 
         # Step 2: Launch Chromium using the chrome hook (loads extensions automatically)
-        crawl_dir = tmpdir / 'crawl'
+        data_dir = Path(env['DATA_DIR'])
+        crawl_dir = data_dir / 'crawl'
         crawl_dir.mkdir()
         chrome_dir = crawl_dir / 'chrome'
 
@@ -422,22 +458,11 @@ def test_blocks_ads_on_test_page():
     with tempfile.TemporaryDirectory() as tmpdir:
         tmpdir = Path(tmpdir)
 
-        # Set up isolated lib directories for this test
+        # Set up isolated env with proper directory structure
-        lib_env = setup_test_lib_dirs(tmpdir)
+        env = setup_test_env(tmpdir)
-
-        # Set up extensions directory
-        ext_dir = tmpdir / 'chrome_extensions'
-        ext_dir.mkdir(parents=True)
-
-        env = os.environ.copy()
-        env.update(lib_env)
-        env['CHROME_EXTENSIONS_DIR'] = str(ext_dir)
         env['CHROME_HEADLESS'] = 'true'
 
-        # Ensure CHROME_BINARY points to Chromium
+        ext_dir = Path(env['CHROME_EXTENSIONS_DIR'])
-        chromium = find_chromium_binary()
-        if chromium:
-            env['CHROME_BINARY'] = chromium
 
         # Step 1: Install the uBlock extension
         result = subprocess.run(
@@ -455,8 +480,9 @@ def test_blocks_ads_on_test_page():
         ext_data = json.loads(cache_file.read_text())
         print(f"Extension installed: {ext_data.get('name')} v{ext_data.get('version')}")
 
-        # Step 2: Launch Chrome using the chrome hook (loads extensions automatically)
+        # Step 2: Launch Chromium using the chrome hook (loads extensions automatically)
-        crawl_dir = tmpdir / 'crawl'
+        data_dir = Path(env['DATA_DIR'])
+        crawl_dir = data_dir / 'crawl'
         crawl_dir.mkdir()
         chrome_dir = crawl_dir / 'chrome'