diff --git a/compile b/compile
index 26c94bc..b23eb21 100755
--- a/compile
+++ b/compile
@@ -33,9 +33,9 @@ if ($config['debug']) {
 $build = new Build(
 	sourceDirectory: __DIR__ . '/loader',
 	buildDirectory: __DIR__ . '/build',
-	pharFilename: 'spip_loader.php'
+	pharFilename: 'spip_loader.php',
+	debug: $config['debug'],
 );
-
 $build->prepare();
 $build->run();
 $build->showResults();
diff --git a/compiler/Build.php b/compiler/Build.php
index 94f51b0..ac3f373 100644
--- a/compiler/Build.php
+++ b/compiler/Build.php
@@ -15,6 +15,7 @@ class Build {
 		private string $buildDirectory,
 		private string $pharFilename,
 		private Timer $timer = new Timer(),
+		private bool $debug = false,
 	) {
 	}
 
@@ -41,6 +42,7 @@ class Build {
 		$phar = new PharArchive(
 			sourceDirectory: $this->sourceDirectory,
 			buildDirectory: $this->buildDirectory,
+			debug: $this->debug,
 		);
 		$n = $phar->build(
 			$git->getVersion(),
diff --git a/compiler/PharArchive.php b/compiler/PharArchive.php
index 170fb9c..3750753 100644
--- a/compiler/PharArchive.php
+++ b/compiler/PharArchive.php
@@ -13,7 +13,8 @@ class PharArchive {
 	public function __construct(
 		private string $sourceDirectory,
 		private string $buildDirectory,
-		private string $filename = self::FILENAME
+		private string $filename = self::FILENAME,
+		private bool $debug = false,
 	) {
 	}
 
@@ -59,10 +60,7 @@ class PharArchive {
 		$phar = new \Phar($destFile, 0, $this->filename);
 		$phar->setSignatureAlgorithm(\Phar::SHA512);
 		$phar->startBuffering();
-		$stub = file_get_contents($this->sourceDirectory . '/phar/stub.php');
-		$stub = $this->stripWhitespacePhpFile($stub);
-		$stub = str_replace("<?php\n", "<?php\n// Version: $private_version\n", $stub);
-		$phar->setStub($stub);
+		$phar->setStub($this->getStub($private_version));
 		$phar['/version.php'] = "<?php return '$public_version';";
 		$phar['/index.php'] = "<?php require __DIR__ . '/public/index.php';";
 
@@ -94,6 +92,14 @@ class PharArchive {
 		rename($this->buildDirectory . '/' . self::FILENAME, $this->buildDirectory . '/' . $filename);
 	}
 
+	private function getStub(string $version): string {
+		$stub = file_get_contents($this->sourceDirectory . '/phar/stub.php');
+		#$stub = $this->stripWhitespacePhpFile($stub);
+		$stub = str_replace("<?php\n", "<?php\n// Version: $version\n", $stub);
+		$stub = str_replace("\$debug = false;\n", "\$debug = " . var_export($this->debug, true) . ";\n", $stub);
+		return $stub;
+	}
+
 	/**
 	 * Removes whitespace from a PHP source string while preserving line numbers.
 	 *
diff --git a/loader/phar/stub.php b/loader/phar/stub.php
index 9d360b0..84052b7 100644
--- a/loader/phar/stub.php
+++ b/loader/phar/stub.php
@@ -1,25 +1,41 @@
 <?php
-# ini_set('display_errors', 1);
-# error_reporting(E_ALL ^ E_DEPRECATED);
-# require_once 'phar://' . __FILE__ . '/vendor/autoload.php';
 
-if (!http_response_code()) {
-	require_once 'phar://' . __FILE__ . '/bin/console.php';
-	exit(0);
-}
+$debug = false;
+
+try {
+	if ($debug) {
+		@ini_set('display_errors', 1);
+		error_reporting(E_ALL ^ E_DEPRECATED);
+	}
+
+	Phar::mapPhar('spip_loader.phar');
+	require_once 'phar://spip_loader.phar/vendor/autoload.php';
 
-Phar::webPhar(
-	'spip_loader.phar',
-	null,
-	null,
-	[
-		'svg' => 'image/svg+xml'
-	],
-	function ($path) {
-		# dump([ '$path' => $path, 'PATH_INFO' => $_SERVER['PATH_INFO'], 'REQUEST_URI' => $_SERVER['REQUEST_URI'], 'SCRIPT_FILENAME' => $_SERVER['SCRIPT_FILENAME'], 'SCRIPT_NAME' => $_SERVER['SCRIPT_NAME'], 'PHP_SELF' => $_SERVER['PHP_SELF'], 'HTTP_HOST' => $_SERVER['HTTP_HOST'], 'Phar::running(false)' => \Phar::running(false) ]);
+	if (!http_response_code()) {
+		require_once 'phar://spip_loader.phar/bin/console.php';
+		exit(0);
+	}
+
+	function spip_loader_phar_path($path) {
 		if (!$path) {
 			$path = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
 		}
+		if (!$path) {
+			$path = isset($_SERVER['REQUEST_URI']) && isset($_SERVER['PHP_SELF'])
+				? substr($_SERVER['REQUEST_URI'], strlen($_SERVER['PHP_SELF']))
+				: '';
+		}
+		return $path;
+	}
+
+	Phar::webPhar('spip_loader.phar', null, null, ['svg' => 'image/svg+xml'], function ($incomming_path) use ($debug) {
+		$path = spip_loader_phar_path($incomming_path);
+		if ($debug) {
+			register_shutdown_function(function() use ($incomming_path, $path) {
+				$debug = new Spip\Loader\Debug();
+				echo $debug->table($debug->phar_rewrite_debug($incomming_path, $path));
+			});
+		}
 		$extension = pathinfo($path, \PATHINFO_EXTENSION);
 
 		if (in_array($extension, ['css', 'js', 'jpg', 'png', 'ico', 'svg'])) {
@@ -35,7 +51,12 @@ Phar::webPhar(
 			return $path;
 		}
 		return false;
-	}
-);
+	});
+
+} catch (\Exception $e) {
+	if ($debug) { echo $e->getMessage(); } else { throw $e; };
+} catch (\Error $e) {
+	if ($debug) { echo $e->getMessage(); } else { throw $e; };
+}
 
 __HALT_COMPILER();
diff --git a/loader/src/Config/Internal.php b/loader/src/Config/Internal.php
index 7744309..3cf225f 100644
--- a/loader/src/Config/Internal.php
+++ b/loader/src/Config/Internal.php
@@ -73,6 +73,9 @@ final class Internal extends AbstractConfig {
 		if (!$is_cli) {
 			$script_name = $request->server('SCRIPT_NAME');
 			$path_info = $request->server('PATH_INFO');
+			if (!$path_info) {
+				$path_info = substr($request->server('REQUEST_URI'), strlen($request->server('PHP_SELF')));
+			}
 			$self = $script_name . $path_info;
 			$script_url = "//{$request->server('HTTP_HOST')}$self";
 		}
diff --git a/loader/src/Debug.php b/loader/src/Debug.php
new file mode 100644
index 0000000..6c4887a
--- /dev/null
+++ b/loader/src/Debug.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Spip\Loader;
+
+class Debug {
+
+	public function phar_rewrite_debug($incomming_path, $calculated_path) {
+		return [
+			'incomming $path' => $incomming_path,
+			'calculated $path' => $calculated_path,
+			'PATH_INFO' => $_SERVER['PATH_INFO'],
+			'REQUEST_URI' => $_SERVER['REQUEST_URI'],
+			'SCRIPT_FILENAME' => $_SERVER['SCRIPT_FILENAME'],
+			'SCRIPT_NAME' => $_SERVER['SCRIPT_NAME'],
+			'PHP_SELF' => $_SERVER['PHP_SELF'],
+			'HTTP_HOST' => $_SERVER['HTTP_HOST'],
+			'Phar::running(false)' => \Phar::running(false)
+		];
+	}
+
+	public function table(array $data) {
+		$box = "<div class='msg-alert notice' style='margin-bottom:0'><table>";
+		foreach ($data as $key => $val) {
+			$box .= "<tr><th>$key</th><td><code>" . var_export($val, true) . "</code></td></tr>\n";
+		}
+		$box .= "</table></div>\n";
+		return $box;
+	}
+}