diff --git a/bin/spc b/bin/spc
index 18dd3a38..09d92995 100755
--- a/bin/spc
+++ b/bin/spc
@@ -9,12 +9,12 @@ if (PHP_OS_FAMILY !== 'Windows' && PHP_BINARY !== (__DIR__ . '/php') && file_exi
     pcntl_exec(__DIR__ . '/php', $argv);
 }
 
-if (file_exists(dirname(__DIR__) . '/vendor/autoload.php')) {
-    // Current: ./bin (git/project mode)
-    require_once dirname(__DIR__) . '/vendor/autoload.php';
-} else {
+if (file_exists(dirname(__DIR__, 3) . '/autoload.php')) {
     // Current: ./vendor/crazywhalecc/static-php-cli/bin (composer library mode)
     require_once dirname(__DIR__, 3) . '/autoload.php';
+} else {
+    // Current: ./bin (git/project mode)
+    require_once dirname(__DIR__) . '/vendor/autoload.php';
 }
 
 // 防止 Micro 打包状态下不支持中文的显示（虽然这个项目目前好像没输出过中文？）
diff --git a/src/SPC/ConsoleApplication.php b/src/SPC/ConsoleApplication.php
index bab8a008..bc65be9f 100644
--- a/src/SPC/ConsoleApplication.php
+++ b/src/SPC/ConsoleApplication.php
@@ -30,7 +30,7 @@
 /**
  * static-php-cli console app entry
  */
-final class ConsoleApplication extends Application
+class ConsoleApplication extends Application
 {
     public const VERSION = '2.5.2';
 
diff --git a/src/SPC/builder/BuilderProvider.php b/src/SPC/builder/BuilderProvider.php
index 18636952..038e97af 100644
--- a/src/SPC/builder/BuilderProvider.php
+++ b/src/SPC/builder/BuilderProvider.php
@@ -36,6 +36,7 @@ public static function makeBuilderByInput(InputInterface $input): BuilderBase
             'BSD' => new BSDBuilder($input->getOptions()),
             default => throw new WrongUsageException('Current OS "' . PHP_OS_FAMILY . '" is not supported yet'),
         };
+
         return self::$builder;
     }
 
diff --git a/src/SPC/builder/unix/UnixBuilderBase.php b/src/SPC/builder/unix/UnixBuilderBase.php
index 4c8df333..8b635fec 100644
--- a/src/SPC/builder/unix/UnixBuilderBase.php
+++ b/src/SPC/builder/unix/UnixBuilderBase.php
@@ -98,6 +98,12 @@ public function proveLibs(array $sorted_libraries): void
             ROOT_DIR . '/src/SPC/builder/' . osfamily2dir() . '/library',
             'SPC\builder\\' . osfamily2dir() . '\library'
         );
+        if (file_exists(WORKING_DIR . '/src/builder/' . osfamily2dir() . '/library')) {
+            $classes = array_merge($classes, FileSystem::getClassesPsr4(
+                WORKING_DIR . '/src/builder/' . osfamily2dir() . '/library',
+                'App\builder\\' . osfamily2dir() . '\library'
+            ));
+        }
         foreach ($classes as $class) {
             if (defined($class . '::NAME') && $class::NAME !== 'unknown' && Config::getLib($class::NAME) !== null) {
                 $support_lib_list[$class::NAME] = $class;
diff --git a/src/SPC/builder/windows/WindowsBuilder.php b/src/SPC/builder/windows/WindowsBuilder.php
index 7a604ca8..99ef7a18 100644
--- a/src/SPC/builder/windows/WindowsBuilder.php
+++ b/src/SPC/builder/windows/WindowsBuilder.php
@@ -223,6 +223,12 @@ public function proveLibs(array $sorted_libraries): void
             ROOT_DIR . '\src\SPC\builder\\' . osfamily2dir() . '\library',
             'SPC\builder\\' . osfamily2dir() . '\library'
         );
+        if (file_exists(WORKING_DIR . '\src\builder\\' . osfamily2dir() . '\library')) {
+            $classes = array_merge($classes, FileSystem::getClassesPsr4(
+                WORKING_DIR . '\src\builder\\' . osfamily2dir() . '\library',
+                'App\builder\\' . osfamily2dir() . '\library'
+            ));
+        }
         foreach ($classes as $class) {
             if (defined($class . '::NAME') && $class::NAME !== 'unknown' && Config::getLib($class::NAME) !== null) {
                 $support_lib_list[$class::NAME] = $class;
diff --git a/src/SPC/store/Downloader.php b/src/SPC/store/Downloader.php
index 7117bb3f..8b9f2b51 100644
--- a/src/SPC/store/Downloader.php
+++ b/src/SPC/store/Downloader.php
@@ -372,6 +372,12 @@ public static function downloadPackage(string $name, ?array $pkg = null, bool $f
                     break;
                 case 'custom':          // Custom download method, like API-based download or other
                     $classes = FileSystem::getClassesPsr4(ROOT_DIR . '/src/SPC/store/source', 'SPC\store\source');
+                    if (file_exists(WORKING_DIR . '/src/store/source')) {
+                        $classes = array_merge($classes, FileSystem::getClassesPsr4(
+                            WORKING_DIR . '/src/store/source',
+                            'App\store\source'
+                        ));
+                    }
                     foreach ($classes as $class) {
                         if (is_a($class, CustomSourceBase::class, true) && $class::NAME === $name) {
                             (new $class())->fetch($force);
@@ -483,6 +489,12 @@ public static function downloadSource(string $name, ?array $source = null, bool
                         break;
                     }
                     $classes = FileSystem::getClassesPsr4(ROOT_DIR . '/src/SPC/store/source', 'SPC\store\source');
+                    if (file_exists(WORKING_DIR . '/src/store/source')) {
+                        $classes = array_merge($classes, FileSystem::getClassesPsr4(
+                            WORKING_DIR . '/src/store/source',
+                            'App\store\source'
+                        ));
+                    }
                     foreach ($classes as $class) {
                         if (is_a($class, CustomSourceBase::class, true) && $class::NAME === $name) {
                             (new $class())->fetch($force, $source, $download_as);
diff --git a/src/SPC/store/FileSystem.php b/src/SPC/store/FileSystem.php
index 16047427..262c4271 100644
--- a/src/SPC/store/FileSystem.php
+++ b/src/SPC/store/FileSystem.php
@@ -24,16 +24,25 @@ public static function loadConfigArray(string $config, ?string $config_dir = nul
             WORKING_DIR . '/config/' . $config . '.json',
             ROOT_DIR . '/config/' . $config . '.json',
         ];
+
+        $all = [];
         foreach ($tries as $try) {
             if (file_exists($try)) {
                 $json = json_decode(self::readFile($try), true);
                 if (!is_array($json)) {
                     throw new FileSystemException('Reading ' . $try . ' failed');
                 }
-                return $json;
+                $all = array_merge($json, $all);
             }
         }
-        throw new FileSystemException('Reading ' . $config . '.json failed');
+
+        ksort($all);
+
+        if (count($all) === 0) {
+            throw new FileSystemException('Reading ' . $config . '.json failed');
+        }
+
+        return $all;
     }
 
     /**
diff --git a/src/SPC/util/CustomExt.php b/src/SPC/util/CustomExt.php
index bbd4adf7..38689a50 100644
--- a/src/SPC/util/CustomExt.php
+++ b/src/SPC/util/CustomExt.php
@@ -24,6 +24,9 @@ public function __construct(protected string $ext_name) {}
     public static function loadCustomExt(): void
     {
         $classes = FileSystem::getClassesPsr4(ROOT_DIR . '/src/SPC/builder/extension', 'SPC\builder\extension');
+        if (file_exists(WORKING_DIR . '/src/builder/extension')) {
+            $classes = array_merge($classes, FileSystem::getClassesPsr4(WORKING_DIR . '/src/builder/extension', 'App\builder\extension'));
+        }
         foreach ($classes as $class) {
             $reflection = new \ReflectionClass($class);
             foreach ($reflection->getAttributes(CustomExt::class) as $attribute) {