diff --git a/src/SPC/builder/BuilderBase.php b/src/SPC/builder/BuilderBase.php
index b410aab3..e6e27cda 100644
--- a/src/SPC/builder/BuilderBase.php
+++ b/src/SPC/builder/BuilderBase.php
@@ -10,6 +10,7 @@ use SPC\exception\WrongUsageException;
 use SPC\store\Config;
 use SPC\store\FileSystem;
 use SPC\store\LockFile;
+use SPC\store\pkg\GoXcaddy;
 use SPC\store\SourceManager;
 use SPC\store\SourcePatcher;
 use SPC\util\AttributeMapper;
@@ -507,8 +508,7 @@ abstract class BuilderBase
                 throw new WrongUsageException('FrankenPHP SAPI is only available on Linux and macOS!');
             }
             // frankenphp needs package go-xcaddy installed
-            $pkg_dir = PKG_ROOT_PATH . '/go-xcaddy-' . arch2gnu(php_uname('m')) . '-' . osfamily2shortname();
-            if (!file_exists("{$pkg_dir}/bin/go") || !file_exists("{$pkg_dir}/bin/xcaddy")) {
+            if (!GoXcaddy::isInstalled()) {
                 global $argv;
                 throw new WrongUsageException("FrankenPHP SAPI requires the go-xcaddy package, please install it first: {$argv[0]} install-pkg go-xcaddy");
             }
diff --git a/src/SPC/builder/unix/UnixBuilderBase.php b/src/SPC/builder/unix/UnixBuilderBase.php
index 5309636f..89c7e937 100644
--- a/src/SPC/builder/unix/UnixBuilderBase.php
+++ b/src/SPC/builder/unix/UnixBuilderBase.php
@@ -266,7 +266,7 @@ abstract class UnixBuilderBase extends BuilderBase
 
     protected function buildFrankenphp(): void
     {
-        GlobalEnvManager::addPathIfNotExists(GoXcaddy::getEnvironment()['PATH']);
+        GlobalEnvManager::addPathIfNotExists(GoXcaddy::getPath());
         $nobrotli = $this->getLib('brotli') === null ? ',nobrotli' : '';
         $nowatcher = $this->getLib('watcher') === null ? ',nowatcher' : '';
         $xcaddyModules = getenv('SPC_CMD_VAR_FRANKENPHP_XCADDY_MODULES');
@@ -310,7 +310,7 @@ abstract class UnixBuilderBase extends BuilderBase
             $cflags .= ' -Wno-error=missing-profile';
             $libs .= ' -lgcov';
         }
-        $env = [
+        $env = [...[
             'CGO_ENABLED' => '1',
             'CGO_CFLAGS' => clean_spaces($cflags),
             'CGO_LDFLAGS' => "{$this->arch_ld_flags} {$staticFlags} {$config['ldflags']} {$libs}",
@@ -320,12 +320,7 @@ abstract class UnixBuilderBase extends BuilderBase
                 "{$frankenPhpVersion} PHP {$libphpVersion} Caddy'\\\" " .
                 "-tags={$muslTags}nobadger,nomysql,nopgx{$nobrotli}{$nowatcher}",
             'LD_LIBRARY_PATH' => BUILD_LIB_PATH,
-        ];
-        foreach (GoXcaddy::getEnvironment() as $key => $value) {
-            if ($key !== 'PATH') {
-                $env[$key] = $value;
-            }
-        }
+        ], ...GoXcaddy::getEnvironment()];
         shell()->cd(BUILD_BIN_PATH)
             ->setEnv($env)
             ->exec("xcaddy build --output frankenphp {$xcaddyModules}");
diff --git a/src/SPC/store/FileSystem.php b/src/SPC/store/FileSystem.php
index a40f5f01..7a574925 100644
--- a/src/SPC/store/FileSystem.php
+++ b/src/SPC/store/FileSystem.php
@@ -274,7 +274,7 @@ class FileSystem
     public static function convertWinPathToMinGW(string $path): string
     {
         if (preg_match('/^[A-Za-z]:/', $path)) {
-            $path = '/' . strtolower(substr($path, 0, 1)) . '/' . str_replace('\\', '/', substr($path, 2));
+            $path = '/' . strtolower($path[0]) . '/' . str_replace('\\', '/', substr($path, 2));
         }
         return $path;
     }
@@ -314,8 +314,13 @@ class FileSystem
             $sub_file = self::convertPath($dir . '/' . $v);
             if (is_dir($sub_file) && $recursive) {
                 # 如果是 目录 且 递推 , 则递推添加下级文件
-                $list = array_merge($list, self::scanDirFiles($sub_file, $recursive, $relative));
-            } elseif (is_file($sub_file) || is_dir($sub_file) && !$recursive && $include_dir) {
+                $sub_list = self::scanDirFiles($sub_file, $recursive, $relative);
+                if (is_array($sub_list)) {
+                    foreach ($sub_list as $item) {
+                        $list[] = $item;
+                    }
+                }
+            } elseif (is_file($sub_file) || (is_dir($sub_file) && !$recursive && $include_dir)) {
                 # 如果是 文件 或 (是 目录 且 不递推 且 包含目录)
                 if (is_string($relative) && mb_strpos($sub_file, $relative) === 0) {
                     $list[] = ltrim(mb_substr($sub_file, mb_strlen($relative)), '/\\');
@@ -440,7 +445,7 @@ class FileSystem
     public static function writeFile(string $path, mixed $content, ...$args): bool|int|string
     {
         $dir = pathinfo(self::convertPath($path), PATHINFO_DIRNAME);
-        if (!is_dir($dir) && !mkdir($dir, 0755, true)) {
+        if (!is_dir($dir) && !mkdir($dir, 0755, true) && !is_dir($dir)) {
             throw new FileSystemException('Write file failed, cannot create parent directory: ' . $dir);
         }
         return file_put_contents($path, $content, ...$args);
diff --git a/src/SPC/store/pkg/CustomPackage.php b/src/SPC/store/pkg/CustomPackage.php
index 093f65d0..eb972d74 100644
--- a/src/SPC/store/pkg/CustomPackage.php
+++ b/src/SPC/store/pkg/CustomPackage.php
@@ -30,10 +30,14 @@ abstract class CustomPackage
 
     /**
      * Get the environment variables this package needs to be usable.
-     * PATH needs to be appended, rather than replaced.
      */
     abstract public static function getEnvironment(): array;
 
+    /**
+     * Get the PATH required to use this package.
+     */
+    abstract public static function getPath(): ?string;
+
     abstract public static function isInstalled(): bool;
 
     /**
diff --git a/src/SPC/store/pkg/GoXcaddy.php b/src/SPC/store/pkg/GoXcaddy.php
index daac9dc9..0c1c6f8c 100644
--- a/src/SPC/store/pkg/GoXcaddy.php
+++ b/src/SPC/store/pkg/GoXcaddy.php
@@ -90,22 +90,17 @@ class GoXcaddy extends CustomPackage
 
     public static function getEnvironment(): array
     {
-        $arch = arch2gnu(php_uname('m'));
-        $os = match (PHP_OS_FAMILY) {
-            'Windows' => 'win',
-            'Darwin' => 'macos',
-            'BSD' => 'freebsd',
-            default => 'linux',
-        };
-
-        $packageName = "go-xcaddy-{$arch}-{$os}";
+        $packageName = 'go-xcaddy';
         $pkgroot = PKG_ROOT_PATH;
-
         return [
-            'PATH' => "{$pkgroot}/{$packageName}/bin",
             'GOROOT' => "{$pkgroot}/{$packageName}",
             'GOBIN' => "{$pkgroot}/{$packageName}/bin",
             'GOPATH' => "{$pkgroot}/go",
         ];
     }
+
+    public static function getPath(): ?string
+    {
+        return PKG_ROOT_PATH . '/go-xcaddy/bin';
+    }
 }
diff --git a/src/SPC/store/pkg/Zig.php b/src/SPC/store/pkg/Zig.php
index 7c206f7c..e9865dbe 100644
--- a/src/SPC/store/pkg/Zig.php
+++ b/src/SPC/store/pkg/Zig.php
@@ -129,23 +129,10 @@ class Zig extends CustomPackage
 
     public static function getEnvironment(): array
     {
-        $arch = arch2gnu(php_uname('m'));
-        $os = match (PHP_OS_FAMILY) {
-            'Windows' => 'win',
-            'Darwin' => 'macos',
-            'BSD' => 'freebsd',
-            default => 'linux',
-        };
-
-        $packageName = "zig-{$arch}-{$os}";
-        $path = PKG_ROOT_PATH . "/{$packageName}";
-
-        return [
-            'PATH' => $path,
-        ];
+        return [];
     }
 
-    private static function getPath(): string
+    public static function getPath(): ?string
     {
         return PKG_ROOT_PATH . '/zig';
     }
diff --git a/src/SPC/toolchain/ZigToolchain.php b/src/SPC/toolchain/ZigToolchain.php
index 3a929f2b..8f2e261e 100644
--- a/src/SPC/toolchain/ZigToolchain.php
+++ b/src/SPC/toolchain/ZigToolchain.php
@@ -42,10 +42,10 @@ class ZigToolchain implements ToolchainInterface
 
     public function afterInit(): void
     {
-        if (!is_dir(Zig::getEnvironment()['PATH'])) {
+        if (!Zig::isInstalled()) {
             throw new EnvironmentException('You are building with zig, but zig is not installed, please install zig first. (You can use `doctor` command to install it)');
         }
-        GlobalEnvManager::addPathIfNotExists(Zig::getEnvironment()['PATH']);
+        GlobalEnvManager::addPathIfNotExists(Zig::getPath());
         f_passthru('ulimit -n 2048'); // zig opens extra file descriptors, so when a lot of extensions are built statically, 1024 is not enough
         $cflags = getenv('SPC_DEFAULT_C_FLAGS') ?: '';
         $cxxflags = getenv('SPC_DEFAULT_CXX_FLAGS') ?: '';