From c6fbab2609fa025e48076354f6fd9e95d791586c Mon Sep 17 00:00:00 2001
From: QwejayHuang <qwejayhuang@outlook.com>
Date: Thu, 17 Sep 2026 20:50:06 +0800
Subject: [PATCH] v2.9.1 - fix: resolve build size bloat, relax compiler check
 & remove UPX conflict

- Re-enable anti-bloat mechanism to prevent bloated builds with Pandas and other libraries
- Restrict UPX compression to eliminate packing warnings and conflicts in Nuitka single-file mode
- Remove strict MSVC fallback logic to prevent build failures on systems without Visual Studio
- Relax compiler rules to let Nuitka automatically select and download suitable toolchains
- Switch default packaging strategy to Lite Mode with bytecode and link-time optimizations enabled
---
 CHANGELOG.md               | 13 ++++++++++
 CHANGELOG_EN.md            | 13 ++++++++++
 pyproject.toml             |  2 +-
 qpypack/locales/ar_SA.json |  2 ++
 qpypack/locales/de_DE.json |  2 ++
 qpypack/locales/es_ES.json |  2 ++
 qpypack/locales/fr_FR.json |  2 ++
 qpypack/locales/it_IT.json |  2 ++
 qpypack/locales/ja_JP.json |  2 ++
 qpypack/locales/ko_KR.json |  2 ++
 qpypack/locales/nl_NL.json |  2 ++
 qpypack/locales/pl_PL.json |  2 ++
 qpypack/locales/pt_BR.json |  2 ++
 qpypack/locales/ru_RU.json |  2 ++
 qpypack/locales/th_TH.json |  2 ++
 qpypack/locales/tr_TR.json |  2 ++
 qpypack/locales/vi_VN.json |  2 ++
 qpypack/locales/zh_TW.json |  2 ++
 qpypack/main.py            | 49 ++++++++++++--------------------------
 19 files changed, 72 insertions(+), 35 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33b0a0e..cd5349e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,19 @@ QPyPack 项目的所有重要变更都将记录在此文件中。
 
 --
 
+## [2.9.1] - 2026-09-17
+
+### 修复
+- 修复使用 Nuitka 单文件打包时调用 UPX 产生的压缩失败警告与报错问题，恢复 UPX 仅对 PyInstaller 启用的安全策略
+- 修复 Nuitka 防膨胀插件未生效导致打包 Pandas 等第三方库时依赖扩散、生成文件体积异常暴增的问题
+- 修复未安装 Visual Studio 时因编译器判断失误强行指定 MSVC 导致的构建中断问题
+
+### 优化
+- 放开 C 编译器选择限制，无本地 MSVC 环境时交由 Nuitka 自动匹配并下载适用的轻量编译工具链（如 Zig），大幅降低打包失败率并避免文件锁死
+- 将默认打包策略调整为精简模式，默认开启字节码与链接优化，并自动剔除测试与调试等冗余模块，显著缩减最终文件体积
+
+--
+
 ## [2.9.0] - 2026-09-13
 
 ### 新增
diff --git a/CHANGELOG_EN.md b/CHANGELOG_EN.md
index 7a9d363..4cae978 100644
--- a/CHANGELOG_EN.md
+++ b/CHANGELOG_EN.md
@@ -6,6 +6,19 @@ All notable changes to the **QPyPack** project will be documented in this file.
 
 ---
 
+## [2.9.1] - 2026-09-17
+
+### Fixed
+- Fixed compression failure warnings and errors when invoking UPX during Nuitka standalone builds; restored policy ensuring UPX only applies to PyInstaller
+- Fixed abnormal binary size bloat when packaging third-party libraries like Pandas caused by disabled anti-bloat mechanisms
+- Fixed build failures on systems without Visual Studio caused by incorrect compiler fallback logic enforcing MSVC
+
+### Improved
+- Relaxed C compiler restrictions to let Nuitka automatically match and download appropriate lightweight toolchains (such as Zig) when local MSVC is missing, reducing build failures and file lock issues
+- Set Lite Mode as the default packaging strategy, enabling bytecode and link-time optimizations while excluding redundant test and debug modules to significantly reduce output size
+
+---
+
 ## [2.9.0] - 2026-09-13
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 7b1b55c..a74e654 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "qpypack"
-version = "2.9.0"
+version = "2.9.1"
 description = "A cross-platform GUI packaging and compilation suite based on PyInstaller and Nuitka."
 readme = "README_EN.md"
 authors = [
diff --git a/qpypack/locales/ar_SA.json b/qpypack/locales/ar_SA.json
index b853d5c..52c0d13 100644
--- a/qpypack/locales/ar_SA.json
+++ b/qpypack/locales/ar_SA.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "مفصولة بفواصل (مثل pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "مفصولة بفواصل (مثل tkinter, matplotlib)",
   "Commercial PFX File:": "ملف PFX تجاري:",
+  "Compatibility Mode": "وضع التوافق",
   "Compatibility Mode (Default)": "وضع التوافق (الافتراضي)",
   "Compatibility depends on build environment glibc version.": "يعتمد التوافق على إصدار glibc في بيئة البناء.",
   "Concise Log Output": "إخراج سجل موجز",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] تم تمكين الوضع الخفيف، تطبيق تحسين البايت كود (-OO) وإزالة وحدات التطوير...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] لم يتم اكتشاف MSVC 14.3+. سيستخدم Nuitka سلسلة أدوات MinGW64 أو يقوم بتنزيلها (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] لم يتم اكتشاف مترجم C محلي. سيقوم Nuitka تلقائيًا بتنزيل وإدارة مجموعة أدوات MinGW-w64 المتوافقة.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] لم يتم اكتشاف MSVC محلي. سيقوم Nuitka بإدارة وتنزيل سلسلة أدوات مترجم C المثلى تلقائيًا.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] نصيحة Nuitka: إذا طُلب منك تنزيل مترجم GCC/MinGW في البناء الأول، فيرجى التأكد من استقرار اتصال الشبكة.",
   "[INFO] Old venv renamed to: {name}": "[INFO] تمت إعادة تسمية البيئة الافتراضية القديمة إلى: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] إجراء فحوصات بيئية أولية...",
diff --git a/qpypack/locales/de_DE.json b/qpypack/locales/de_DE.json
index 12cd83c..e38e98b 100644
--- a/qpypack/locales/de_DE.json
+++ b/qpypack/locales/de_DE.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Durch Kommas getrennt (z. B. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Durch Kommas getrennt (z. B. tkinter, matplotlib)",
   "Commercial PFX File:": "Kommerzielle PFX-Datei:",
+  "Compatibility Mode": "Kompatibilitätsmodus",
   "Compatibility Mode (Default)": "Kompatibilitätsmodus (Standard)",
   "Compatibility depends on build environment glibc version.": "Kompatibilität hängt von der glibc-Version der Build-Umgebung ab.",
   "Concise Log Output": "Kompakte Protokollausgabe",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Lite-Modus aktiviert, wende Bytecode-Optimierung (-OO) an und entferne Entwicklungsmodule...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ nicht erkannt. Nuitka wird die MinGW64-Toolchain verwenden/herunterladen (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Kein lokaler C-Compiler erkannt. Nuitka wird automatisch eine kompatible MinGW-w64-Toolchain herunterladen und verwalten.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Kein lokales MSVC erkannt. Nuitka wird die optimale C-Compiler-Toolchain automatisch verwalten und herunterladen.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitka-Tipp: Wenn beim ersten Build zum Herunterladen des GCC/MinGW-Compilers aufgefordert wird, stellen Sie bitte eine stabile Netzwerkverbindung sicher.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Alte Venv umbenannt in: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Führe Vorab-Umgebungsprüfungen durch...",
diff --git a/qpypack/locales/es_ES.json b/qpypack/locales/es_ES.json
index 8d6aa39..7669b7b 100644
--- a/qpypack/locales/es_ES.json
+++ b/qpypack/locales/es_ES.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Separados por comas (ej. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Separados por comas (ej. tkinter, matplotlib)",
   "Commercial PFX File:": "Archivo PFX comercial:",
+  "Compatibility Mode": "Modo de compatibilidad",
   "Compatibility Mode (Default)": "Modo de compatibilidad (predeterminado)",
   "Compatibility depends on build environment glibc version.": "La compatibilidad depende de la versión de glibc del entorno de compilación.",
   "Concise Log Output": "Salida de registro concisa",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Modo ligero habilitado, aplicando optimización de bytecode (-OO) y eliminando módulos de desarrollo...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ no detectado. Nuitka usará/descargará la cadena de herramientas MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] No se detectó compilador C local. Nuitka descargará y gestionará automáticamente un kit de herramientas MinGW-w64 compatible.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] No se detectó MSVC local. Nuitka gestionará y descargará automáticamente la cadena de herramientas del compilador C óptima.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Consejo de Nuitka: Si se le solicita descargar el compilador GCC/MinGW en la primera compilación, asegúrese de tener una conexión de red estable.",
   "[INFO] Old venv renamed to: {name}": "[INFO] El venv antiguo se renombró a: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Realizando comprobaciones previas del entorno...",
diff --git a/qpypack/locales/fr_FR.json b/qpypack/locales/fr_FR.json
index 51bb05c..53fd828 100644
--- a/qpypack/locales/fr_FR.json
+++ b/qpypack/locales/fr_FR.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Séparés par des virgules (ex. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Séparés par des virgules (ex. tkinter, matplotlib)",
   "Commercial PFX File:": "Fichier PFX commercial :",
+  "Compatibility Mode": "Mode de compatibilité",
   "Compatibility Mode (Default)": "Mode de compatibilité (par défaut)",
   "Compatibility depends on build environment glibc version.": "La compatibilité dépend de la version de glibc de l'environnement de construction.",
   "Concise Log Output": "Sortie de journal concise",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Mode léger activé, application de l'optimisation du bytecode (-OO) et suppression des modules de développement...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ non détecté. Nuitka utilisera/téléchargera la chaîne d'outils MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Aucun compilateur C local détecté. Nuitka téléchargera et gérera automatiquement une chaîne d'outils MinGW-w64 compatible.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Aucun MSVC local détecté. Nuitka gérera et téléchargera automatiquement la chaîne d'outils de compilateur C optimale.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Astuce Nuitka : Si vous êtes invité à télécharger le compilateur GCC/MinGW lors de la première construction, assurez-vous d'avoir une connexion réseau stable.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Ancien venv renommé en : {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Exécution des vérifications préalables de l'environnement...",
diff --git a/qpypack/locales/it_IT.json b/qpypack/locales/it_IT.json
index dec7395..c176b11 100644
--- a/qpypack/locales/it_IT.json
+++ b/qpypack/locales/it_IT.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Separati da virgola (es. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Separati da virgola (es. tkinter, matplotlib)",
   "Commercial PFX File:": "File PFX commerciale:",
+  "Compatibility Mode": "Modalità di compatibilità",
   "Compatibility Mode (Default)": "Modalità compatibilità (predefinita)",
   "Compatibility depends on build environment glibc version.": "La compatibilità dipende dalla versione di glibc dell'ambiente di build.",
   "Concise Log Output": "Output di log conciso",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Modalità Lite attivata, applicazione ottimizzazione bytecode (-OO) e rimozione moduli di sviluppo...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ non rilevato. Nuitka userà/scaricherà la toolchain MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Nessun compilatore C locale rilevato. Nuitka scaricherà e gestirà automaticamente una toolchain MinGW-w64 compatibile.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Nessun MSVC locale rilevato. Nuitka gestirà automaticamente e scaricherà la toolchain del compilatore C ottimale.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Suggerimento Nuitka: Se al primo build viene richiesto di scaricare il compilatore GCC/MinGW, assicurarsi di avere una connessione di rete stabile.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Vecchio venv rinominato in: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Esecuzione controlli ambientali preliminari...",
diff --git a/qpypack/locales/ja_JP.json b/qpypack/locales/ja_JP.json
index 2ea0dc7..6de008e 100644
--- a/qpypack/locales/ja_JP.json
+++ b/qpypack/locales/ja_JP.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "逗号分隔（例如：pandas, PyQt5）",
   "Comma separated (e.g. tkinter, matplotlib)": "逗号分隔（例如：tkinter, matplotlib）",
   "Commercial PFX File:": "商用PFXファイル：:",
+  "Compatibility Mode": "互換モード",
   "Compatibility Mode (Default)": "互換モード（デフォルト）",
   "Compatibility depends on build environment glibc version.": "互換性はビルド環境のglibcバージョンに依存します。",
   "Concise Log Output": "簡潔なログ出力",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] ライトモードが有効です。バイトコード最適化 (-OO) を適用し、開発モジュールを削除しています...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+が検出されませんでした。NuitkaはMinGW64ツールチェーンを使用/ダウンロードします（Python {v}）。",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] ローカルのCコンパイラが検出されませんでした。Nuitkaが互換性のあるMinGW-w64ツールチェーンを自動的にダウンロードして管理します。",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] ローカルのMSVCが検出されませんでした。Nuitkaが最適なCコンパイラツールチェーンを自動管理してダウンロードします。",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitkaのヒント: 初回ビルド時にGCC/MinGWコンパイラのダウンロードを求められた場合は、安定したネットワーク接続を確保してください。",
   "[INFO] Old venv renamed to: {name}": "[INFO] 古いvenvは次の名前に変更されました: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] 事前環境チェックを実行中...",
diff --git a/qpypack/locales/ko_KR.json b/qpypack/locales/ko_KR.json
index c74cccc..8df682f 100644
--- a/qpypack/locales/ko_KR.json
+++ b/qpypack/locales/ko_KR.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "쉼표로 구분 (예: pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "쉼표로 구분 (예: tkinter, matplotlib)",
   "Commercial PFX File:": "상업용 PFX 파일:",
+  "Compatibility Mode": "호환 모드",
   "Compatibility Mode (Default)": "호환 모드 (기본값)",
   "Compatibility depends on build environment glibc version.": "호환성은 빌드 환경의 glibc 버전에 따라 달라집니다.",
   "Concise Log Output": "간결한 로그 출력",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] 라이트 모드가 활성화되어 바이트코드 최적화(-OO) 및 개발 모듈 제거를 적용하는 중...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+가 감지되지 않았습니다. Nuitka는 MinGW64 툴체인을 사용/다운로드합니다(Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] 로컬 C 컴파일러가 감지되지 않았습니다. Nuitka가 호환되는 MinGW-w64 툴체인을 자동으로 다운로드하고 관리합니다.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] 로컬 MSVC가 감지되지 않았습니다. Nuitka가 최적의 C 컴파일러 툴체인을 자동으로 관리하고 다운로드합니다.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitka 팁: 첫 빌드 시 GCC/MinGW 컴파일러 다운로드가 요청되면 안정적인 네트워크 연결을 확인하세요.",
   "[INFO] Old venv renamed to: {name}": "[INFO] 이전 venv가 다음 이름으로 변경되었습니다: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] 사전 환경 점검을 수행하는 중...",
diff --git a/qpypack/locales/nl_NL.json b/qpypack/locales/nl_NL.json
index 7add1b4..cabfaa8 100644
--- a/qpypack/locales/nl_NL.json
+++ b/qpypack/locales/nl_NL.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Komma gescheiden (bijv. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Komma gescheiden (bijv. tkinter, matplotlib)",
   "Commercial PFX File:": "Commercieel PFX-bestand:",
+  "Compatibility Mode": "Compatibiliteitsmodus",
   "Compatibility Mode (Default)": "Compatibiliteitsmodus (standaard)",
   "Compatibility depends on build environment glibc version.": "Compatibiliteit hangt af van de glibc-versie van de buildomgeving.",
   "Concise Log Output": "Beknopte loguitvoer",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Lite-modus ingeschakeld, bytecode-optimalisatie (-OO) toepassen en dev-modules strippen...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ niet gedetecteerd. Nuitka zal MinGW64-toolchain gebruiken/downloaden (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Geen lokale C-compiler gedetecteerd. Nuitka zal automatisch een compatibele MinGW-w64-toolchain downloaden en beheren.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Geen lokale MSVC gedetecteerd. Nuitka beheert en downloadt automatisch de optimale C-compiler-toolchain.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitka-tip: Als u bij de eerste build wordt gevraagd om GCC/MinGW-compiler te downloaden, zorg dan voor een stabiele netwerkverbinding.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Oude venv hernoemd naar: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Pre-flight-omgevingscontroles uitvoeren...",
diff --git a/qpypack/locales/pl_PL.json b/qpypack/locales/pl_PL.json
index fd02f30..02294bc 100644
--- a/qpypack/locales/pl_PL.json
+++ b/qpypack/locales/pl_PL.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Oddzielone przecinkami (np. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Oddzielone przecinkami (np. tkinter, matplotlib)",
   "Commercial PFX File:": "Komercyjny plik PFX:",
+  "Compatibility Mode": "Tryb zgodności",
   "Compatibility Mode (Default)": "Tryb zgodności (domyślny)",
   "Compatibility depends on build environment glibc version.": "Zgodność zależy od wersji glibc środowiska budowania.",
   "Concise Log Output": "Zwięzłe wyjście dziennika",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Tryb Lite włączony, stosowanie optymalizacji bytecode (-OO) i usuwanie modułów deweloperskich...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] Nie wykryto MSVC 14.3+. Nuitka użyje/pobierze narzędzia MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Nie wykryto lokalnego kompilatora C. Nuitka automatycznie pobierze i zarządza kompatybilnym zestawem narzędzi MinGW-w64.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Nie wykryto lokalnego MSVC. Nuitka automatycznie zarządza i pobiera optymalny zestaw narzędzi kompilatora C.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Wskazówka Nuitka: Jeśli przy pierwszym budowaniu pojawi się monit o pobranie kompilatora GCC/MinGW, upewnij się, że masz stabilne połączenie sieciowe.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Stare venv zostało przemianowane na: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Wykonywanie wstępnych kontroli środowiska...",
diff --git a/qpypack/locales/pt_BR.json b/qpypack/locales/pt_BR.json
index 369b845..ca5e05b 100644
--- a/qpypack/locales/pt_BR.json
+++ b/qpypack/locales/pt_BR.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Separados por vírgula (ex.: pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Separados por vírgula (ex.: tkinter, matplotlib)",
   "Commercial PFX File:": "Arquivo PFX Comercial:",
+  "Compatibility Mode": "Modo de Compatibilidade",
   "Compatibility Mode (Default)": "Modo de Compatibilidade (Padrão)",
   "Compatibility depends on build environment glibc version.": "A compatibilidade depende da versão do glibc do ambiente de compilação.",
   "Concise Log Output": "Saída de Log Concisa",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Modo leve ativado, aplicando otimização de bytecode (-OO) e removendo módulos de desenvolvimento...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ não detectado. Nuitka usará/baixará a ferramenta MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Nenhum compilador C local detectado. O Nuitka baixará e gerenciará automaticamente um toolchain MinGW-w64 compatível.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Nenhum MSVC local detectado. O Nuitka irá gerenciar e baixar automaticamente o conjunto de ferramentas de compilador C ideal.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Dica do Nuitka: Se for solicitado o download do compilador GCC/MinGW na primeira compilação, garanta uma conexão de rede estável.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Venv antigo renomeado para: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Executando verificações de ambiente pré-voo...",
diff --git a/qpypack/locales/ru_RU.json b/qpypack/locales/ru_RU.json
index d9e0e8c..3e89acf 100644
--- a/qpypack/locales/ru_RU.json
+++ b/qpypack/locales/ru_RU.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Через запятую (например, pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Через запятую (например, tkinter, matplotlib)",
   "Commercial PFX File:": "Коммерческий PFX-файл:",
+  "Compatibility Mode": "Режим совместимости",
   "Compatibility Mode (Default)": "Режим совместимости (по умолчанию)",
   "Compatibility depends on build environment glibc version.": "Совместимость зависит от версии glibc в среде сборки.",
   "Concise Log Output": "Краткий вывод журнала",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Включен облегченный режим, применяется оптимизация байт-кода (-OO) и удаление dev-модулей...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ не обнаружен. Nuitka будет использовать/загружать набор инструментов MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Локальный компилятор C не обнаружен. Nuitka автоматически загрузит и установит совместимый инструментарий MinGW-w64.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Локальный MSVC не обнаружен. Nuitka автоматически управляет и загружает оптимальный набор инструментов компилятора C.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Совет Nuitka: Если при первой сборке появится запрос на загрузку компилятора GCC/MinGW, убедитесь в стабильном сетевом соединении.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Старая виртуальная среда переименована в: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Выполнение предварительных проверок окружения...",
diff --git a/qpypack/locales/th_TH.json b/qpypack/locales/th_TH.json
index 0ca36cc..053bee1 100644
--- a/qpypack/locales/th_TH.json
+++ b/qpypack/locales/th_TH.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "คั่นด้วยเครื่องหมายจุลภาค (เช่น pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "คั่นด้วยเครื่องหมายจุลภาค (เช่น tkinter, matplotlib)",
   "Commercial PFX File:": "ไฟล์ PFX เชิงพาณิชย์:",
+  "Compatibility Mode": "โหมดความเข้ากันได้",
   "Compatibility Mode (Default)": "โหมดความเข้ากันได้ (ค่าเริ่มต้น)",
   "Compatibility depends on build environment glibc version.": "ความเข้ากันได้ขึ้นอยู่กับเวอร์ชัน glibc ของสภาพแวดล้อมการสร้าง",
   "Concise Log Output": "เอาต์พุตบันทึกแบบกระชับ",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] เปิดใช้โหมด Lite ใช้การปรับไบต์โค้ด (-OO) และลบโมดูล dev...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] ไม่พบ MSVC 14.3+ Nuitka จะใช้/ดาวน์โหลดชุดเครื่องมือ MinGW64 (Python {v})",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] ไม่พบคอมไพเลอร์ C ในเครื่อง Nuitka จะดาวน์โหลดและจัดการชุดเครื่องมือ MinGW-w64 ที่เข้ากันได้โดยอัตโนมัติ",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] ไม่ตรวจพบ MSVC ในเครื่อง Nuitka จะจัดการและดาวน์โหลดชุดเครื่องมือคอมไพเลอร์ C ที่เหมาะสมที่สุดโดยอัตโนมัติ",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] เคล็ดลับ Nuitka: หากได้รับแจ้งให้ดาวน์โหลดคอมไพเลอร์ GCC/MinGW ในการสร้างครั้งแรก โปรดตรวจสอบการเชื่อมต่อเครือข่ายที่เสถียร",
   "[INFO] Old venv renamed to: {name}": "[INFO] เปลี่ยนชื่อ venv เก่าเป็น: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] กำลังตรวจสอบสภาพแวดล้อมก่อนเริ่มต้น...",
diff --git a/qpypack/locales/tr_TR.json b/qpypack/locales/tr_TR.json
index 608970d..87848ef 100644
--- a/qpypack/locales/tr_TR.json
+++ b/qpypack/locales/tr_TR.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Virgülle ayrılmış (ör. pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Virgülle ayrılmış (ör. tkinter, matplotlib)",
   "Commercial PFX File:": "Ticari PFX Dosyası:",
+  "Compatibility Mode": "Uyumluluk Modu",
   "Compatibility Mode (Default)": "Uyumluluk Modu (Varsayılan)",
   "Compatibility depends on build environment glibc version.": "Uyumluluk, derleme ortamının glibc sürümüne bağlıdır.",
   "Concise Log Output": "Öz Günlük Çıktısı",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Hafif mod etkin, bayt kodu optimizasyonu (-OO) uygulanıyor ve geliştirici modülleri kaldırılıyor...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] MSVC 14.3+ algılanmadı. Nuitka, MinGW64 araç setini kullanacak/indirecek (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Yerel C derleyicisi algılanmadı. Nuitka otomatik olarak uyumlu bir MinGW-w64 araç zincirini indirip yönetecek.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Yerel MSVC algılanmadı. Nuitka en uygun C derleyici araç zincirini otomatik olarak yönetip indirecek.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitka İpucu: İlk derlemede GCC/MinGW derleyicisini indirmeniz istenirse, lütfen istikrarlı bir ağ bağlantısı sağlayın.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Eski venv şu şekilde yeniden adlandırıldı: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Ön kontrol ortam kontrolleri yapılıyor...",
diff --git a/qpypack/locales/vi_VN.json b/qpypack/locales/vi_VN.json
index 3ff506f..00da0da 100644
--- a/qpypack/locales/vi_VN.json
+++ b/qpypack/locales/vi_VN.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "Phân tách bằng dấu phẩy (ví dụ: pandas, PyQt5)",
   "Comma separated (e.g. tkinter, matplotlib)": "Phân tách bằng dấu phẩy (ví dụ: tkinter, matplotlib)",
   "Commercial PFX File:": "Tệp PFX thương mại:",
+  "Compatibility Mode": "Chế độ tương thích",
   "Compatibility Mode (Default)": "Chế độ tương thích (Mặc định)",
   "Compatibility depends on build environment glibc version.": "Khả năng tương thích phụ thuộc vào phiên bản glibc của môi trường xây dựng.",
   "Concise Log Output": "Đầu ra nhật ký ngắn gọn",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] Chế độ Lite được bật, áp dụng tối ưu hóa bytecode (-OO) và loại bỏ các mô-đun dev...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] Không phát hiện MSVC 14.3+. Nuitka sẽ sử dụng/tải xuống bộ công cụ MinGW64 (Python {v}).",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] Không phát hiện trình biên dịch C cục bộ. Nuitka sẽ tự động tải xuống và quản lý bộ công cụ MinGW-w64 tương thích.",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] Không phát hiện MSVC cục bộ. Nuitka sẽ tự động quản lý và tải xuống bộ công cụ trình biên dịch C tối ưu.",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Mẹo Nuitka: Nếu được nhắc tải xuống trình biên dịch GCC/MinGW trong lần xây dựng đầu tiên, vui lòng đảm bảo kết nối mạng ổn định.",
   "[INFO] Old venv renamed to: {name}": "[INFO] Venv cũ đã được đổi tên thành: {name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] Đang thực hiện kiểm tra môi trường sơ bộ...",
diff --git a/qpypack/locales/zh_TW.json b/qpypack/locales/zh_TW.json
index d5d7e0b..9444143 100644
--- a/qpypack/locales/zh_TW.json
+++ b/qpypack/locales/zh_TW.json
@@ -63,6 +63,7 @@
   "Comma separated (e.g. pandas, PyQt5)": "逗號分隔（例如 pandas, PyQt5）",
   "Comma separated (e.g. tkinter, matplotlib)": "逗號分隔（例如 tkinter, matplotlib）",
   "Commercial PFX File:": "商業 PFX 檔案：:",
+  "Compatibility Mode": "相容模式",
   "Compatibility Mode (Default)": "相容性模式（預設）",
   "Compatibility depends on build environment glibc version.": "相容性取決於建置環境的 glibc 版本。",
   "Concise Log Output": "簡潔日誌輸出",
@@ -357,6 +358,7 @@
   "[INFO] Lite mode enabled, applying bytecode optimization (-OO) and stripping dev modules...": "[INFO] 已啟用精簡模式，套用位元組碼最佳化 (-OO) 並移除開發模組...",
   "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).": "[INFO] 未偵測到 MSVC 14.3+。Nuitka 將使用/下載 MinGW64 工具鏈（Python {v}）。",
   "[INFO] No local C compiler detected. Nuitka will automatically download and manage a compatible MinGW-w64 toolchain.": "[INFO] 未偵測到本機 C 編譯器。Nuitka 將自動下載並管理相容的 MinGW-w64 工具鏈。",
+  "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] 未偵測到本機 MSVC。Nuitka 將自動管理並下載最佳的 C 編譯器工具鏈。",
   "[INFO] Nuitka Tip: If prompted to download GCC/MinGW compiler on first build, please ensure stable network connection.": "[INFO] Nuitka 提示：若首次建置時提示下載 GCC/MinGW 編譯器，請確保網路連線穩定。",
   "[INFO] Old venv renamed to: {name}": "[INFO] 舊的虛擬環境已重新命名為：{name}",
   "[INFO] Performing pre-flight environment checks...": "[INFO] 正在執行前置環境檢查...",
diff --git a/qpypack/main.py b/qpypack/main.py
index b531f62..86fe651 100644
--- a/qpypack/main.py
+++ b/qpypack/main.py
@@ -125,7 +125,7 @@ except ImportError:
     HAS_QT_AUDIO = False
 
 __app_name__ = "QPyPack"
-__version__ = "2.9.0"
+__version__ = "2.9.1"
 __author__ = "QwejayHuang"
 __company__ = "Qwesoft"
 __description__ = "Modern Cross-Platform Python Packaging GUI Powered by PyInstaller & Nuitka"
@@ -596,6 +596,8 @@ ZH_CN_DICT = {
     "[SUCCESS] Corrupted cache cleared. Please add Nuitka cache to antivirus whitelist, or switch to PyInstaller engine and retry.": "[SUCCESS] 损坏缓存已清空。请将 Nuitka 缓存目录加入杀软白名单，或切换至 PyInstaller 引擎后重试。",
     "[CRITICAL] Paddle detected! Call 'multiprocessing.freeze_support()' under 'if __name__ == \"__main__\":' in your entry script, or the packaged app will spawn infinite processes and exhaust memory.":
         "[严重警告] 检测到使用了 Paddle 库！请务必在入口脚本的 'if __name__ == \"__main__\":' 下调用 'multiprocessing.freeze_support()'，否则打包后的程序运行会导致无限弹窗派生并耗尽内存。",
+    "Compatibility Mode": "兼容模式",
+    "[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain.": "[INFO] 未检测到本地 MSVC。Nuitka 将自动管理并下载最优的 C 编译器工具链。",
     "Unknown": "未知"
 }
 
@@ -944,7 +946,7 @@ def load_config(retry=True):
             "pyi_version": "6.21.0",
             "nuitka_version": "4.1.3",
             "enable_backport_shield": "True",
-            "lite_mode": "False",
+            "lite_mode": "True",
         }
         for k, v in settings_defaults.items():
             config.set("Settings", k, v)
@@ -3137,9 +3139,9 @@ class SettingsPanel(QWidget):
         h_icon.addWidget(self.icon_preview)
         h_icon.addWidget(self.btn_icon)
 
-        self.rb_compat_mode = QRadioButton(_("Compatibility Mode (Default)"))
+        self.rb_compat_mode = QRadioButton(_("Compatibility Mode"))
         self.rb_lite_mode = QRadioButton(_("Lite Mode (Smaller size)"))
-        self.rb_compat_mode.setChecked(True)
+        self.rb_lite_mode.setChecked(True)
 
         pack_mode_cont = QWidget()
         h_pack_mode = QHBoxLayout(pack_mode_cont)
@@ -4394,7 +4396,7 @@ class SettingsPanel(QWidget):
 
             self.engine_combo.setCurrentText(s.get("engine", "PyInstaller"))
 
-            is_lite = s.getboolean("lite_mode", False)
+            is_lite = s.getboolean("lite_mode", True)
             self.rb_lite_mode.setChecked(is_lite)
             self.rb_compat_mode.setChecked(not is_lite)
 
@@ -4579,8 +4581,9 @@ class SettingsPanel(QWidget):
             )
 
         if getattr(self, "upx_check", None) is not None and getattr(self, "upx_path_container", None) is not None:
-            self.upx_check.setVisible(True)
-            self.upx_path_container.setVisible(self.upx_check.isChecked())
+            is_pyi = (engine == "PyInstaller")
+            self.upx_check.setVisible(is_pyi)
+            self.upx_path_container.setVisible(is_pyi and self.upx_check.isChecked())
 
     def on_python_path_changed(self, text=""):
         raw_text = text or self.python_path_combo.currentText().strip()
@@ -6310,7 +6313,7 @@ class PackingThread(QThread):
                     "-m",
                     "nuitka",
                     "--assume-yes-for-downloads",
-                    # "--enable-plugin=anti-bloat",
+                    "--enable-plugin=anti-bloat",
                     f"--output-dir={self.temp_out_dir.as_posix()}",
                     f"--output-filename={app_name}{ext}",
                 ]
@@ -6393,30 +6396,8 @@ class PackingThread(QThread):
                     if has_suitable_msvc and has_win_sdk:
                         cmd.append("--msvc=latest")
                         self.progress.emit(_("[INFO] Found compatible MSVC + Windows SDK environment, using native compiler."))
-
-                    elif py_ver_num >= (3, 13) and is_64bit:
-                        cmd.append("--zig")
-                        self.progress.emit(_("[INFO] Python 3.13+ detected: Using Zig compiler (--zig) as native backend."))
-
-                    elif py_ver_num <= (3, 12):
-                        cmd.append("--mingw64")
-                        if not has_suitable_msvc and py_ver_num >= (3, 11):
-                            self.progress.emit(
-                                _(
-                                    "[INFO] MSVC 14.3+ not detected. Nuitka will use/download MinGW64 toolchain (Python {v}).",
-                                    v=f"{py_ver_num[0]}.{py_ver_num[1]}",
-                                )
-                            )
-                        else:
-                            self.progress.emit(_("[INFO] Using MinGW64 compiler."))
-
                     else:
-                        cmd.append("--msvc=latest")
-                        self.progress.emit(
-                            _(
-                                "[WARN] Python 3.13+ (32-bit) requires Visual Studio 2022 with Windows SDK. Build will attempt with current environment."
-                            )
-                        )
+                        self.progress.emit(_("[INFO] No local MSVC detected. Nuitka will auto-manage and download the optimal C compiler toolchain."))
 
                 if free_disk < 3.0:
                     self.progress.emit(
@@ -6467,7 +6448,7 @@ class PackingThread(QThread):
                         cores = safe_jobs
                 cmd.append(f"--jobs={cores}")
 
-                if self.params.get("upx"):
+                if self.params.get("upx") and not self.params.get("onefile"):
                     cmd.append("--enable-plugin=upx")
                     upx_dir_custom = (self.params.get("upx_path") or "").strip()
                     if upx_dir_custom and Path(upx_dir_custom).exists():
@@ -8140,7 +8121,7 @@ class MainWindow(QMainWindow):
             "reqs_file": sp.reqs_file_edit.text().strip(),
             "hidden_imports": sp.hidden_edit.text(),
             "add_data_list": add_data_items,
-            "upx": sp.upx_check.isChecked(),
+            "upx": sp.upx_check.isChecked() if engine == "PyInstaller" else False,
             "upx_path": sp.upx_path_edit.text().strip(),
             "cpu_cores": sp.cores_spin.value(),
             "exclude_modules": sp.exclude_edit.text().strip(),
@@ -8565,4 +8546,4 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()