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generating-python-installer

Creates Python program installers for Windows that are small and start quickly. It's ideal for distributing Python applications as a professional and efficient package.

What it does

This agent helps turn your Python program into an installer for Windows. It focuses on making the installer as small and fast as possible using advanced tools.

When to use it

  • ✓When you need to distribute a Python program to Windows users.
  • ✓If you want your program's installer to be as small as possible.
  • ✓If your program's startup speed is very important.

Example of what to ask your AI

“Turn my Python program into a small and fast installer for Windows.”

Want more? Open the sections below.

How to use

The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.

Skill link

https://github.com/affaan-m/ECC/blob/main/skills/generating-python-installer/SKILL.md

Ready-to-paste message

Use this skill to help me: https://github.com/affaan-m/ECC/blob/main/skills/generating-python-installer/SKILL.md Read the SKILL.md file at that link and follow its instructions for my task.
How it works

It uses tools like Nuitka to compile your Python code in an optimized way and Inno Setup to create a professional installation package. The process includes removing unnecessary files and analyzing libraries to reduce the final size.

Installation

Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.

In the terminal (Claude Code, Codex, Cursor), in your project folder:

npx skills add affaan-m/ECC --skill generating-python-installer

Or download just the file:

curl -L https://raw.githubusercontent.com/affaan-m/ECC/main/skills/generating-python-installer/SKILL.md -o SKILL.md
Technical content (original SKILL.md)

Original text by the author, straight from GitHub.

Generating Python Installer (Commercial-Grade)

You are a Python commercial deployment expert. Your goal is the smallest, fastest-starting, cleanest Windows installer. The core approach is "Nuitka folder mode (dist) + Inno Setup packaging" — no single-file builds, no stray console window.

When to Activate

Activate when the user explicitly asks for advanced Python packaging or size/startup optimization on Windows:

  • Nuitka extreme / commercial-grade compilation, smallest-size or fastest-startup builds
  • dist folder slimming, DLL footprint analysis, 32-bit vs 64-bit size tradeoffs
  • Inno Setup packaging with full metadata and a clean, residue-free uninstall

This skill targets advanced size/startup optimization — not basic one-file "script to exe" conversion.

How It Works

  1. Confirm build parameters — app name, version, publisher, exe name, source/output dirs, icon. Never auto-fill; ask the user.
  2. Verify the source build — console disabled, LTO enabled, VC++ runtime present.
  3. Compile with Nuitka using the module-exclusion and plugin strategy below.
  4. Slim the dist folder — strip debug symbols, caches, tests, and docs, with safeguards for runtime-required metadata.
  5. Analyze DLLs to find and trim the largest dependencies.
  6. Package with Inno Setup — LZMA2 ultra compression, full metadata, residue-free uninstall, and an arch-matched VC++ redistributable.

Examples

  • "用 Nuitka 把这个 PySide2 项目打成最小体积的商业安装包" → run the full workflow: recommend 32-bit, exclude WebEngine/3D/Charts, slim dist, package with Inno Setup.
  • "我的 exe 有 400 MB,怎么瘦身到一半" → analyze DLLs, switch to opencv-python-headless, drop opengl32sw, apply dist slimming.
  • "安装后在纯净系统打不开" → ensure the matching-arch VC++ redistributable is bundled in the Inno Setup script.

核心理念

坚持 "Nuitka 文件夹模式(dist) + Inno Setup 封装" 方案。拒绝单文件版,拒绝黑窗。


实战参考案例(生产级 PySide2 桌面应用,323 MB,含 OpenCV / Playwright)

项目概况

  • 总体积: 323 MB
  • 打包工具: PyInstaller 4.7 (32位)
  • 主要依赖: PySide2 (22.52 MB), OpenCV (62.38 MB), Playwright (76.74 MB)
  • Python 版本: Python 3.8 (32位)
  • DLL 数量: 71 个,总计 93.23 MB

关键优化策略

  1. PASS: 使用 32 位 Python → 体积减少 20-30%
  2. PASS: base_library.zip 压缩标准库 → 0.74 MB
  3. PASS: 精简模块排除 → 无 pytest/unittest/setuptools
  4. PASS: 精简 Qt 插件 → 只保留必要插件

体积分布

组件 体积 占比 优化建议
playwright 76.74 MB 23.8% 非必要可移除
OpenCV 62.38 MB 19.3% 用 opencv-python-headless
PySide2 22.52 MB 7.0% 排除 WebEngine/3D/Charts
其他依赖 161.36 MB 49.9% -

预期效果对比

项目类型 Nuitka 原始 优化后 参考项目实测
Tkinter + 标准库 150-250 MB 80-120 MB -
PyQt/PySide 200-400 MB 120-250 MB 323 MB (含 OpenCV 等)
含 numpy/pandas 300-600 MB 180-350 MB -

核心工作流 (Workflow) - WARNING: 严格执行

当用户请求打包时,按照以下步骤操作:

步骤 1:强制参数确认(FAIL: 禁止使用默认值)

WARNING: 重要规则:以下所有参数必须逐一向用户确认,禁止自动填充或使用默认值!

必须向用户询问并确认以下信息(等待用户明确回复后才能继续):

参数 说明 示例
软件名称 (App Name) 软件显示名称 红墨批注
版本号 (Version) 语义化版本号 1.0.0
发布者/公司名 (Publisher) 控制面板显示的发布者 YourCompany
主程序 (Exe Name) 主可执行文件名 RedInk.exe
源路径 (Source Dir) Nuitka dist 文件夹绝对路径 D:\project\dist
输出路径 (Output Dir) 安装包生成位置 D:\project\output
图标路径 (Icon Path) .ico 文件绝对路径(可选但推荐) D:\project\icon.ico
官网地址 (URL) 可选,用于控制面板链接 https://example.com

询问模板:

"请提供以下打包参数,我需要您逐一确认:

  1. 软件名称:
  2. 版本号:
  3. 发布者/公司名:
  4. 主程序文件名(如 xxx.exe):
  5. 源路径(Nuitka dist 文件夹):
  6. 输出路径(安装包保存位置):
  7. 图标路径(.ico 文件,可留空):
  8. 官网地址(可留空):

请逐一填写,或回复"跳过"表示使用空值。"

步骤 2:源文件质量与编译检查(关键) 在生成代码之前,必须向用户发出以下关键确认(因为 Inno Setup 只是打包工具,无法改变程序本身的运行属性):

"WARNING: 编译参数检查:

  1. 去黑窗:请确认您的 dist 文件夹是使用 nuitka --windows-console-mode=disable 编译的。(否则安装后依然会有黑框)
  2. 高性能:请确认是否使用了 --lto=yes。(否则启动速度可能不理想)
  3. 运行库:请确保 dist 文件夹内已包含必要的 VC++ 运行库,防止在纯净系统上无法运行。

确认源文件已准备好请回复"确认",否则请先重新编译。"

步骤 3:生成代码 用户确认后,输出包含 完整元数据 和 卸载图标修复 的代码。


Nuitka 极限优化编译(基于 参考项目经验)

一、32 位 vs 64 位选择策略

参考项目使用 32 位 Python 的原因:

组件 64位体积 32位体积 节省
python3x.dll ~4.5 MB ~3.8 MB 15%
Qt5Core.dll ~8 MB ~5 MB 37%
numpy ~30 MB ~20 MB 33%
总体 基准 -20~30% -

推荐使用 32 位条件:

  • PASS: 程序内存占用 < 2GB
  • PASS: 不处理超大文件(< 2GB)

…

FAQ

Is this for creating a single executable file?

No, this agent focuses on creating installers with a folder of files and a clean uninstaller, not a single executable file.

My program uses heavy libraries like OpenCV. Will this work?

Yes, the agent can analyze and optimize library sizes, and may recommend lighter alternatives if available, to reduce the total installer size.

Will the installer work on any Windows computer?

The agent ensures the installer includes necessary libraries (like the Visual C++ Redistributable) to run on clean Windows systems, minimizing compatibility issues.

Details

Original description by the author

Commercial-grade Python installer expert for Windows: Nuitka extreme compilation, dist slimming, DLL footprint analysis, and Inno Setup packaging to ship the smallest, fastest installers. Use when a Python app must ship as a minimal, fast-starting Windows installer; not for basic script-to-exe conversion. 中文触发:Nuitka 极限优化、Python 商业打包、极限编译 Python、dist 瘦身、DLL 分析、最小安装包、最快启动、商业级打包风格

repo: affaan-m/ECC

Popularity

GitHub stars
280k
Ranking position
#196
License
MIT
Updated
10/15/2026

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