i2y/castella/castella-packaging

Claude Code and agent skill by i2y/castella

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Package Castella applications for distribution using ux, PyInstaller, or Nuitka. Create executables, macOS app bundles, and cross-compile for other platforms.

Install

npx vskill@latest install i2y/castella/castella-packaging

SKILL.md

Castella App Packaging

When to use: "package Castella app", "create executable", "bundle for distribution", "macOS app bundle", "code signing", "cross-compile"

ux (Recommended)

ux creates single executables using uv. End users don't need Python installed.

Installation
bash
uv tool install ux-py
Basic Usage
bash
ux bundle --project . --output ./dist/
Configuration (pyproject.toml)
toml
[tool.ux]
entry = "your_app"
include = ["assets/"]
 
[tool.ux.macos]
icon = "assets/icon.png"
bundle_identifier = "com.example.yourapp"
bundle_name = "Your App"
macOS App Bundle
bash
# Signed .app bundle
ux bundle --format app --codesign --output ./dist/
 
# With DMG
ux bundle --format app --codesign --dmg --output ./dist/
 
# With notarization
ux bundle --format app --codesign --notarize --dmg --output ./dist/
Cross-Compilation
bash
ux bundle --target linux-x86_64 --output ./dist/
ux bundle --target windows-x86_64 --output ./dist/
Supported Targets
TargetPyPI
darwin-x86_64Yes
darwin-aarch64Yes
linux-x86_64Yes
linux-aarch64GitHub
windows-x86_64Yes

PyInstaller

Alternative bundler:

bash
uv add --dev pyinstaller
uv run pyinstaller --onefile --windowed your_app.py

Nuitka

Compiles Python to native code:

bash
uv add --dev nuitka
uv run nuitka --standalone --onefile --disable-console your_app.py

Reference

  • docs/packaging.md - Full packaging documentation

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