Agent-Skills.md

Agent Skills: Castella App Packaging

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

UncategorizedID: i2y/castella/castella-packaging

Repository

i2y/castella
i2yLicense: MIT
361

Install this agent skill to your local

pnpm dlx add-skill https://github.com/i2y/castella/tree/HEAD/skills/castella-packaging

Skill Files

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skills/castella-packaging/SKILL.md

Skill Metadata

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

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

uv tool install ux-py

Basic Usage

ux bundle --project . --output ./dist/

Configuration (pyproject.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

# 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

ux bundle --target linux-x86_64 --output ./dist/
ux bundle --target windows-x86_64 --output ./dist/

Supported Targets

| Target | PyPI | |--------|------| | darwin-x86_64 | Yes | | darwin-aarch64 | Yes | | linux-x86_64 | Yes | | linux-aarch64 | GitHub | | windows-x86_64 | Yes |

PyInstaller

Alternative bundler:

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

Nuitka

Compiles Python to native code:

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

Reference

  • docs/packaging.md - Full packaging documentation