homebrew-cask-authoring
Create, update, validate, and submit Homebrew Casks. Use when the user mentions Homebrew cask/cask, Homebrew/homebrew-cask, adding a new cask, updating a cask, cask token naming, sha256, url verified:, livecheck, zap/uninstall, or when asked to run brew style/audit for a cask.
Full skill instructions
Author and maintain Homebrew Casks with correct token naming, stanzas, audit/style compliance, and local install testing.
rm/tap changes before suggesting them.Collect:
.app bundle name)app, pkg, suite, etc.)If any of these are unknown, propose a short plan to discover them.
.app bundle name..app and common suffixes: “App”, “Mac”, “Desktop”, “for macOS”, version numbers.@beta, @nightly, or @<major> for variants.Confirm the token before writing the file.
Use this canonical structure:
cask "token" do
version "1.2.3"
sha256 "..."
url "https://example.com/app-#{version}.dmg"
name "Official App Name"
desc "Short one-line description"
homepage "https://example.com"
app "AppName.app"
end
Rules of thumb:
https URLs.verified: when download host domain differs from homepage domain.desc factual and concise (no marketing).If URLs and/or sha256 differ by CPU:
arch + sha256 arm: ..., intel: ... when versions match.on_arm / on_intel blocks when versions differ.uninstall for pkg installs (include pkgutil: identifiers).zap for user data cleanup (support directories, preferences, caches), but keep it accurate.Run, in this order:
brew style --fix <token>
brew audit --cask --online <token>
For new casks also run:
brew audit --cask --new <token>
HOMEBREW_NO_INSTALL_FROM_API=1 brew install --cask <token>
brew uninstall --cask <token>
If install fails:
sha256, and artifact name.brew install --cask --verbose <token>.Before suggesting submission:
brew style and all relevant brew audit commands pass.If the user is editing Homebrew/homebrew-cask locally and wants Homebrew to execute their working copy, use a tap symlink workflow.
Read the full end-to-end checklist here:
references/homebrew-cask-contribution-workflow.md
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