Ruby Gem Development

Build and publish gems with Bundler and standard layout.

When to Use This Skill

• New gem from bundle gem
• Semver releases
• CI for multi-Ruby matrix

Defaults (This Plugin)

• Toolchain: mise — not rbenv, rvm, or asdf directly
• Ruby: 4.0.0+ unless the project pins otherwise
• Rails: 8+ conventions and generators when applicable
• Execution: Prefer mise exec --, bin/rails, bin/rspec, and bundle exec

Core Guidance