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In Mike McQuaid's presentation at RubyKaigi 2024, he explores how modern Ruby can be utilized to enhance Homebrew, a popular package manager for macOS. With 15 years of experience working on Homebrew, McQuaid outlines Homebrew's long-standing relationship with Ruby and discusses the ways in which they are evolving together.

Key Points Discussed:  
- **Homebrew and Ruby's Relationship**:  
  - Homebrew has relied on Ruby since its inception in 2009.  
  - Initially, installations were done via direct Ruby commands, but this evolved to the current curl | bash installation method.
- **Homebrew's Formula and Cask DSL**:  
  - Introduced the concept of formulas (which define how to install packages) and casks (for binaries and installer files).  
  - Demonstrated the readability of Ruby-based formula syntax and its impact on community adoption.
- **Modernizing Homebrew**:  
  - Transition from relying on Apple’s older Ruby versions to incorporating Portable Ruby, moving to newer Ruby versions like 3.1 and 3.3.
  - The introduction of Sorbet for type-checking and RuboCop for code style consistency.
- **Performance Improvements**:  
  - Highlighted recent speed enhancements, such as making the 'brew list' command faster than PIP list.  
  - Suggested further performance enhancements through Bash for certain commands to reduce execution time.
- **Security Enhancements**:  
  - Discussions around ongoing security audits and the use of GitHub Actions for attestation in binary packages.
- **Work Brew**:  
  - Briefly described the new startup effort - Work Brew, aimed at improving how Homebrew works in enterprise environments.

Conclusions & Takeaways:  
- Emphasized the importance of community contributions for Homebrew's growth.  
- Encouraged the Ruby community to help improve Homebrew, focusing on its performance, security, and overall experience.  
- Invited attendees to reach out for assistance or to get involved, highlighting the evolving nature of Homebrew to better support users and developers alike.

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