rabbit-slide-kou-rubykaigi-2025 2025.4.16.0

I talked about ((<"Goodbye fat gem"|URL:https://rubykaigi.org/2020/presentations/ktou.html>)) at RubyKaigi Takeout 2020. Fat gem is a gem that includes pre-built binaries. Extension libraries can assume that users have build environment with Ruby 2.4 or later. So gems don't need to bundle pre-built binaries for easy to install. Users can build binaries by themselves. As of 2025, we're still using fat gem... I discussed how to improve this situation with ruby-installer author, Nokogiri maintainer and RubyGems community in 2022: * https://gist.github.com/postmodern/4c0cbccc0c7eda4585db0fc5267cdd57 * https://github.com/rubygems/rubygems/issues/1296 I propose a solution based on these discussions.