rbenv vs rvm vs asdf vs mise vs chruby vs direnv

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A comparison of Ruby version managers covering RVM, rbenv, chruby, asdf, mise, and direnv. RVM is dismissed as outdated since Bundler handles gem isolation. rbenv is recommended for Ruby-only workflows using shims and .ruby-version files. chruby is praised for minimalism but requires manual version switching. asdf supports multiple languages via plugins but is slow due to its Bash implementation. mise, written in Rust, is recommended as the best current choice: fast, multi-language, and backwards compatible with existing config files. direnv is clarified as an environment variable manager, not a version manager, and largely redundant when using mise.

Stop Using RVM: The Ultimate Guide to Ruby Version Managers