Homebrew tap for ruby-build

Installing Ruby 2.4 – 3.0

brew install rbenv/tap/[email protected]
rbenv install 3.0.7 -- --with-openssl-dir="$(brew --prefix [email protected])"

Note

Installing Ruby 3.0 on macOS 14+ is likely to fail with the error message:
bigdecimal.c: error: 'maybe_unused' attribute cannot be applied to types.
If that happens, this upstream patch might help:

curl -fsSL https://github.com/ruby/ruby/commit/1dfe75b0beb7171b8154ff0856d5149be0207724.patch | \
  rbenv install 3.0.7 --patch -- --with-openssl-dir="$(brew --prefix [email protected])"

Installing Ruby 2.3 or older on macOS

brew install rbenv/tap/[email protected]
rbenv install 2.3.8 -- --with-openssl-dir="$(brew --prefix [email protected])"