Homebrew, rbenv, ruby-build, openssl…
How to upgrade OpenSSL on Mac OS. Homebrew issues led me down a lovely garden path… and this guide helped.
Explicitly specifying the OpenSSL can work when installing a new version of Ruby with rbenv.
RUBY_CONFIGURE_OPTS=--with-openssl-dir=/usr/local/Cellar/openssl/1.0.2k rbenv install 2.3.1
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