fix-homebrew-openssl.sh

#!/bin/bash
#
# Homebrew has removed openssl 1.0 from the core repo, making the default
# openssl 1.1. We still have a number of packages that rely on openssl 1.0
# (including ruby 2.2.7), so we need to bring it back.
# Commit 0349a7ca76f483483c6d5c1d4cfe6b458dee2665 is the commit that removed 1.0
# from the repo. Commit 30fd2b68feb458656c2da2b91e577960b11c42f4 is its parent
# commit that still has 1.0.

# Uninstall 1.1 if it is currently installed as 'openssl'
if brew ls openssl 2>&1 | grep -q '/1\.1\.'; then
    install_openssl11=1
    brew uninstall --force openssl
fi

cd $(brew --repo Homebrew/homebrew-core)
git fetch --unshallow
git checkout 30fd2b68feb458656c2da2b91e577960b11c42f4
HOMEBREW_NO_AUTO_UPDATE=1 brew install openssl

# Reinstall openssl@1.1 if necessary
if [ "$install_openssl11" ]; then
    brew install openssl@1.1
fi