pin homebrew readline to version 7.0.5, permanantly

brew-pin-readline.sh

#!/usr/bin/env bash

# Uninstall this incompatible version
brew uninstall --ignore-dependencies readline

# Go to the local clone of homebrew-core
pushd "$(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core"

# Move to the homebrew-core revision that had 7.0.5, last version before 8
# see: https://raw.githubusercontent.com/Homebrew/homebrew-core/b1bd1c4a62e1336422de3614d1fc49ffbce589a8/Formula/readline.rb
git checkout b1bd1c4a62e1336422de3614d1fc49ffbce589a8

# Re-install readline
brew reinstall readline

# Switch back to HEAD
git checkout master

# Pin readline so this can't happen again
brew pin readline

popd
# just for reference, another fix:
# optionally, kill it with fire.
# ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib