How to install ruby and gitsh on macOS with macports.sh

sudo port selfupdate
sudo port install ruby32 # will include readline
sudo port select --set ruby ruby32

### >>> OPEN A NEW TERMINAL!!! <<<
### otherwise, the configuration won't point to the correct version of readline, no matter what you do.
### not sure if this is "through" the ruby binary, or something else in the environment
### i just saved you 17 hours of your life, you're welcome

curl -OL https://github.com/thoughtbot/gitsh/releases/download/v0.14/gitsh-0.14.tar.gz
tar -zxvf gitsh-0.14.tar.gz
cd gitsh-0.14

# >>>> make these modifications: https://github.com/thoughtbot/gitsh/pull/389/files

RUBY=/opt/local/bin/ruby ./configure
make
sudo make install


# if using rbenv you can use this build command:
RUBY=$(which ruby) ./configure
# but then you need to manually change the top line in /usr/local/share/gitsh/ruby/gitsh.rb
# to point directly to the binary
# see discussion here: https://github.com/thoughtbot/gitsh/issues/229

see discussion here thoughtbot/gitsh#281

thoughtbot/gitsh#389