<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hi,<div>I need a quick ruby primer, please.</div><div><br></div><div>I'd like to install this,</div><div><a href="https://github.com/pedrozath/coltrane">https://github.com/pedrozath/coltrane</a></div><div><br></div><div><blockquote type="cite">sudo gem install coltrane</blockquote></div><div><br></div><div>won't work because I'm on Mojave with an an ancient ruby and this requires ruby 2.7 or above.</div><div><br></div><div><blockquote type="cite">sudo port -vsN install ruby</blockquote></div><div><br></div><div>installs ruby18 by default</div><div><br></div><div></div><blockquote type="cite"><div>sudo port -vsN install ruby27</div><div>sudo port select --set ruby ruby27</div></blockquote><div><br></div><div>installs, but gem still complains.</div><div><br></div><div>just guessing at this point:</div><div><blockquote type="cite">port -vsN install rb-rubygems</blockquote></div><div><br></div><div>reinstalls ruby18 ><</div><div><br></div><div><br></div><div>Help, please.</div></body></html>