ruby

[chilli.namesake at gmail.com]

Hi,
I need a quick ruby primer, please.

I'd like to install this,
https://github.com/pedrozath/coltrane

> sudo gem install coltrane


won't work because I'm on Mojave with an an ancient ruby and this requires ruby 2.7 or above.

> sudo port -vsN install ruby


installs ruby18 by default

> sudo port -vsN install ruby27
> sudo port select --set ruby ruby27

installs, but gem still complains.

just guessing at this point:
> port -vsN install rb-rubygems


reinstalls ruby18 ><


Help, please.
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