Jupyter Labs and Ruby

Wanted to setup Jupyter for Ruby to test out some ML stuff. Here's the setup I used and some issues I ran into.

I use asdf for Ruby and also wanted to use Bundler to manage the ML gems.

Andrew Kane has a lot of helpful stuff for Ruby ML.

The Gemfile

source 'https://rubygems.org'

gem 'ffi-rzmq'
gem 'iruby', :git => 'https://github.com/sciruby/iruby.git', :branch => 'master'

Install

JupyterLab

brew install jupyterlab

# or

pip3 install jupyterlab

ZMQ

brew install automake gmp libtool wget
brew install zeromq --HEAD
brew install czmq --HEAD

ENV

export LIBZMQ_PATH=$(brew --prefix zeromq)/lib
export LIBCZMQ_PATH=$(brew --prefix czmq)/lib

Gemfile

bundle install
bundle exec iruby register --force

Run

bundled exec jupyter-lab

Jupyter

In the notebook, you can add the following to require everything in the Gemfile.

require 'rubygems'
require 'bundler/setup'
_ = Bundler.require(:default)
puts "setup"

Errors

Installing torch-rb I got the following error. Looks like enable-shared should have been enabled, but it wasn't. I just installed the lastest Ruby with that flag.

Installing rice 2.2.0 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/dustycandland/.asdf/installs/ruby/2.6.2/lib/ruby/gems/2.6.0/gems/rice-2.2.0
/Users/dustycandland/.asdf/installs/ruby/2.6.2/bin/ruby -I /Users/dustycandland/.asdf/installs/ruby/2.6.2/lib/ruby/2.6.0 -r ./siteconf20200409-5600-a0rafr.rb extconf.rb
Unfortunately Rice does not build against a staticly linked Ruby.
You'll need to rebuild Ruby with --enable-shared to use this library.

If you're on rvm:    rvm reinstall [version] -- --enable-shared
If you're on rbenv:  CONFIGURE_OPTS="--enable-shared" rbenv install [version]
If you're on Heroku: upgrade your stack to heroku-16 or later

extconf failed, exit code 1

Reinstall Ruby with the --enable-shared flag

RUBY_EXTRA_CONFIGURE_OPTIONS="--enable-shared" asdf install ruby 2.7.1