install ruby 2.0.0-p0 on ubuntu

README.md

Installs ruby-2.0.0-p0 on ubuntu via checkinstall so it's in your package manager and you can remove it.

Quick install:

curl -L https://gist.github.com/ngauthier/5039249/raw/1868bf4714052b40e2bb7fdf3f40fbeb5d730bca/ruby-2-install-ubuntu.sh | bash -s

ruby-2-install-ubuntu.sh

#!/usr/bin/env bash
set -e

sudo apt-get build-dep ruby1.9.1

wget -c http://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p0.tar.gz
tar xzf ruby-2.0.0-p0.tar.gz
cd ruby-2.0.0-p0

./configure
make

sudo checkinstall -y \
  --pkgversion 2.0.0-p0 \
  --provides "ruby-interpreter"

Check there are some uncommented entries in /etc/apt/sources.list beginning with 'deb-src' and/or run apt-get update

How can I use this new package with update-alternatives?
It's not listed there when i do update-alternatives --config ruby

Thanks :-)

Forgot to install checkinstall. Used quick install and it installed 1.8.7. Purging it.

Try this:
sudo add-apt-repository ppa:brightbox/ruby-ng-experimental
sudo apt-get update
sudo apt-get install -y ruby2.0 ruby2.0-dev ruby2.0-doc

Now you can do update-alternatives --config ruby

Thanks @pije76 :) :)