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Using Ruby with GraalVM
/reference-manual/ruby/InstallingGraalVM/

Using TruffleRuby with GraalVM

GraalVM is the platform on which TruffleRuby runs.

Installing GraalVM enables you to run TruffleRuby both in the --native and --jvm runtime configurations.

Dependencies

TruffleRuby's dependencies need to be installed for TruffleRuby to run correctly.

Community Edition and Enterprise Edition

GraalVM is available in a Community Edition, which is open-source, and an Enterprise Edition which has better performance and scalability. See the website for a comparison.

Installing the Base Image

GraalVM starts with a base image which provides the platform for high-performance language runtimes.

The Community Edition base image can be installed from GitHub, under an open source licence.

The Enterprise Edition base image can be installed from Oracle Downloads page by accepting the Oracle License Agreement.

Nightly builds of the GraalVM Community Edition are also available.

Whichever edition you choose, you will obtain a tarball which you can extract. There will be a bin directory (Contents/Home/bin on macOS) which you can add to your $PATH if you want to.

Installing with asdf

Using asdf and asdf-java installation is as easy as asdf install java graalvm-20.1.0+java11 (look up versions via asdf list-all java | grep graalvm).

Installing Ruby and Other Languages

After installing GraalVM you then need to install the Ruby language into it. This is done using the gu command. The Ruby package is the same for both editions of GraalVM and comes from GitHub:

gu install ruby

This command will show a message regarding running a post-install script. This is necessary to make the Ruby openssl C extension work with your system libssl. Please run that script now. The path of the script will be:

# Java 8
jre/languages/ruby/lib/truffle/post_install_hook.sh
# Java 11+
languages/ruby/lib/truffle/post_install_hook.sh
# Generic
$(path/to/graalvm/bin/ruby -e 'print RbConfig::CONFIG["prefix"]')/lib/truffle/post_install_hook.sh

You can also download the latest Ruby component (ruby-installable-...) manually from GitHub (CE) or from Oracle Downloads (EE). Then install it with gu install --file path/to/ruby-installable-....

Using a Ruby Manager

Inside GraalVM is a jre/languages/ruby or languages/ruby directory which has the usual structure of a Ruby implementation. It is recommended to add this directory to a Ruby manager. See configuring Ruby managers for more information.