Created: 2008-03-21 18:48
Updated: 2019-02-25 13:03
License: mit


FYI: Reia is defunct. No additional work on it is planned. If you are interested in the ideas behind Reia, I strongly suggest you check out the Elixir language, which is now in a more mature stage of development than Reia:


Welcome to Reia (pronounced RAY-uh), a Ruby-like scripting language for the Erlang virtual machine (BEAM).

Want to know more about Reia? Syntax examples and that sort of thing? Please visit the home page at:

Compiling Reia

Reia requires Erlang version R12B-3 (5.6.3) or later. The latest version of Erlang is available here:

You'll also need Ruby and Rake installed. To compile Reia, type:


After compilation is complete, you'll see the test suite run and if everything went well it should hopefully pass.


Here's some thoroughly interesting implementation trivia about Reia:

  • Leex-based scanner
  • Yecc-based grammar (a Neotoma-based branch is also available)
  • Successive parse transforms convert Reia parse trees into the Erlang abstract format, then into BEAM/HiPE bytecode


About the Author

Reia was created by Tony Arcieri, a programmer from Denver, Colorado, USA. Tony has a background in network services and distributed peer-to-peer systems. His favorite programming languages are Ruby and Erlang.

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