R6RS.md

The implementations

• Ikarus - Fast. GPL3.

• Ypsilon - Used for professional game development.

• Chez - Best Scheme compiler in the world. Commercial.

• Larceny - Used for academic research in garbage collection.

• Mosh - Has support in MonaOS.

• PLT - Has support for R6RS among it's many dialects.

• IronScheme - .Net

• Biwa - Scheme in a web browser. Written in JavaScript.

R6RS support is being added to Guile.

There's a project to add R6RS support to Gambit-C.

Where do I put my libraries?

I keep my libraries in ~/scheme. I have this in my ~/.bashrc:

export SCHEME_LIBRARIES=~/scheme

export MOSH_LOADPATH=$SCHEME_LIBRARIES

export IKARUS_LIBRARY_PATH=$SCHEME_LIBRARIES

export YPSILON_SITELIB=$SCHEME_LIBRARIES

export MOSH_LOADPATH=$SCHEME_LIBRARIES

export LARCENY_LIBPATH=$SCHEME_LIBRARIES:~/src/larceny-gl

export CHEZSCHEMELIBDIRS=~/src/chez-gl:$SCHEME_LIBRARIES

SRFIs for Ikarus

Ikarus doesn't come with any SRFIs. Assuming you keep your source code in ~/src:

$ cd ~/src
$ mkdir r6rs-srfis
$ cd r6rs-srfis
$ bzr branch lp:~scheme-libraries-team/scheme-libraries/srfi

Then adjust your .bashrc:

export IKARUS_LIBRARY_PATH=$SCHEME_LIBRARIES:~/src/r6rs-srfis

OpenGL

Ikarus and Ypsilon come with OpenGL libraries. Libraries for Chez and Larceny are available.