A set of tools and libraries for real-life Scheme. Multiplatform and mobile.

Visit the project web page.

1. Compile the syntax expander: go to /spheres/gambit/scsc and run ./compile
2. Copy the .gambcini file to your HOME directory. This is Gambit's initialization file.
3. (optional) Copy the spheres/ directory into your Gambit's installation library directory (i.e. /usr/local/Gambit/lib)
4. Update all .gambcini paths to where your Spheres files are located (either Gambit's library directory, if you copied the files there, or any other path where you choose to leave Spheres' files).

Spheres requires the Gambit Scheme compiler. However, some libraries in Spheres are already compatible with r7rs implementations such as Chibi.

In order to make a library available within the REPL, the extended load form is used:

(load (spheres/core base))

Spheres also brings automated compilation and multiplatform/mobile build scripts. In order to make this functionality available, you need to install Ssrun. Once you do this, you can download the project template if you want to create a project based on Spheres. Additionally, with Ssrun, you can call the compilation tasks within the REPL:

(load (spheres/core base) compile: #t)

Spheres supports syntax-rules and define-macro syntax. The implementation is an R7RS Library Syntax subset. Current support is practical:

• Macro systems supported: syntax-rules and define-macro (syntax-case is also supported, but not used).
• Procedures in each library are within their own namespace (imports/exports are handled).
• Not supported from R7RS: except, only, rename, include-ci, include-library-declarations. Syntax is always in the global namespace (imports/exports and not handled).

Please, write to the project contributors if you are interested. Any help is welcome!