husk-scheme (hackage):   Husk is a dialect of Scheme written in Haskell that implements a superset of the R5RS standard. Advanced features are provided including:  First-class continuations of unlimited extent  Hygienic macros based on syntax-rules  Low-level explicit renaming macros  Library syntax from the R7RS standard  A foreign function interface (FFI) to Haskell  Full numeric tower providing support for real, rational, and complex numbers  Proper tail recursion and lexical scoping  Read-Eval-Print-Loop (REPL) interpreter, with input driven by Haskeline to provide a rich user experience  Standard library of Scheme functions, and support for many popular SRFI's  Husk may be used as either a stand-alone interpreter or as an extension language within a larger Haskell application. By closely following the R5RS standard, the intent is to develop a Scheme that is as compatible as possible with other R5RS Schemes. Husk is mature enough for use in production, however it is not optimized for performance-critical applications.  Scheme is one of two main dialects of Lisp. Scheme follows a minimalist design philosophy: the core language consists of a small number of fundamental forms which may be used to implement other built-in forms. Scheme is an excellent language for writing small, elegant programs, and may also be used to write scripts or embed scripting functionality within a larger application.  For documentation and examples, see http://justinethier.github.io/husk-scheme/documentation.html.  For detailed information on each release, see http://justinethier.github.io/husk-scheme/news.html.    [Index] [Quick Jump]  Include debug trace statements in compiled code.  Haskell Foreign Function Interface (FFI). Allows husk to import and call into Haskell code directly from Scheme code. Turn off FFI to decrease build times and minimize executable sizes  R7RS-style libraries.  Turn off pointers to increase performance at the expense of severely restricting the functionality of mutable variables. Setting this flag to false will revert back to the behavior from older versions of husk.  Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info  Package maintainers  For package maintainers and hackage trustees  Candidates      Husk is a dialect of Scheme written in Haskell that implements a superset of the R5RS standard and a large portion of the R7RS-small language. Advanced features are provided including continuations, hygienic macros, libraries, and a full numeric tower.  Husk may be used as either a stand-alone interpreter or as an extension language within a larger Haskell application. By closely following the R5RS standard, the intent is to develop a Scheme that is as compatible as possible with other R5RS Schemes. Husk is mature enough for use in production applications, however it is not optimized for performance-critical applications.  Scheme is one of two main dialects of Lisp. Scheme follows a minimalist design philosophy: the core language consists of a small number of fundamental forms which may be used to implement other built-in forms. Scheme is an excellent language for writing small, elegant programs, and may also be used to write scripts or embed scripting functionality within a larger application.  More information is available on the husk website.  Prerequisites: You will need the Haskell Platform if you don't already have a recent copy installed.  Install Husk using cabal:  Adjust your PATH: Before running Husk you may also need to add the cabal executable directory to your path. On Linux this is ~/.cabal/bin.  Now you are ready to start up the interpreter:  Husk has been tested on Windows, Linux, and FreeBSD.  The online user manual provides an overview of the Scheme language as implemented by Husk, including:  Directory Structure  Copyright (C) 2010 Justin Ethier  Husk scheme is available under the MIT license.  The interpreter is based on code from the book Write Yourself a Scheme in 48 Hours written by Jonathan Tang and hosted / maintained by Wikibooks.
Keywords: compilers-interpreters|language|library|mit|program|haskell|scheme