This package provides a portable and efficient R[4567]RS implementation of regular expressions, supporting both POSIX syntax with various (irregular) PCRE extensions, as well as SCSH's SRE syntax, with various aliases for commonly used patterns.

The Nanopass framework is an embedded domain-specific language for writing compilers composed of several simple passes that operate over well-defined intermediate languages. The goal of this organization is both to simplify the understanding of each pass, because it is responsible for a single task, and to simplify the addition of new passes anywhere in the compiler. Nanopass reduces the boilerplate required to create compilers, making them easier to understand and maintain.

This is the precise pre-release version of Chez Scheme from a specific Racket release. It is used to build Racket and to bootstrap the released version of Chez Scheme.

This package provides a set of MIT/GNU Scheme compatibility libraries for Chez Scheme. The main goal was to provide the functionality required to port the program Scmutils to Chez Scheme.

This package provides a superset of the popular Scheme match package by Andrew Wright, written in fully portable syntax-rules and thus preserving hygiene.

The Nanopass framework is an embedded domain-specific language for writing compilers composed of several simple passes that operate over well-defined intermediate languages. The goal of this organization is both to simplify the understanding of each pass, because it is responsible for a single task, and to simplify the addition of new passes anywhere in the compiler. Nanopass reduces the boilerplate required to create compilers, making them easier to understand and maintain.

Chez Scheme is both a programming language and a high-performance implementation of that language. The language is a superset of R6RS Scheme with numerous extensions, including native threads, non-blocking I/O, local modules, and much more. Chez Scheme compiles source expressions incrementally to machine code, providing the speed of compiled code in an interactive system. The system is intended to be as reliable and efficient as possible, with reliability taking precedence over efficiency if necessary.

The stex package extends LaTeX with a handful of commands for including Scheme code (or pretty much any other kind of code, as long as you don't plan to use the Scheme-specific transcript support) in a document. It provides the programs scheme-prep and html-prep to convert stex documents to LaTeX and HTML, respectively, plus makefile templates, style files, and other resources. The stex system is used to typeset The Scheme Programming Language and the Chez Scheme User's Guix, among other documents.

The stex package extends LaTeX with a handful of commands for including Scheme code (or pretty much any other kind of code, as long as you don't plan to use the Scheme-specific transcript support) in a document. It provides the programs scheme-prep and html-prep to convert stex documents to LaTeX and HTML, respectively, plus makefile templates, style files, and other resources. The stex system is used to typeset The Scheme Programming Language and the Chez Scheme User's Guix, among other documents.

Chez-sockets is an extensible sockets library for Chez Scheme.

This package provides a library of procedures for formatting Scheme objects to text in various ways, and for easily concatenating, composing and extending these formatters efficiently without resorting to capturing and manipulating intermediate strings.

Chez Scheme is a self-hosting compiler: building it requires ``boot files'' containing the Scheme-implemented portions compiled for the current platform. (Chez can then cross-compile bootfiles for all other supported platforms.)

This package provides boot files for the released version of Chez Scheme bootstrapped by chez-scheme-for-racket. Chez Scheme 9.5.4 or any later version can be used for bootstrapping. Guix ultimately uses the Racket package cs-bootstrap to bootstrap its initial version of Chez Scheme.

This package provides a collection of SRFI libraries for Chez Scheme.

Schemesh is an interactive shell scriptable in Lisp. It supports interactive line editing, autocompletion, history and the familiar Unix shell syntax.

This egg provides a way to do on-the-fly compilation of source code and load it into the running process.

This library implements the Wu-Manber algorithm for approximate string searching with errors, popularized by the agrep Unix command and the glimpse file indexing tool.

This CHICKEN Scheme library provides a facility for creating and using variant records, as described in the book Essentials of Programming Languages by Friedman, Wand, and Haynes.

This package provides an implementation of SRFI-69 hash tables for CHICKEN Scheme, along with SRFI-90 extensions.

Character sets can be created, extended, tested for the membership of a characters and be compared to other character sets

This ``integer set'' CHICKEN Scheme library implements bit vectors. Bit-vectors provide an abstract interface to bitwise operations typically done with integers.

This package provides the SRFI-13 string library for Chicken scheme.

The crypto-tools egg implements useful cryptographic primitives. More specifically, provided are:

• binary blobs

  • marshallers to and from hex strings

  • blob xor

  • blob padding using either PKCS#5 or ISO7816-4

• Block cipher modes of operation

  • CBC with or without incorporated encrypted IV in the ciphertext

  • CTR with or without incorporated IV in the ciphertext

CHICKEN is a compiler for the Scheme programming language. CHICKEN produces portable and efficient C, supports almost all of the R5RS Scheme language standard, and includes many enhancements and extensions.

The list library defined in SRFI-1 contains a lot of useful list processing procedures for construction, examining, destructuring and manipulating lists and pairs.