rb-inotify is a simple wrapper over the inotify Linux kernel subsystem for monitoring changes to files and directories.

Prawn is a pure Ruby PDF generation library.

Ruby-Locale is the pure ruby library which provides basic APIs for localization.

ruby_engine provides an RubyEngine class that can be used to check which implementation of Ruby is in use. It can provide the interpreter name and provides query methods such as RubyEngine.mri?.

AnyStyle is a very fast and smart parser for academic reference lists and bibliographies. AnyStyle uses powerful machine learning heuristics based on Conditional Random Fields and aims to make it easy to train the model with data that is relevant to your parsing needs.

This package provides the Ruby module AnyStyle. AnyStyle can also be used via the anystyle command-line utility or a web application, though the later has not yet been packaged for Guix.

This package provides a collection of RuboCop cops to check for performance optimizations in Ruby code.

This Ruby library provides an abstract interface for network clients.

This library provides Ruby qFFI bindings to the libsass library. This enables rendering SASS from Ruby code.

MSpec is a specialized framework that is syntax-compatible with RSpec 2 for basic features. MSpec contains additional features that assist in writing specs for Ruby implementations in ruby/spec.

Ruby/Git is a Ruby library that can be used to create, read and manipulate Git repositories by wrapping system calls to the git binary.

Spinach is a high-level BDD framework that leverages the expressive Gherkin language to help you define executable specifications of your code.

rainbow provides a string presenter object to colorize strings by wrapping them in ANSI escape codes.

CukeModeler facilitates modeling a test suite that is written in Gherkin (e.g. Cucumber, SpecFlow, Lettuce, etc.). It does this by providing an abstraction layer on top of the Abstract Syntax Tree (AST) that the cucumber-gherkin generates when parsing features, as well as providing models for feature files and directories in order to be able to have a fully traversable model tree of a test suite's structure. These models can then be analyzed or manipulated more easily than the underlying AST layer.

This RSpec plugin can be used to stub environment variables in a scoped context for testing.

This package provides a pure Ruby library for event-driven IO.

Reline is a pure Ruby alternative GNU Readline or Editline implementation.

This package provides a small C extension to speed up variable length integers (varint) in Ruby Protocol Buffers.

domain_name is a Domain name manipulation library. It parses a domain name ready for extracting the registered domain and TLD (Top Level Domain). It can also be used for cookie domain validation based on the Public Suffix List.

This gem provides beautiful console logging for Ruby applications. It implements fast, buffered log output and has the following features:

• Thread safe global logger with per-fiber context

• Carry along context with nested loggers

• Enable/disable log levels per class

• Detailed logging of exceptions

• Beautiful logging to the terminal or structured logging using JSON.

skiptrace provides a way to access the bindings that relate to exceptions in Ruby, providing more information about the context in which the exception occurred.

This library provides TZInfo::Data, which contains data from the IANA Time Zone database packaged as Ruby modules for use with TZInfo.

Kramdown is a library for parsing and converting a superset of Markdown. It is completely written in Ruby, supports standard Markdown (with some minor modifications) and various extensions that have been made popular by the PHP Markdown Extra package and Maruku.

Minima is a one-size-fits-all Jekyll theme for writers. It's Jekyll's default (and first) theme. It's what you get when you run jekyll new.

Daemons provides a way to wrap existing Ruby scripts to be run as a daemon and to be controlled by simple start/stop/restart commands.