CBOR is a library for the CBOR format, based on Sadayuki Furuhashi's MessagePack library.

Forwardable Extended provides more Forwardable methods for your source as Forwardable::Extended.

Nokogiri::Diff adds the ability to calculate the differences (added or removed nodes) between two XML/HTML documents.

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 anystyle command-line utility. AnyStyle can also be used as a Ruby library or as a web application, though the later has not yet been packaged for Guix.

pkg-config can be used in your extconf.rb to properly detect need libraries for compiling Ruby native extensions.

This RSpec plugin makes it easy to mark test cases as pending or skipped for a specific Ruby engine (e.g. MRI or JRuby) or version combinations.

Nori is a simple XML parsing ripped from Crack which in-turn ripped from Merb. It supports pluggable parsers and ships with both REXML and Nokogiri implementations.

This package allows loading, parsing and cascading Cascading Style Sheets (CSS) rule sets in Ruby.

TZInfo is a Ruby library that provides daylight savings aware transformations between times in different time zones.

This gem extends ruby-rdf with several common RDF vocabularies.

Comprehensive and flexible logging library written in Ruby for use in Ruby programs. It features a hierarchical logging system of any number of levels, custom level names, logger inheritance, multiple output destinations per log event, execution tracing, custom formatting, thread safteyness, XML and YAML configuration, and more.

This package provides a plugin for the RuboCop code style enforcing & linting tool.

This package allows you to test FTP implementations in ruby. It is a minimal single-client FTP server that can be bound to any arbitrary port on localhost.

This package provides a SimpleCov formatter to generate a lcov-style coverage report.

This package provides a tool for writing manuals for Prawn and Prawn accessories

Redcarpet is an extensible Ruby library for Markdown processing and conversion to (X)HTML.

Rack::Cache is suitable as a drop-in component to enable HTTP caching for Rack-based applications that produce freshness (Expires, Cache-Control) and/or validation (Last-Modified, ETag) information.

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.

Byebug is a Ruby 2 debugger implemented using the Ruby 2 TracePoint C API for execution control and the Debug Inspector C API for call stack navigation. The core component provides support that front-ends can build on. It provides breakpoint handling and bindings for stack frames among other things and it comes with a command line interface.

Parallel allows you to run any code in parallel Processes (to use all CPUs) or Threads(to speedup blocking operations). It is best suited for map-reduce or e.g. parallel downloads/uploads.

This library provides a way to run code around tests in Minitest, written using either the unit test or spec style.

This package provides a simple WebSocket client for Ruby.

Minitest-bacon extends minitest with bacon-like functionality, making it easier to migrate test suites from bacon to minitest.

Ruby C bindings to the Yajl JSON stream-based parser library. The API is compatible with the JSON gem, so yajl-ruby can act as a drop in replacement.

A modified copy of yajl is used, and included in the package.