This package provides a dependent sum is a generalization of a particular way of thinking about the Either type. Either a b can be thought of as a 2-tuple (tag, value), where the value of the tag determines the type of the value. In particular, either tag = Left and value :: a or tag = Right and value :: b. This package allows you to define your own dependent sum types by using your own "tag" types.

This package provides the bytestring builder that is debuting in bytestring-0.10.4.0, which should be shipping with GHC 7.8. Compatibility package for older packages.

This library provides Haskell bindings for the OpenGL Utility Toolkit, a window system-independent toolkit for writing OpenGL programs.

This library lets you derive automatically Haskell functions that let you query each endpoint of a <http://hackage.haskell.org/package/servant servant> webservice. . See <http://docs.servant.dev/en/stable/tutorial/Client.html the client section of the tutorial>. . <https://github.com/haskell-servant/servant/blob/master/servant-client/CHANGELOG.md CHANGELOG>.

This library provides a type for specifying Optional function arguments.

This is a modified version of wl-pprint, which was based on Wadler's paper "A Prettier Printer". This version allows the library user to annotate the text with semantic information, which can later be rendered in a variety of ways.

This package allows you to work with WAVE and RF64 files in Haskell.

This Haskell package provides a lens library, just like ghc-lens, but smaller. It provides essential lenses and traversals (like _1 and _Just), as well as ones which are simply nice to have (like each, at, and ix), and some combinators (like failing and singular), but everything else is stripped. As the result, this package has no dependencies.

This package provides utilities and combinators for parsing command line options in Haskell.

Haddock is a documentation-generation tool for Haskell libraries.

This Haskell library generates pretty hex dumps of ByteStrings in the style of other common *nix hex dump tools.

This package provides both mutable and immutable Bloom filter data types, along with a family of hash functions and an easy-to-use interface.

The threadDelay and timeout functions from the Haskell base library use the bounded Int type for specifying the delay or timeout period. This package provides alternative functions which use the unbounded Integer type.

LeanCheck is a simple enumerative property-based testing library. Properties are defined as Haskell functions returning a boolean value which should be true for all possible choices of argument values. LeanCheck applies enumerated argument values to these properties in search for a counterexample. Properties can be viewed as parameterized unit tests. LeanCheck works by producing tiers of test values: a possibly infinite list of finite sublists of same-and-increasingly-sized values.

This library provides monad morphism utilities, most commonly used for manipulating monad transformer stacks.

This package provides portable implementations of parts of the unix package. This package re-exports the unix package when available. When it isn't available, portable implementations are used.

This library provides phantom types for Haskell 98, to avoid having to unsafely pass dummy arguments.

This package allows you to use Template Haskell to read a file or all the files in a directory, and turn them into (path, bytestring) pairs embedded in your Haskell code.

This Hackage security library provides both server and client utilities for securing the Hackage package server. It is based on The Update Framework, a set of recommendations developed by security researchers at various universities in the US as well as developers on the Tor project.

Chell is a simple and intuitive library for automated testing. It natively supports assertion-based testing, and can use companion libraries such as chell-quickcheck to support more complex testing strategies.

This package provides a quasi-quoter for raw SQL for ghc-persistent.

This library is intended to be a comprehensive solution to parsing and selecting quality-indexed values in HTTP headers. It is capable of parsing both media types and language parameters from the Accept and Content header families, and can be extended to match against other accept headers as well. Selecting the appropriate header value is achieved by comparing a list of server options against the quality-indexed values supplied by the client. . In the following example, the Accept header is parsed and then matched against a list of server options to serve the appropriate media using mapAcceptMedia': . > getHeader >>= maybe send406Error sendResourceWith . mapAcceptMedia > [ ("text/html", asHtml) > , ("application/json", asJson) > ] . Similarly, the Content-Type header can be used to produce a parser for request bodies based on the given content type with mapContentMedia': . > getContentType >>= maybe send415Error readRequestBodyWith . mapContentMedia > [ ("application/json", parseJson) > , ("text/plain", parseText) > ] . The API is agnostic to your choice of server.

The ghc-lib-parser-ex package contains GHC API parse tree utilities.

This package provides ordered containers of intervals, with efficient search for all keys containing a point or overlapping an interval. See the example code on the home page for a quick introduction.