This library provides a class for non-negative numbers, a wrapper which can turn any ordered numeric type into a member of that class, and a lazy number type for non-negative numbers (a generalization of Peano numbers).

This package profides a class for encoding and decoding UTF8 strings with instances for several common types. It also includes several functions for working with UTF8. It aims to be lightweight, depending only on Base and including only one module.

This package provides various extra monoid-related definitions and utilities, such as monoid actions, monoid coproducts, semi-direct products, "deletable" monoids, "split" monoids, and "cut" monoids.

This package provides a GHC.Generics-based Control.DeepSeq.Generics.genericRnf function which can be used for providing an rnf implementation.

Haskeline provides a user interface for line input in command-line programs. This library is similar in purpose to readline, but since it is written in Haskell it is (hopefully) more easily used in other Haskell programs.

Haskeline runs both on POSIX-compatible systems and on Windows.

HAProxy protocol version 1.5 support (see http://haproxy.1wt.eu/download/1.5/doc/proxy-protocol.txt) for applications using io-streams. The proxy protocol allows information about a networked peer (like remote address and port) to be propagated through a forwarding proxy that is configured to speak this protocol.

This package provides access to ALSA infrastructure, that is needed by both alsa-seq and alsa-pcm.

This module provides set and multiset operations on ordered lists.

A Haskell wrapper around the Isocline C library which can provide an alternative to GNU Readline. The Isocline library is included whole and there are no runtime dependencies.

Manipulate identifiers and structurally non-complex pieces of text by delimiting word boundaries via a combination of whitespace, control-characters, and case-sensitivity.

Has support for common idioms like casing of programmatic variable names, taking, dropping, and splitting by word, and modifying the first character of a piece of text.

Caution: this library makes heavy use of the text library's internal loop optimisation framework. Since internal modules are not guaranteed to have a stable API there is potential for build breakage when the text dependency is upgraded. Consider yourself warned!

This library provides free monads, which are useful for many tree-like structures and domain specific languages. If f is a Functor then the free Monad on f is the type of trees whose nodes are labeled with the constructors of f. The word "free" is used in the sense of "unrestricted" rather than "zero-cost": Free f makes no constraining assumptions beyond those given by f and the definition of Monad.

Bindings to the Xft, X Free Type interface library, and some Xrender parts.

This is a binding to libpq: the C application programmer's interface to PostgreSQL. libpq is a set of library functions that allow client programs to pass queries to the PostgreSQL backend server and to receive the results of these queries.

This library provides the Data.Primitive.Addr module that was a part of the primitive library before primitive-0.7.0.0.

The doctest program checks examples in source code comments. It is modeled after doctest for Python, see the Doctest website.

This library provides opaque unique identifiers in primitive state monads and a GADT-like type using them as witnesses of type equality.

This package provides semigroups for Haskell. In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation. A semigroup generalizes a monoid in that there might not exist an identity element. It also (originally) generalized a group (a monoid with all inverses) to a type where every element did not have to have an inverse, thus the name semigroup.

This package contains the generics system described in the /Scrap Your Boilerplate/ papers (see the website). It defines the Data class of types permitting folding and unfolding of constructor applications, instances of this class for primitive types, and a variety of traversals.

The \'ANSI\ standards refer to the visual style of displaying characters as their \'graphic rendition\'. The \'ANSI\ codes to establish the graphic rendition for subsequent text are referred to as SELECT GRAPHIC RENDITION (SGR). This package exposes modules that export types and functions used to represent SGR aspects.

This library provides support for parsing and generating BitTorrent files.

This package defines Counter type that can be safely modified concurrently from multiple threads. The type supports only few operations, namely read, write, cas (compare and swap), add, subtract and a few bitwise ones like or, and xor. Most common use case is having a shared counter that multiple threads increment. Another potential use case is lightweight locks.

Strict Text and ByteString builder, which hides mutable buffer behind linear types and takes amortized linear time.

This package defines an Active abstraction for time-varying values with finite start and end times. It is used for describing animations within the diagrams framework.

Fixpoint types and recursion schemes. If you define your AST as fixpoint type, you get fold and unfold operations for free.

Thanks for contribution to: Matej Kollar, Herbert Valerio Riedel