This library provides an efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework.

Parsing of aeson's Value with attoparsec, originally from aeson.

This package provides extensible exceptions for both new and old versions of GHC (i.e., < 6.10).

A prettyprinter/text rendering engine. Easy to use, well-documented, ANSI terminal backend exists, HTML backend is trivial to implement, no name clashes, Text-based, extensible.

This package provides two simple conduit wrappers around STM channels: a source and a sink.

Trifecta is a modern parser combinator library for Haskell, with slicing and Clang-style colored diagnostics.

This Haskell package provides additional data structures, and other added capabilities layered on top of the Par monad.

This package provides bindings 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 is an implementation of Tarjan's Union-Find algorithm (Robert E.: Tarjan. "Efficiency of a Good But Not Linear Set Union Algorithm",JACM 22(2), 1975) in order to maintain an equivalence relation. This implementation is a port of the union-find package using the ST monad transformer (instead of the IO monad).

The Scripting.Lua module is a wrapper of the Lua language interpreter as described in https://www.lua.org/.

ANSI terminal backend for the prettyprinter package.

This library implements mid-level Haskell bindings to the MySQL mysqlclient client library. It is aimed at speed and ease of use.

This package provides a simple interface for building .dot graph files, for input into the dot and graphviz tools. It includes a monadic interface for building graphs.

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

This package provides functions for signed 15.16 precision fixed point arithmetic.

Provides generalisations of swap :: (a,b) -> (b,a) and assoc :: ((a,b),c) -> (a,(b,c)) to Bifunctors supporting similar operations (e.g. Either, These).

The solver component used in cabal-install command-line program.

The doctest program checks examples in source code comments. It is modeled after doctest for Python (<https://docs.python.org/3/library/doctest.html>). . Documentation is at <https://github.com/martijnbastiaan/doctest-parallel#readme>.

This Haskell package defines typeclasses used for converting Haskell data types to and from HTTP API data.

This library provides functions to read, write and manipulate MIDI, WAVE and SoundFont2 multimedia files. It is written entirely in Haskell (without any FFI). It uses efficient parsing and building combinators for binary data stored in ByteStrings (based on the one in binary package).

This is a set of macros to be used when writing Haskell FFI. They were designed to be able to fully describe C interfaces, so that hsc2hs can extract from them all Haskell code needed to mimic such interfaces. All Haskell names used are automatically derived from C names, structures are mapped to Haskell instances of Storable, and there are also macros you can use with C code to help write bindings to inline functions or macro functions.

This library tries to call minimum system calls which are the bottleneck of web servers.

This library provides parsers and printers for bencoded data. Bencode is the encoding used by the peer-to-peer file sharing system BitTorrent for storing and transmitting loosely structured data.

This package provides a binary serialization library, similar to binary, that introduces an isolate primitive for parser isolation, and labeled blocks for better error messages.