This library provides higher order versions of Prelude classes to ease programming with polymorphic recursion and reduce UndecidableInstances.

This Haskell package uses a monad transformer approach for logging.

This package provides Template Haskell functions for determining source code locations of messages.

A parser and renderer for binary Olson timezone files whose format is specified by the tzfile(5) man page on Unix-like systems. For more information about this format, see http://www.iana.org/time-zones/repository/tz-link.html. Functions are provided for converting the parsed data into TimeZoneSeries objects from the timezone-series package.

This is library provides utility to use Netlink from Haskell. The scope of this package extends over general Netlink support to specific implementations of Netlink families.

SmallCheck is a testing library that verifies properties for all test cases up to some depth. The test cases are generated automatically by SmallCheck.

This package provides the tldr command and a Haskell client library allowing users to update and view tldr pages from a shell. The tldr pages are a community effort to simplify the man pages with practical examples.

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.

This Haskell library provides a function for computing the difference between (expression) trees. It also provides a way to compute the difference between arbitrary abstract datatypes (ADTs) using Generics-derivable helpers.

This library provides Control.Lens. The combinators in Control.Lens provide a highly generic toolbox for composing families of getters, folds, isomorphisms, traversals, setters and lenses and their indexed variants.

This package provides Haskell bindings to the setlocale C function.

This package provides a wrapper around the Pango C library that allows high-quality rendering of Unicode text. It can be used either with Cairo to output text in PDF, PS or other documents or with Gtk+ to display text on-screen.

This package provides a basic random number generation library, including the ability to split random number generators.

This package provides a version of ghc-hspec-expectations generalized to MonadIO.

This package provides various primitive memory-related operations.

This package provides the ShortText type which is suitable for keeping many short strings in memory. This is similar to how ShortByteString relates to ByteString.

The main difference between Text and ShortText is that ShortText uses UTF-8 instead of UTF-16 internally and also doesn't support zero-copy slicing (thereby saving 2 words). Consequently, the memory footprint of a (boxed) ShortText value is 4 words (2 words when unboxed) plus the length of the UTF-8 encoded payload.

An implementation of the git-lfs protocol.

language-python is a Haskell library for lexical analysis, parsing and pretty printing Python code. It supports versions 2.x and 3.x of Python.

The documentation of System.Environment.getProgName says that "However, this is hard-to-impossible to implement on some non-Unix OSes, so instead, for maximum portability, we just return the leafname of the program as invoked." This library tries to provide the missing path.

More complex tests for chell.

vty is a terminal GUI library in the niche of ncurses, intended to be easy to use and to provide good support for common terminal types.

This package provides a Haskell library including a couple of different implementations of mutable hash tables in the ST monad, as well as a typeclass abstracting their common operations, and a set of wrappers to use the hash tables in the IO monad.

This library provides some useful tools from the C standard library.

This library provides the core data types and functions for parsing Commonmark. The parser is fully Commonmark-compliant and passes the test suite. It is designed to be customizable and easily extensible. To customize the output, create an AST, or support a new output format, one need only define some new typeclass instances. It is also easy to add new syntax elements or modify existing ones.

Accurate information about source positions is available for all block and inline elements. Thus the library can be used to create an accurate syntax highlighter or an editor with live preview. The parser has been designed for robust performance even in pathological cases that tend to cause stack overflows or exponential slowdowns in other parsers, with parsing speed that varies linearly with input length.

This package provides an implementation of MurmurHash2, a good, fast, general-purpose, non-cryptographic hashing function. See https://sites.google.com/site/murmurhash/ for details. This implementation is pure Haskell, so it might be a bit slower than a C FFI binding.