Knowledge of GHC's installation directories.

This library provides wrappers around Prelude and Data.List functions, such as head and !!, that can throw exceptions.

This package provides a parser for plain-text representations of tables. This package supports table headers, cells spanning multiple columns or rows, as well as a way to specify column alignments.

This Haskell library provides a simple purely functional circular list, or ring, data type: a circular data structure such that if you continue rotating the ring in either direction, you'll eventually return to the element you first observed.

This library provides law-abiding lenses for Aeson, using microlens.

Cross platform library for file creation, modification, and deletion notification. This library builds upon existing libraries for platform specific Windows, Mac, and Linux file system event notification.

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.

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.

Long lived application data typically should not contain any thunks. This library can be used to examine values for unexpected thunks, which can then be used in assertions. This can be invaluable in avoiding memory leaks, or tracking down existing ones.

This module defines the Pandoc data structure, which is used by pandoc to represent structured documents. It also provides functions for building up, manipulating and serialising Pandoc structures.

Haskell library for parsing of ISO 8601 dates, originally from aeson.

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.

This library provides bindings for the Dot language used by the Graphviz suite of programs for visualising graphs, as well as functions to call those programs. Main features of the graphviz library include:

1. Almost complete coverage of all Graphviz attributes and syntax

2. Support for specifying clusters

3. The ability to use a custom node type

4. Functions for running a Graphviz layout tool with all specified output types

5. Generate and parse Dot code with two options: strict and liberal

6. Functions to convert FGL graphs and other graph-like data structures

7. Round-trip support for passing an FGL graph through Graphviz to augment node and edge labels with positional information, etc.

This package provides a newtype wrapper with FromJSON/ToJSON instances customisable via a phantom type parameter. The instances can be rendered to the original type using DerivingVia.

More complex tests for chell.

This library provides a YAML 1.2 parser implementation for Haskell. Its features include:

• Pure Haskell implementation with small dependency footprint and emphasis on strict compliance with the YAML 1.2 specification.

• Direct decoding to native Haskell types via (aeson-inspired) typeclass-based API (see Data.YAML).

• Support for constructing custom YAML node graph representation (including support for cyclic YAML data structures).

• Support for the standard (untyped) Failsafe, (strict) JSON, and (flexible) Core ``schemas'' providing implicit typing rules as defined in the YAML 1.2 specification (including support for user-defined custom schemas).

• Event-based API resembling LibYAML's Event-based API (see Data.YAML.Event).

• Low-level API access to lexical token-based scanner (see Data.YAML.Token).

Regex-tdfa is a pure Haskell regular expression library implementing POSIX extended regular expressions. It is a "tagged" DFA regex engine. It is inspired by libtre.

This package provides several functions to quickly search for substrings in strict or lazy ByteStrings. It also provides functions for breaking or splitting on substrings and replacing all occurrences of a substring (the first in case of overlaps) with another.

The texmath library provides functions to read and write TeX math, presentation MathML, and OMML (Office Math Markup Language, used in Microsoft Office). Support is also included for converting math formats to pandoc's native format (allowing conversion, via pandoc, to a variety of different markup formats). The TeX reader supports basic LaTeX and AMS extensions, and it can parse and apply LaTeX macros.

This package provides a fully compliant Haskell 98 lexer.

This package includes Hakell modules providing various helper functions for Lists, Maybes, Tuples, Functions.

This package provides a simple (but internally ugly) memoization function.

This tiny package contains the class ObjectName, which corresponds to the general notion of explicitly handled identifiers for API objects, e.g. a texture object name in OpenGL or a buffer object name in OpenAL.

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