This package provides a library and an executable for working with derived Show instances. By using the library, derived Show instances can be parsed into a generic data structure. The ppsh tool uses the library to produce human-readable versions of Show instances, which can be quite handy for debugging Haskell programs. We can also render complex generic values into an interactive Html page, for easier examination.

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

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

This library provides one module layer over regex-posix to replace Text.Regex.

Package providing a Choice type of labeled booleans to mitigate the Boolean blindness problem, which refers to the problem that boolean literals on their own aren't very informative (e.g., what does True mean in a given context?).

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

This package backports the Control.Monad.Except module from mtl (if using mtl-2.2.0.1 or earlier), which reexports the ExceptT monad transformer and the MonadError class.

This package should only be used if there is a need to use the Control.Monad.Except module specifically. If you just want the mtl class instances for ExceptT, use transformers-compat instead, since mtl-compat does nothing but reexport the instances from that package.

Note that unlike how mtl-2.2 or later works, the Control.Monad.Except module defined in this package exports all of ExceptT's monad class instances. Therefore, you may have to declare import Control.Monad.Except () at the top of your file to get all of the ExceptT instances in scope.

Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It can read and write Markdown and (subsets of) other formats, such as HTML, reStructuredText, LaTeX, DocBook, and many more.

Pandoc extends standard Markdown syntax with footnotes, embedded LaTeX, definition lists, tables, and other features. A compatibility mode is provided for those who need a drop-in replacement for Markdown.pl.

Provides default instances for types from the dlist package.

This package provides orphan instances for Template Haskell datatypes. In particular, instances for Ord and Lift, as well as a few missing Show and Eq instances. These instances used to live in the haskell-src-meta package, and that's where the version number started.

This library provides a powerful but simple way to measure software performance. It provides both a framework for executing and analysing benchmarks and a set of driver functions that makes it easy to build and run benchmarks, and to analyse their results.

This Haskell package provides an API for constructing vectors. It provides the composable Builder abstraction, which has instances of the Monoid and Semigroup classes.

You would first use the Builder abstraction to specify the structure of the vector; then you can execute the builder to actually produce the vector.

IWlib is a thin Haskell binding to the iw C library. It provides information about the current wireless network connections, and adapters on supported systems.

This package provides an implementation of n-ary sums and n-ary products. The module Data.SOP is the main module of this library and contains more detailed documentation. The main use case of this package is to serve as the core of generics-sop.

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.

Find text patterns, replace the patterns, split on the patterns. Use Megaparsec monadic parsers instead of regular expressions for pattern matching.

This package contains a wrapped name module for TimeLocale.

This Haskell library provides pointed and copointed data types.

This package provides combinators for building fast hashing functions. It includes hashing functions for all basic Haskell98 types.

This Haskell library provides a place for lots of orphan instances for the ghc-vector package.

The options package lets library and application developers easily work with command-line options.

This package provides Haskell bindings for libcmark-gfm, the reference parser for GitHub Flavored Markdown, a fully specified variant of Markdown. It includes sources for libcmark-gfm and does not require prior installation of the C library.

This library provides the functions to find unique and duplicate elements in a list.

This package provides a canonical anonymous 1-tuple type missing from Haskell for attaching typeclass instances.

There is also the OneTuple package which by using a boxed data-type provides a 1-tuple type which has laziness properties which are more faithful to the ones of Haskell's native tuples; whereas the primary purpose of Only is to provide the traditionally so named type-wrapper for attaching typeclass instances.