QVGE is a multiplatform graph editor written in C++/Qt. Its main goal is to make possible visually edit two-dimensional graphs in a simple and intuitive way.

Context Free is a program that generates images from written instructions called a grammar. The program follows the instructions in a few seconds to create images that can contain millions of shapes.

This is a Haskell module for PortMidi audio library, which supports real-time MIDI input and output.

A flexible Haskell implementation of minimum, maximum, minimum-priority, maximum-priority and custom-ordered heaps.

Euterpea is a domain-specific language embedded in Haskell for computer music research, education, and development, providing both note-level and signal-level abstractions. It is a descendant of Haskore and HasSound, and is intended for both educational purposes as well as serious computer music applications. Euterpea is a wide-spectrum DSL, suitable for high-level music representation, algorithmic composition, and analysis; mid-level concepts such as MIDI; and low-level audio processing, sound synthesis, and instrument design.

This is the core library of the Gtk2Hs suite of libraries for Haskell based on Gtk+. Gtk+ is an extensive and mature multi-platform toolkit for creating graphical user interfaces.

Lazy SmallCheck is a library for exhaustive, demand-driven testing of Haskell programs. It is based on the idea that if a property holds for a partially-defined input then it must also hold for all fully-defined refinements of the that input. Compared to eager input generation as in SmallCheck,Lazy SmallCheck may require significantly fewer test-cases to verify a property for all inputs up to a given depth.

This package implements functions, analogous to those from Data.List, to create and manipulate infinite lists: data Stream a = Cons a (Stream a). It provides alternative definitions for those Prelude functions that make sense for such streams. Note that this package has (almost) nothing to do with the work on Stream Fusion by Duncan Coutts, Roman Leshchinskiy, and Don Stewart.

ThreadScope is a graphical viewer for thread profile information generated by the Glasgow Haskell compiler (GHC).

The Threadscope program allows us to debug the parallel performance of Haskell programs. Using Threadscope we can check to see that work is well balanced across the available processors and spot performance issues relating to garbage collection or poor load balancing.

Parses .eventlog files emitted by GHC 8.0.2 and later. Includes the ghc-events tool permitting, in particular, to dump an event log file as text.

Alga is a library for algebraic construction and manipulation of graphs in Haskell.

Several classes that extend the Arrow class, and some transformers that implement or lift these classes.

Generic implementations of standard type classes. Operations on generic representations to help using "GHC.Generics". See README.

This package provides an interface to Windows and Unix file locking functionalities.

Write short and concise generic instances of type classes. one-liner is particularly useful for writing default implementations of type class methods.

Tasty is a modern testing framework for Haskell. It lets you combine your unit tests, golden tests, QuickCheck/SmallCheck properties, and any other types of tests into a single test suite.

Please see README.md.

Generating shrinkable, showable functions with `hedgehog`. See `Hedgehog.Function` for example usages.

This package provides a Haskell library for working with files and directories. Includes code for pattern matching, finding files, modifying file contents, and more.

Efficient and optimized non-empty versions of types from /containers/. Inspired by /non-empty-containers/ library, except attempting a more faithful port (with under-the-hood optimizations) of the full /containers/ API. Also contains a convenient typeclass abstraction for converting betwewen non-empty and possibly-empty variants. See README.md for more information.

This package provides efficient vector-based hashtable implementation similar to .NET Generic Dictionary implementation (at the time of 2015). . See "Data.Vector.Hashtables" for documentation.

HUnit support for the Tasty test framework. . Note that this package does not depend on HUnit but implements the relevant subset of its API. The name is a legacy of the early versions of tasty-hunit and of test-framework-hunit, which did depend on HUnit.

This package provides a fancy test runner and support for «golden testing». . A golden test is an IO action that writes its result to a file. To pass the test, this output file should be identical to the corresponding «golden» file, which contains the correct result for the test. . The test runner allows filtering tests using regexes, and to interactively inspect the result of golden tests. . This package is a heavily extended fork of tasty-golden.

This package provides portable implementations of parts of the unix package. This package re-exports the unix package when available. When it isn't available, portable implementations are used.