C-structs lets you create correct C structs in Haskell. These can be used for FFI calls, import as well as exports. This package is part of the development efforts for the Python library Pythas. Pythas provides an interface to import Haskell modules. . Note: As of GHC 9.2 structs cannot be passed by value, only by reference.

Foundation for libraries generated by haskell-gi

This package provides a stable version of Hspec which is used to test the in-development version of Hspec.

This package lacks a description. Run "info '(guix) Synopses and Descriptions'" for more information.

This package exposes internal types and functions that can be used to extend Hspec's functionality.

Bindings for Pango, autogenerated by haskell-gi.

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.

Bindings for Graphene, autogenerated by haskell-gi.

Haskell bindings for libarchive. Provides the ability to unpack archives, including the ability to unpack archives lazily.

This package provides various primitive memory-related operations.

In many cases, it is useful (either for error checking or documentation reasons) to define input and output types as having a particular unit of time. In addition, by creating a type class defining type units, this library should make it easier to separate the units of time the developer wants to think in versus the units of time the library author wants to think in.

For upgrading to streamly-0.9.0+ please read the <https://github.com/composewell/streamly/blob/streamly-0.10.0/docs/User/Project/Upgrading-0.8-to-0.9.md Streamly-0.9.0 upgrade guide>. . Streamly is a standard library for Haskell that focuses on C-like performance, modular combinators, and streaming data flow model. Streamly consists of two packages: "streamly-core" and "streamly". <https://hackage.haskell.org/package/streamly-core streamly-core> provides basic features, and depends only on GHC boot libraries (see note below), while <https://hackage.haskell.org/package/streamly streamly> provides higher-level features like concurrency, time, lifted exceptions, and networking. For documentation, visit the <https://streamly.composewell.com Streamly website>. . The streamly-core package provides the following functionality: . * Streams as composable producers of a sequence of values. * Streams provide all the functionality provided by Haskell lists but in an effectful, streaming fashion with better performance. * Streams provide ListT and logic programming functionality as well. * Folds as composable stream consumers that reduce the streams to a single value or reduce segments of streams to transform the stream. * Parsers as more powerful, composable stream consumers supporting standard parser combinators with backtracking but in a streaming fashion. * Arrays with streaming interfaces providing high performance, modularity, and concise interface as all streaming operations can be performed on arrays. * Arrays can be immutable or mutable, unboxed or boxed, pinned or unpinned. * Arrays generalize the functionality provided by @bytestring@ and @text@ packages. * Interoperability with @bytestring@ and @text@ is provided via separate packages. * Arrays and folds provide natural builder functionality so there are no separate builder modules. * High performance binary serialization with configurable JSON like features. * Streaming combinators for unicode text processing, providing functionality equivalent to the @text@ package. * String interpolation for convenient construction of strings. * Streaming console IO (stdin/stdout) operations. * Streaming file and directory IO operations. . This package covers some or all of the functionality covered by @streaming, pipes, conduit, list-t, logic-t, foldl, attoparsec, array, primitive, vector, vector-algorithms, binary, cereal, store, bytestring, text, stringsearch, interpolate@. Streamly provides a consistent, concise, modular and performant interface for all this functionality. . Note: The dependencies "heaps" and "monad-control" are included in the package solely for backward compatibility, and will be removed in future versions.

Bindings for GtkSource, autogenerated by haskell-gi.

As of 2023, this library is largely obsolete: arbitrary test generators with shrinking such as [falsify](https://hackage.haskell.org/package/falsify) offer much better user experience. . SmallCheck is a testing library that allows to verify properties for all test cases up to some depth. The test cases are generated automatically by SmallCheck.

Bindings for Gsk, autogenerated by haskell-gi.

Bindings for GObject, autogenerated by haskell-gi.

Haskell WebKit bindings.

Bindings for JavaScriptCore 6.x, autogenerated by haskell-gi.

QuickCheck is a library for random testing of program properties. The programmer provides a specification of the program, in the form of properties which functions should satisfy, and QuickCheck then tests that the properties hold in a large number of randomly generated cases. Specifications are expressed in Haskell, using combinators provided by QuickCheck. QuickCheck provides combinators to define properties, observe the distribution of test data, and define test data generators. . Most of QuickCheck's functionality is exported by the main "Test.QuickCheck" module. The main exception is the monadic property testing library in "Test.QuickCheck.Monadic". . If you are new to QuickCheck, you can try looking at the following resources: . * The <http://www.cse.chalmers.se/~rjmh/QuickCheck/manual.html official QuickCheck manual>. It's a bit out-of-date in some details and doesn't cover newer QuickCheck features, but is still full of good advice. * <https://begriffs.com/posts/2017-01-14-design-use-quickcheck.html>, a detailed tutorial written by a user of QuickCheck. . The <https://hackage.haskell.org/package/quickcheck-instances quickcheck-instances> companion package provides instances for types in Haskell Platform packages at the cost of additional dependencies.

Liquid Types for Haskell.

Various useful functions on tuples, overloaded on tuple size.

REST is a Rewriting library with online termination checking. For more details see the paper at https://arxiv.org/abs/2202.05872.

Bindings for freetype2, autogenerated by haskell-gi.

A wrapper for gi-gtk, adding a few more idiomatic API parts on top