Communicate with USB devices

XML parser-printer supporting Ur/Web syntax extensions

A package for updatable discrete distributions

Universal Resource Names

Painfully simple URL deployment

Generate or process x-www-urlencoded data

Simple, declarative, expressive URL routing -- on happstack

Decode percent-encoded strings

Parallel link checker

Encoding and decoding of URL slugs

Parse/format generic key/value URLs from record data types

Decoders for URL-encoding (aka Percent-encoding)

Memory efficient url type and parser

A library for working with URLs

Parsing & Quasiquoting for RFC 6570 URI Templates

URI template library for Haskell

A simple library for parsing and generating URIs

uri-enumerator backend for the file scheme (deprecated)

Read and write URIs (deprecated)

A uri encoder to make your strings less readable

Unicode aware uri-encoding

Read and write URIs (deprecated)

Aeson instances for URI Bytestring

Haskell URI parsing as ByteStrings

Library for working with URIs

Ur/Web static content generator

Minimalistic CLI RSS reader

Hoon-style atom manipulation and printing functions

Talk to Urbit from Haskell

Talk to Urbit from Haskell

Binding to upskirt

Upload test

Haskell client for Uploadcare

A style of maintaining and upgrading Haskell projects

Update all your git repositories with just one command

Software management tool

Command-line tool to generate paths for moving upward in a file system

Units of measure as a GHC type-checker plugin

Unzip functions for general Traversable containers

Unwrapping sums/products lifted to functors

converts between primitives

A command line tool to identify unused code

Utility construction of the graph depending unusable packages

An extension removing the sequentiality from monads

Solve Boggle-like word games

Unsatisfiable type class

Like unsafeperformIO, but for the ST monad

Flexible access control for unsafe operations and instances

Create pure futures using lazy IO

Compiler plugin for loop unrolling

An attoparsec roundtrip

An unpacked validation data type

An unpacked these data type

optional text that unpacks well

maybes of numeric values with fewer indirections

An unpacked maybe data type

An unpacked either data type

Unpacked containers via backpack

Monad transformers that mirror worker-wrapper transformations

A specialization of `HashMap Int v`

Graph library using unordered-containers

Efficient hashing-based container types

Rematch support for unordered containers

Efficient hashing-based container types

Extract useful information from Amiga MED files

A Library for the manipulation of images

Tool to convert literate code between styles or to code

Generalization of io-streams to MonadUnliftIO

Use MonadUnliftIO on servant APIs

Data.Pool generalized to MonadUnliftIO.

UnliftIO using well-typed Paths

Fast and robust message queues for concurrent processes

The MonadUnliftIO typeclass for unlifting monads to IO

The MonadUnliftIO typeclass for unlifting monads to IO (batteries included)

GHC Haskell lists of non-thunks (things of kind TYPE 'UnliftedRep)

Unlifted and levity-polymorphic types

(un)lifted classes and functions for the STM monad

Typeclass for monads that can be unlifted to arbitrary base monads

Unleash feature toggle client core

Unleash feature toggle client

Unlambda interpreter

Bidirectional JSON parsing and generation

POSIX functionality

Unix time parser/formatter and utilities

Straightforward bindings to the posix API

Fast and flexible primitives for recursive file system IO on Posix systems

POSIX pseudo-terminal support

Run processes on Unix systems, with a conduit interface (deprecated)

Unix memory syscalls

Support for writev, pwrite and pread

POSIX operations on Handles

Comprehensive bindings to fcntl(2)

Portable POSIX-compatibility layer

Unix/Posix-specific functions for ByteStrings

Custom prelude used in Serokell

Construct a Dec's ancestor list