| Name | Version | Description |
|---|---|---|
| haskell-protolude | A sensible set of defaults for writing custom Preludes. | |
| haskell-psqueues | Pure priority search queues | |
| haskell-ptr | Experimental abstractions for operations on pointers | |
| haskell-puremd5 | A Haskell-only implementation of the MD5 digest (hash) algorithm | |
| haskell-puresat | Pure Haskell SAT-solver | |
| haskell-quic | Library for QUIC: A UDP-Based Multiplexed and Secure Transport | |
| haskell-quickcheck | Automatic testing of Haskell programs | |
| haskell-quickcheck-assertions | HUnit like assertions for QuickCheck | |
| haskell-quickcheck-classes | QuickCheck common typeclasses | |
| haskell-quickcheck-classes-base | QuickCheck common typeclasses from 'base' | |
| haskell-quickcheck-instances | Common quickcheck instances | |
| haskell-quickcheck-io | Use HUnit assertions as QuickCheck properties | |
| haskell-quickcheck-safe | Safe reimplementation of QuickCheck's core | |
| haskell-quickcheck-text | Alternative arbitrary instance for Text | |
| haskell-quickcheck-unicode | Generator and shrink functions for testing Unicode-related software. | |
| haskell-quote-quot | Divide without division | |
| haskell-ral | Random access lists | |
| haskell-ram | memory and related abstraction stuff | |
| haskell-random | Pseudo-random number generation | |
| haskell-random-bytestring | Efficient generation of random bytestrings | |
| haskell-random-fu | Random number generation | |
| haskell-random-shuffle | Random shuffle implementation. | |
| haskell-ranged-sets | Ranged sets for Haskell | |
| haskell-rank2classes | Standard type constructor class hierarchy, only with methods of rank 2 types | |
| haskell-rate-limit | A basic library for rate-limiting IO actions. | |
| haskell-raw-strings-qq | Raw string literals for Haskell | |
| haskell-rawfilepath | Use RawFilePath instead of FilePath | |
| haskell-readable | Reading from Text and ByteString | |
| haskell-rebase | A more progressive alternative to the "base" package | |
| haskell-recaptcha | Functions for using the reCAPTCHA service in web applications. | |
| haskell-recursion-schemes | Representing common recursion patterns as higher-order functions | |
| haskell-recv | Efficient network recv | |
| haskell-reducers | Semigroups, specialized containers and a general map/reduce framework | |
| haskell-refact | Specify refactorings to perform with apply-refact | |
| haskell-refinery | Toolkit for building proof automation systems | |
| haskell-reflection | Reifies arbitrary terms into types that can be reflected back into terms | |
| haskell-regex | Toolkit for regex-base | |
| haskell-regex-applicative | Regex-based parsing with applicative interface | |
| haskell-regex-applicative-text | Wrapped regex-applicative primitives to work with Text | |
| haskell-regex-base | Common "Text.Regex.*" API for Regex matching | |
| haskell-regex-compat | Replaces and enhances Text.Regex | |
| haskell-regex-compat-tdfa | One module layer over regex-tdfa to replace Text.Regex. | |
| haskell-regex-pcre | PCRE Backend for Text.Regex (regex-base) | |
| haskell-regex-posix | POSIX Backend for Text.Regex (regex-base) | |
| haskell-regex-tdfa | Pure Haskell Tagged DFA Backend for Text.Regex (regex-base) | |
| haskell-reinterpret-cast | Memory reinterpretation casts for Float/Double and Word32/Word64 | |
| haskell-relude | Safe, performant, user-friendly and lightweight Haskell Standard Library. | |
| haskell-repline | Haskeline wrapper for GHCi-like REPL interfaces | |
| haskell-req | HTTP client library | |
| haskell-rere | Regular-expressions extended with fixpoints for context-free powers |
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