The main module that reexports all functionality. It's allowed to use it without importing any other modules. If you want to use relude per-module basis then just add next lines to your module to replace default Prelude:

{-# LANGUAGE NoImplicitPrelude #-}

import Relude

Alternatively, you can replace base package in your dependencies with base-noprelude and add the following Prelude module to your package to use relude by default in every module instead of Prelude:

module Prelude (module Relude) where
import Relude

This documentation section contains the description of internal module structure to help navigate between modules, search for interesting functionalities and understand where you need to put your new changes (if you're a contributor).

Functions and types are distributed across multiple modules and grouped by meaning or category. Name of the module should give you hints regarding what this module contains. Some categories contain a significant amount of both reexported functions and functions of our own. To make it easier to understand these enormous chunks of functions, all reexported stuff is moved into the separate module with name Relude.SomeCategory.Reexport and our own functions and types are in Relude.SomeCategory.SomeName. For example, see modules Relude.Foldable.Fold and Relude.Foldable.Reexport.

Below is a short description of what you can find under different modules, imported by default from Relude:

• Relude.Applicative: reexports from Control.Applicative and some general-purpose applicative combinators.
• Relude.Base: different general types and type classes from base package (Int, Num, Generic, etc.) not exported by other modules.
• Relude.Bool: Bool data type with different predicates and combinators.
• Relude.Container: One typeclass for creating data structures from singleton lement and reexports of types from packages containers and unordered-containers.
• Relude.Debug: trace-like debugging functions with compile-time warnings (so you don't forget to remove them).
• Relude.DeepSeq: reexports from Control.DeepSeq module and functions to evaluate expressions to weak-head normal form or normal form.
• Relude.Exception: reexports Control.Exception, introduces bug function as better error and Exc pattern synonym for convenient pattern-matching on exceptions.
• Relude.File: functions to work with file content as Text or ByteString.
• Relude.Foldable: reexports functions for Foldable and Traversable.
• Relude.Function: almost everything from Data.Function module.
• Relude.Functor: reexports from Data.Functor, Data.Bifunctor, other useful Functor combinators.
• Relude.Lifted: lifted to MonadIO functions to work with console, files, IORefs, MVars, etc.
• Relude.List: big chunk of Data.List, NonEmpty type and functions for this type (head, tail, last, init).
• Relude.Monad: reexports from Data.Maybe and Data.Either modules, monad transormers, various combinators.
• Relude.Monoid: reexports from Data.Monoid and Data.Semigroup.
• Relude.Nub: better versions of nub function for list.
• Relude.Print: printing to terminal functions for Text and ByteString.
• Relude.String: reexports from text and bytestring packages with conversion functions between different textual types.

And these modules are not exported by default, but you can easily bring them to every module in your package by modifying your Prelude file:

• Relude.Extra.Bifunctor: additional combinators for Bifunctor.
• Relude.Extra.CallStack: useful functions to extract information from CallStack.
• Relude.Extra.Enum: extra utilities for types that implement Bounded and Enum constraints.
• Relude.Extra.Foldable1: Foldable1 typeclass like Foldable but for non-empty structures.
• Relude.Extra.Group: grouping functions, polymorphic on return Map type.
• Relude.Extra.Map: typeclass for Map-like data structures.
• Relude.Extra.Newtype: generic functions that automatically work for any newtype.
• Relude.Extra.Tuple: functions for working with tuples.
• Relude.Extra.Type: functions for inspecting and working with types.
• Relude.Extra.Validation: Validation data type.
• Relude.Unsafe: unsafe partial functions (produce error) for lists and Maybe.