Issues

Organized following the structure of the  Haskell 98 Report.

Lexical Structure

• QualifiedIdentifiers
• NondecreasingIndentation
• Eliminate Tabs

Expressions

• TupleSections
• ParallelListComp
• RecursiveDo
• Arrows
• PatternGuards
• MultiWayIf

Declarations and Bindings

• Overview of Types and Classes
  • FlexibleContexts
• User-Defined Datatypes
  • ExistingRecords
  • EmptyDataDecls
  • PolymorphicComponents
  • ExistentialQuantification
  • GADTs
  • NewtypeDeriving
• Type Classes and Overloading
  • Class Declarations
    • ClassMethodTypes
    • MultiParamTypeClasses
    • FunctionalDependencies
    • AssociatedTypes
  • Instance Declarations
    • TypeSynonymInstances
    • FlexibleInstances or UndecidableInstances
    • OverlappingInstances or IncoherentInstances
  • Ambiguous Types, and Defaults
    • Defaulting
  • Implicit Parameters (new)
    • ImplicitParams
    • LinearImplicitParams
• Nested Declarations
  • Rank2Types or RankNTypes
  • ScopedTypeVariables
• Static Semantics of Function and Pattern Bindings
  • RelaxedDependencyAnalysis
• Kind Inference

Modules

• HierarchicalModules
• ModuleSystem

Predefined Types and Classes

Basic Input/Output

Standard Prelude

• Shrink the Prelude

Specification of Derived Instances

• DerivedInstances

Compiler Pragmas

• NewPragmas

Libraries

• MinorLibraryChanges
• NewLibraryCandidates
• LibraryVersioning

FFI

• ForeignFunctionInterface
• ForeignData