Skip to content

GHC
GHC

language pragma history

Last edited by Takenobu Tani
New page Page history Edit

{-# LANGUAGE #-} Pragma History

Here is the list of language extensions added (and sometimes removed) by the Glasgow Haskell Compiler (GHC) for each major version release. This may be useful for those interested in seeing whether an extension is available on an older version of GHC for compatibility reasons.

See also GHC Boot Library Version History, which tabulates the GHC versions against the versions of the base library and other boot libraries.

See also http://damianfral.github.io/ghcaniuse/.

See also Language options in GHC User's Guide.

Changes in GHC 8.10

Added LANGUAGE extensions:

  • [No]CUSKs
  • [No]ImportQualifiedPost
  • [No]StandaloneKindSignatures
  • [No]UnliftedNewtypes

Changes in GHC 8.8

Nothing

Changes in GHC 8.6

Added LANGUAGE extensions:

  • [No]BlockArguments
  • [No]DerivingVia
  • [No]NumericUnderscores
  • [No]QuantifiedConstraints
  • [No]StarIsType

Changes in GHC 8.4

Added LANGUAGE extensions:

  • [No]EmptyDataDeriving
  • [No]HexFloatLiterals

Changes in GHC 8.2

Added LANGUAGE extensions:

  • [No]DerivingStrategies
  • [No]UnboxedSums

Changes in GHC 8.0

Added LANGUAGE extensions:

  • [No]ApplicativeDo
  • [No]DeriveLift
  • [No]DuplicateRecordFields
  • [No]TypeFamilyDependencies
  • [No]MonadFailDesugaring
  • [No]OverloadedLabels
  • [No]Strict
  • [No]StrictData
  • [No]TemplateHaskellQuotes
  • [No]TypeApplications
  • [No]TypeInType
  • [No]UndecidableSuperClasses

Changes in GHC 7.10

Added LANGUAGE extensions:

  • [No]BinaryLiterals
  • [No]DeriveAnyClass
  • [No]NamedWildCards
  • [No]PartialTypeSignatures
  • [No]StaticPointers

Changes in GHC 7.8

Added LANGUAGE extensions:

  • [No]AllowAmbiguousTypes
  • [No]AutoDeriveTypeable
  • [No]EmptyCase
  • [No]JavaScriptFFI
  • [No]NegativeLiterals
  • [No]NullaryTypeClasses
  • [No]NumDecimals
  • [No]OverloadedLists
  • [No]PatternSynonyms
  • [No]RoleAnnotations

Changes in GHC 7.6

Added LANGUAGE extensions:

  • [No]ExplicitNamespaces
  • [No]InstanceSigs
  • [No]LambdaCase
  • [No]MultiWayIf

Changes in GHC 7.4

Added LANGUAGE extensions:

  • Unsafe
  • [No]CApiFFI
  • [No]ConstraintKinds
  • [No]DataKinds
  • [No]PolyKinds (Warning: PolyKinds yields broken interface files in 7.4! This was fixed in 7.6)
  • [No]TraditionalRecordSyntax

Removed LANGUAGE extensions:

  • SafeImports

Changes in GHC 7.2

Added LANGUAGE extensions:

  • Safe
  • SafeImports
  • Trustworthy
  • [No]DefaultSignatures
  • [No]DeriveGeneric
  • [No]GADTSyntax
  • [No]InterruptibleFFI
  • [No]MonadComprehensions
  • [No]NondecreasingIndentation
  • [No]ParallelArrays
  • [No]RelaxedLayout

Removed LANGUAGE extensions:

  • [No]Generics
  • [No]NewQualifiedOperators
  • [No]PArr

Changes in GHC 7.0 (since GHC 6.12)

Added LANGUAGE extensions:

  • Haskell2010
  • Haskell98
  • [No]AlternativeLayoutRule
  • [No]AlternativeLayoutRuleTransitional
  • [No]DatatypeContexts
  • [No]DoAndIfThenElse
  • [No]RebindableSyntax

Language pragmas existing prior to GHC 7.0

TODO