Add TypeAbstractions extension

Author: ffaf1

Cabal-syntax/src/Language/Haskell/Extension.hs

@@ -540,6 +540,8 @@ data KnownExtension
     AlternativeLayoutRuleTransitional
   | -- | Undocumented parsing-related extensions introduced in GHC 7.2.
     RelaxedLayout
+  | -- | Allow the use of type abstraction syntax.
+    TypeAbstractions
   deriving (Generic, Show, Read, Eq, Ord, Enum, Bounded, Typeable, Data)
 
 instance Binary KnownExtension

Cabal-tests/tests/UnitTests/Distribution/Utils/Structured.hs

@@ -33,15 +33,15 @@ md5Check proxy md5Int = structureHash proxy @?= md5FromInteger md5Int
 md5CheckGenericPackageDescription :: Proxy GenericPackageDescription -> Assertion
 md5CheckGenericPackageDescription proxy = md5Check proxy
 #if MIN_VERSION_base(4,19,0)
-    0xf5fdb32b43aca790192f44d9ecaa9689
+    0x87037bc65fba873f53c03ce572a42229
 #else
-    0xb287a6f04e34ef990cdd15bc6cb01c76
+    0x5817c798e23df281d794ad27754ad43f
 #endif
 
 md5CheckLocalBuildInfo :: Proxy LocalBuildInfo -> Assertion
 md5CheckLocalBuildInfo proxy = md5Check proxy
 #if MIN_VERSION_base(4,19,0)
-    0x205fbe2649bc5e488bce50c07a71cadb
+    0x83cb87bceb4c1634e7dda192c3ad6579
 #else
-    0x26e91a71ebd19d4d6ce37f798ede249a
+    0x4beeb42e94807be904bc5d15355c98cd
 #endif

changelog.d/pr-9502

@@ -0,0 +1,11 @@
+synopsis: Add language extension `TypeAbstractions`
+packages: Cabal-syntax
+prs: #9502
+issues: #9496
+
+description: {
+
+- Adds support for the TypeAbstractions language extension.
+
+}
+

editors/vim/syntax/cabal.vim

@@ -268,6 +268,7 @@ syn keyword cabalExtension contained
   \ TraditionalRecordSyntax
   \ TransformListComp
   \ TupleSections
+  \ TypeAbstractions
   \ TypeApplications
   \ TypeData
   \ TypeFamilies
@@ -408,6 +409,7 @@ syn keyword cabalExtension contained
   \ NoTraditionalRecordSyntax
   \ NoTransformListComp
   \ NoTupleSections
+  \ NoTypeAbstractions
   \ NoTypeApplications
   \ NoTypeData
   \ NoTypeFamilies