From ea7f8af293d3202f9d24b3b73a948b2c0869bc0c Mon Sep 17 00:00:00 2001
From: Torsten Schmits <git@tryp.io>
Date: Wed, 15 Mar 2023 13:52:33 +0100
Subject: [PATCH] add the extension ListTuplePuns (GHC proposal 475)
---
Cabal-syntax/src/Language/Haskell/Extension.hs | 3 +++
.../tests/UnitTests/Distribution/Utils/Structured.hs | 8 ++++----
changelog.d/pr-8854 | 9 +++++++++
editors/vim/syntax/cabal.vim | 1 +
4 files changed, 17 insertions(+), 4 deletions(-)
create mode 100644 changelog.d/pr-8854
diff --git a/Cabal-syntax/src/Language/Haskell/Extension.hs b/Cabal-syntax/src/Language/Haskell/Extension.hs
index 3fe8a60b38..d5fb797eea 100644
--- a/Cabal-syntax/src/Language/Haskell/Extension.hs
+++ b/Cabal-syntax/src/Language/Haskell/Extension.hs
@@ -542,6 +542,9 @@ data KnownExtension
RelaxedLayout
| -- | Allow the use of type abstraction syntax.
TypeAbstractions
+ | -- | Allow the use of built-in syntax for list, tuple and sum type constructors
+ -- rather than being exclusive to data constructors.
+ ListTuplePuns
deriving (Generic, Show, Read, Eq, Ord, Enum, Bounded, Typeable, Data)
instance Binary KnownExtension
diff --git a/Cabal-tests/tests/UnitTests/Distribution/Utils/Structured.hs b/Cabal-tests/tests/UnitTests/Distribution/Utils/Structured.hs
index 1c571ad5b8..64fff30e0d 100644
--- a/Cabal-tests/tests/UnitTests/Distribution/Utils/Structured.hs
+++ b/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)
- 0xbaf013a54a9ae4dab8d9c8beecb5ac5d
+ 0x4136daf844669c3c272845160cb5a908
#else
- 0xcbd99e3b359decfab4b25e1335067f72
+ 0x196b441722dfe556ed5b5d1d874741b3
#endif
md5CheckLocalBuildInfo :: Proxy LocalBuildInfo -> Assertion
md5CheckLocalBuildInfo proxy = md5Check proxy
#if MIN_VERSION_base(4,19,0)
- 0x403539e40a138deaf1a1189aa349cff2
+ 0x8a30fa23374160aac9cdd1996dc5112b
#else
- 0x279674c69cfcfd5e8ffd51bc02965cd7
+ 0x2e959a7f1da8f0d11f6923831ab6ab55
#endif
diff --git a/changelog.d/pr-8854 b/changelog.d/pr-8854
new file mode 100644
index 0000000000..8b77d09d3e
--- /dev/null
+++ b/changelog.d/pr-8854
@@ -0,0 +1,9 @@
+synopsis: Add language extension ListTuplePuns
+packages: Cabal-syntax
+prs: #8854
+
+description: {
+
+- adds support for the `ListTuplePuns` language extension (GHC proposal #475)
+
+}
diff --git a/editors/vim/syntax/cabal.vim b/editors/vim/syntax/cabal.vim
index bb075d3f10..210b637c14 100644
--- a/editors/vim/syntax/cabal.vim
+++ b/editors/vim/syntax/cabal.vim
@@ -209,6 +209,7 @@ syn keyword cabalExtension contained
\ LexicalNegation
\ LiberalTypeSynonyms
\ LinearTypes
+ \ ListTuplePuns
\ RequiredTypeArguments
\ MagicHash
\ MonadComprehensions
--
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