[arch-commits] Commit in (5 files)
Felix Yan
felixonmars at archlinux.org
Sun Nov 29 15:34:01 UTC 2020
Date: Sunday, November 29, 2020 @ 15:34:01
Author: felixonmars
Revision: 766343
addpkg: haskell-brittany 0.12.2.0-1
Added:
haskell-brittany/
haskell-brittany/repos/
haskell-brittany/trunk/
haskell-brittany/trunk/PKGBUILD
haskell-brittany/trunk/ghc-8.10.patch
----------------+
PKGBUILD | 59
ghc-8.10.patch | 3558 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 3617 insertions(+)
Added: haskell-brittany/trunk/PKGBUILD
===================================================================
--- haskell-brittany/trunk/PKGBUILD (rev 0)
+++ haskell-brittany/trunk/PKGBUILD 2020-11-29 15:34:01 UTC (rev 766343)
@@ -0,0 +1,59 @@
+# Maintainer: Felix Yan <felixonmars at archlinux.org>
+
+_hkgname=brittany
+pkgname=haskell-brittany
+pkgver=0.12.2.0
+pkgrel=1
+pkgdesc="Haskell source code formatter"
+url="https://github.com/lspitzner/brittany/"
+license=("AGPL")
+arch=('x86_64')
+depends=('ghc-libs' 'haskell-aeson' 'haskell-butcher' 'haskell-cmdargs' 'haskell-czipwith'
+ 'haskell-data-tree-print' 'haskell-extra' 'haskell-ghc-exactprint' 'haskell-ghc-paths'
+ 'haskell-monad-memo' 'haskell-multistate' 'haskell-random' 'haskell-safe'
+ 'haskell-strict' 'haskell-syb' 'haskell-uniplate' 'haskell-unsafe' 'haskell-yaml')
+makedepends=('ghc' 'uusi' 'haskell-hspec')
+source=("https://hackage.haskell.org/packages/archive/$_hkgname/$pkgver/$_hkgname-$pkgver.tar.gz"
+ ghc-8.10.patch)
+sha256sums=('f437edc73106185213abdbfdc3d34a2f449c341cebd738b51ed39d683ca4670f'
+ 'e0b4617fe2cb67f4ab035fe0ac333d506c4acfd7451b134ec76ee1eca6ee2b64')
+
+prepare() {
+ cd $_hkgname-$pkgver
+ patch -p1 -i ../ghc-8.10.patch
+ uusi -r semigroups:Cabal -u random $_hkgname.cabal
+
+ # Hack to use Cabal's compatibility layer of semigroups
+ sed -i 's/import Data.Semigroup.Generic/import Distribution.Compat.Semigroup/' src/Language/Haskell/Brittany/Internal/Config/Types.hs
+}
+
+build() {
+ cd $_hkgname-$pkgver
+
+ runhaskell Setup configure -O --enable-shared --enable-executable-dynamic --disable-library-vanilla \
+ --prefix=/usr --docdir=/usr/share/doc/$pkgname --enable-tests \
+ --dynlibdir=/usr/lib --libsubdir=\$compiler/site-local/\$pkgid \
+ --ghc-option=-optl-Wl\,-z\,relro\,-z\,now \
+ --ghc-option='-pie'
+
+ runhaskell Setup build
+ runhaskell Setup register --gen-script
+ runhaskell Setup unregister --gen-script
+ sed -i -r -e "s|ghc-pkg.*update[^ ]* |&'--force' |" register.sh
+ sed -i -r -e "s|ghc-pkg.*unregister[^ ]* |&'--force' |" unregister.sh
+}
+
+check() {
+ cd $_hkgname-$pkgver
+ runhaskell Setup test
+}
+
+package() {
+ cd $_hkgname-$pkgver
+
+ install -D -m744 register.sh "$pkgdir"/usr/share/haskell/register/$pkgname.sh
+ install -D -m744 unregister.sh "$pkgdir"/usr/share/haskell/unregister/$pkgname.sh
+ runhaskell Setup copy --destdir="$pkgdir"
+ install -D -m644 LICENSE -t "$pkgdir"/usr/share/licenses/$pkgname/
+ rm -f "$pkgdir"/usr/share/doc/$pkgname/LICENSE
+}
Added: haskell-brittany/trunk/ghc-8.10.patch
===================================================================
--- haskell-brittany/trunk/ghc-8.10.patch (rev 0)
+++ haskell-brittany/trunk/ghc-8.10.patch 2020-11-29 15:34:01 UTC (rev 766343)
@@ -0,0 +1,3558 @@
+From 17d07edb0a687053fbeb39e0bdf07415ee35a278 Mon Sep 17 00:00:00 2001
+From: jneira <atreyu.bbb at gmail.com>
+Date: Wed, 13 May 2020 10:44:37 +0200
+Subject: [PATCH 02/17] Relax upper bounds to include updated packages
+
+---
+ brittany.cabal | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/brittany.cabal b/brittany.cabal
+index 818e818..590373f 100644
+--- a/brittany.cabal
++++ b/brittany.cabal
+@@ -91,10 +91,10 @@ library {
+ -fno-warn-redundant-constraints
+ }
+ build-depends:
+- { base >=4.9 && <4.14
+- , ghc >=8.0.1 && <8.9
++ { base >=4.9 && <4.15
++ , ghc >=8.0.1 && <8.11
+ , ghc-paths >=0.1.0.9 && <0.2
+- , ghc-exactprint >=0.5.8 && <0.6.3
++ , ghc-exactprint >=0.5.8 && <0.6.4
+ , transformers >=0.5.2.0 && <0.6
+ , containers >=0.5.7.1 && <0.7
+ , mtl >=2.2.1 && <2.3
+@@ -118,7 +118,7 @@ library {
+ , semigroups >=0.18.2 && <0.20
+ , cmdargs >=0.10.14 && <0.11
+ , czipwith >=1.0.1.0 && <1.1
+- , ghc-boot-th >=8.0.1 && <8.9
++ , ghc-boot-th >=8.0.1 && <8.11
+ , filepath >=1.4.1.0 && <1.5
+ , random >= 1.1 && <1.2
+ }
+
+From b69a8f983c070564b41b6fdec160af6d8aff730b Mon Sep 17 00:00:00 2001
+From: jneira <atreyu.bbb at gmail.com>
+Date: Wed, 13 May 2020 10:45:14 +0200
+Subject: [PATCH 03/17] Adapt to new GHC modules organization
+
+---
+ .../Haskell/Brittany/Internal/ExactPrintUtils.hs | 6 ++++++
+ src/Language/Haskell/Brittany/Internal/Prelude.hs | 8 ++++++--
+ src/Language/Haskell/Brittany/Internal/Utils.hs | 15 ++++++++++++---
+ 3 files changed, 24 insertions(+), 5 deletions(-)
+
+diff --git a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+index 0273d85..5dcf840 100644
+--- a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
++++ b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+@@ -33,7 +33,13 @@ import qualified Lexer as GHC
+ import qualified StringBuffer as GHC
+ import qualified Outputable as GHC
+ import qualified CmdLineParser as GHC
++
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
++
+ import SrcLoc ( SrcSpan, Located )
+
+
+diff --git a/src/Language/Haskell/Brittany/Internal/Prelude.hs b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+index 453f076..a0757d8 100644
+--- a/src/Language/Haskell/Brittany/Internal/Prelude.hs
++++ b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+@@ -13,9 +13,13 @@ where
+
+ -- rather project-specific stuff:
+ ---------------------------------
+-#if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs.Extension as E ( GhcPs )
++#else
++# if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ import HsExtension as E ( GhcPs )
+-#endif
++# endif /* ghc-8.4 */
++#endif /* ghc-8.10.1 */
+
+ import RdrName as E ( RdrName )
+ #if MIN_VERSION_ghc(8,8,0)
+diff --git a/src/Language/Haskell/Brittany/Internal/Utils.hs b/src/Language/Haskell/Brittany/Internal/Utils.hs
+index 435ad96..9edcb7e 100644
+--- a/src/Language/Haskell/Brittany/Internal/Utils.hs
++++ b/src/Language/Haskell/Brittany/Internal/Utils.hs
+@@ -59,9 +59,13 @@ import Language.Haskell.Brittany.Internal.Config.Types
+ import Language.Haskell.Brittany.Internal.Types
+
+ import qualified Data.Generics.Uniplate.Direct as Uniplate
+-#if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import qualified GHC.Hs.Extension as HsExtension
++#else
++# if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ import qualified HsExtension
+-#endif
++# endif /* ghc-8.4 */
++#endif /* ghc-8.10.1 */
+
+
+
+@@ -299,6 +303,10 @@ lines' s = case break (== '\n') s of
+ (s1, [_]) -> [s1, ""]
+ (s1, (_:r)) -> s1 : lines' r
+
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++absurdExt :: HsExtension.NoExtField -> a
++absurdExt = error "cannot construct NoExtField"
++#else
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ -- | A method to dismiss NoExt patterns for total matches
+ absurdExt :: HsExtension.NoExt -> a
+@@ -306,4 +314,5 @@ absurdExt = error "cannot construct NoExt"
+ #else
+ absurdExt :: ()
+ absurdExt = ()
+-#endif
++#endif /* ghc-8.6 */
++#endif /* ghc-8.10.1 */
+
+From adb642353d6c3166eea4f52dc3ba83382dcaef04 Mon Sep 17 00:00:00 2001
+From: Ximin Luo <infinity0 at pwned.gg>
+Date: Fri, 29 May 2020 23:26:51 +0100
+Subject: [PATCH 05/17] more GHC 8.10.1 fixes
+
+---
+ src/Language/Haskell/Brittany/Internal.hs | 9 +++++++
+ .../Brittany/Internal/ExactPrintUtils.hs | 11 +++++++-
+ .../Brittany/Internal/Layouters/DataDecl.hs | 4 +++
+ .../Brittany/Internal/Layouters/Decl.hs | 15 ++++++++---
+ .../Brittany/Internal/Layouters/Expr.hs | 25 ++++++++++++++++++-
+ .../Brittany/Internal/Layouters/Expr.hs-boot | 4 +++
+ .../Haskell/Brittany/Internal/Layouters/IE.hs | 7 +++++-
+ .../Brittany/Internal/Layouters/Import.hs | 12 +++++++++
+ .../Brittany/Internal/Layouters/Module.hs | 7 +++++-
+ .../Brittany/Internal/Layouters/Pattern.hs | 12 +++++++++
+ .../Brittany/Internal/Layouters/Stmt.hs | 4 +++
+ .../Brittany/Internal/Layouters/Stmt.hs-boot | 4 +++
+ .../Brittany/Internal/Layouters/Type.hs | 12 +++++++--
+ .../Haskell/Brittany/Internal/Utils.hs | 10 +++-----
+ 14 files changed, 121 insertions(+), 15 deletions(-)
+
+diff --git a/src/Language/Haskell/Brittany/Internal.hs b/src/Language/Haskell/Brittany/Internal.hs
+index 1d9266f..1fc3e12 100644
+--- a/src/Language/Haskell/Brittany/Internal.hs
++++ b/src/Language/Haskell/Brittany/Internal.hs
+@@ -61,7 +61,12 @@ import GHC ( Located
+ )
+ import RdrName ( RdrName(..) )
+ import SrcLoc ( SrcSpan )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++import Bag
++#else
+ import HsSyn
++#endif
+ import qualified DynFlags as GHC
+ import qualified GHC.LanguageExtensions.Type as GHC
+
+@@ -380,7 +385,11 @@ parsePrintModuleTests conf filename input = do
+ let inputStr = Text.unpack input
+ parseResult <- ExactPrint.Parsers.parseModuleFromString filename inputStr
+ case parseResult of
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ Left err -> return $ Left $ "parsing error: " ++ show (bagToList (show <$> err))
++#else
+ Left (_ , s ) -> return $ Left $ "parsing error: " ++ s
++#endif
+ Right (anns, parsedModule) -> runExceptT $ do
+ (inlineConf, perItemConf) <-
+ case extractCommentConfigs anns (getTopLevelDeclNameMap parsedModule) of
+diff --git a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+index 5dcf840..6115f52 100644
+--- a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
++++ b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+@@ -36,6 +36,7 @@ import qualified CmdLineParser as GHC
+
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ import GHC.Hs
++import Bag
+ #else
+ import HsSyn
+ #endif
+@@ -96,7 +97,11 @@ parseModuleWithCpp cpp opts args fp dynCheck =
+ ++ show (warnings <&> warnExtractorCompat)
+ x <- ExceptT.ExceptT $ liftIO $ dynCheck dflags2
+ res <- lift $ ExactPrint.parseModuleApiAnnsWithCppInternal cpp dflags2 fp
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ either (\err -> ExceptT.throwE $ "transform error: " ++ show (bagToList (show <$> err)))
++#else
+ either (\(span, err) -> ExceptT.throwE $ show span ++ ": " ++ err)
++#endif
+ (\(a, m) -> pure (a, m, x))
+ $ ExactPrint.postParseTransform res opts
+
+@@ -129,7 +134,11 @@ parseModuleFromString args fp dynCheck str =
+ dynCheckRes <- ExceptT.ExceptT $ liftIO $ dynCheck dflags1
+ let res = ExactPrint.parseModuleFromStringInternal dflags1 fp str
+ case res of
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ Left err -> ExceptT.throwE $ "parse error: " ++ show (bagToList (show <$> err))
++#else
+ Left (span, err) -> ExceptT.throwE $ showOutputable span ++ ": " ++ err
++#endif
+ Right (a , m ) -> pure (a, m, dynCheckRes)
+
+
+@@ -193,7 +202,7 @@ commentAnnFixTransformGlob ast = do
+ , ExactPrint.annsDP = assocs'
+ }
+ ExactPrint.modifyAnnsT $ \anns -> Map.insert annKey1 ann1' anns
+-
++
+
+
+ commentAnnFixTransform :: GHC.ParsedSource -> ExactPrint.Transform ()
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+index 00453b3..4d2b93a 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+@@ -19,7 +19,11 @@ import Language.Haskell.Brittany.Internal.Config.Types
+ import RdrName ( RdrName(..) )
+ import GHC ( Located, runGhc, GenLocated(L), moduleNameString )
+ import qualified GHC
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import BasicTypes
+ import Language.Haskell.GHC.ExactPrint.Types ( mkAnnKey )
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+index f33b511..8ec8d74 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+@@ -37,8 +37,10 @@ import GHC ( runGhc
+ )
+ import SrcLoc ( SrcSpan, noSrcSpan, Located , getLoc, unLoc )
+ import qualified FastString
+-import HsSyn
+-#if MIN_VERSION_ghc(8,6,0)
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++import GHC.Hs.Extension (NoExtField (..))
++#elif MIN_VERSION_ghc(8,6,0)
+ import HsExtension (NoExt (..))
+ #endif
+ import Name
+@@ -1040,7 +1042,14 @@ layoutClsInst lcid@(L _ cid) = docLines
+ ]
+ where
+ layoutInstanceHead :: ToBriDocM BriDocNumbered
+-#if MIN_VERSION_ghc(8,6,0) /* 8.6 */
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ layoutInstanceHead =
++ briDocByExactNoComment
++ $ InstD NoExtField
++ . ClsInstD NoExtField
++ . removeChildren
++ <$> lcid
++#elif MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ layoutInstanceHead =
+ briDocByExactNoComment
+ $ InstD NoExt
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+index 660355c..d7c9a2b 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+@@ -19,7 +19,11 @@ import Language.Haskell.Brittany.Internal.Config.Types
+ import qualified Language.Haskell.GHC.ExactPrint.Types as ExactPrint.Types
+
+ import GHC ( runGhc, GenLocated(L), SrcSpan, moduleNameString, AnnKeywordId(..), RdrName(..) )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import qualified FastString
+ import BasicTypes
+@@ -521,7 +525,12 @@ layoutExpr lexpr@(L _ expr) = do
+ #else
+ ExplicitTuple args boxity -> do
+ #endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ let argExprs = args <&> \arg -> case arg of
++ (L _ (Present _ e)) -> (arg, Just e);
++ (L _ (Missing NoExtField)) -> (arg, Nothing)
++ (L _ XTupArg{}) -> error "brittany internal error: XTupArg"
++#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let argExprs = args <&> \arg -> case arg of
+ (L _ (Present _ e)) -> (arg, Just e);
+ (L _ (Missing NoExt)) -> (arg, Nothing)
+@@ -984,10 +993,18 @@ layoutExpr lexpr@(L _ expr) = do
+ else Just <$> docSharedWrapper layoutExpr rFExpr
+ return $ (lfield, lrdrNameToText lnameF, rFExpDoc)
+ recordExpression False indentPolicy lexpr nameDoc rFs
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ HsRecFields [] (Just (L _ 0)) -> do
++#else
+ HsRecFields [] (Just 0) -> do
++#endif
+ let t = lrdrNameToText lname
+ docWrapNode lname $ docLit $ t <> Text.pack " { .. }"
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ HsRecFields fs@(_:_) (Just (L _ dotdoti)) | dotdoti == length fs -> do
++#else
+ HsRecFields fs@(_:_) (Just dotdoti) | dotdoti == length fs -> do
++#endif
+ let nameDoc = docWrapNode lname $ docLit $ lrdrNameToText lname
+ fieldDocs <- fs `forM` \fieldl@(L _ (HsRecField (L _ fieldOcc) fExpr pun)) -> do
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+@@ -1137,12 +1154,15 @@ layoutExpr lexpr@(L _ expr) = do
+ HsStatic{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsStatic{}" lexpr
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++#else
+ HsArrApp{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsArrApp{}" lexpr
+ HsArrForm{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsArrForm{}" lexpr
++#endif
+ HsTick{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsTick{}" lexpr
+@@ -1152,6 +1172,8 @@ layoutExpr lexpr@(L _ expr) = do
+ HsTickPragma{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsTickPragma{}" lexpr
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++#else
+ EWildPat{} -> do
+ docLit $ Text.pack "_"
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+@@ -1169,6 +1191,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ELazyPat{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ELazyPat{}" lexpr
++#endif
+ HsWrap{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsWrap{}" lexpr
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+index 1f76032..733ac90 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+@@ -15,7 +15,11 @@ import Language.Haskell.Brittany.Internal.Types
+ import Language.Haskell.Brittany.Internal.LayouterBasics
+
+ import GHC ( runGhc, GenLocated(L), moduleNameString )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+
+
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+index f2c36de..bfe2679 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+@@ -18,9 +18,14 @@ import GHC ( unLoc
+ , AnnKeywordId(..)
+ , Located
+ )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++import GHC.Hs.ImpExp
++#else
+ import HsSyn
+-import Name
+ import HsImpExp
++#endif
++import Name
+ import FieldLabel
+ import qualified FastString
+ import BasicTypes
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+index bcce106..d5bf0dd 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+@@ -12,7 +12,11 @@ import GHC ( unLoc
+ , moduleNameString
+ , Located
+ )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import FieldLabel
+ import qualified FastString
+@@ -59,7 +63,11 @@ layoutImport limportD@(L _ importD) = docWrapNode limportD $ case importD of
+ hiding = maybe False fst mllies
+ minQLength = length "import qualified "
+ qLengthReal =
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ let qualifiedPart = if q /= NotQualified then length "qualified " else 0
++#else
+ let qualifiedPart = if q then length "qualified " else 0
++#endif
+ safePart = if safe then length "safe " else 0
+ pkgPart = maybe 0 ((+ 1) . Text.length) pkgNameT
+ srcPart = if src then length "{-# SOURCE #-} " else 0
+@@ -73,7 +81,11 @@ layoutImport limportD@(L _ importD) = docWrapNode limportD $ case importD of
+ [ appSep $ docLit $ Text.pack "import"
+ , if src then appSep $ docLit $ Text.pack "{-# SOURCE #-}" else docEmpty
+ , if safe then appSep $ docLit $ Text.pack "safe" else docEmpty
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ , if q /= NotQualified then appSep $ docLit $ Text.pack "qualified" else docEmpty
++#else
+ , if q then appSep $ docLit $ Text.pack "qualified" else docEmpty
++#endif
+ , maybe docEmpty (appSep . docLit) pkgNameT
+ ]
+ indentName =
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Module.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Module.hs
+index f899e08..3839ecd 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Module.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Module.hs
+@@ -9,9 +9,14 @@ import Language.Haskell.Brittany.Internal.Layouters.Import
+ import Language.Haskell.Brittany.Internal.Config.Types
+
+ import GHC (unLoc, runGhc, GenLocated(L), moduleNameString, AnnKeywordId(..))
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++import GHC.Hs.ImpExp
++#else
+ import HsSyn
+-import Name
+ import HsImpExp
++#endif
++import Name
+ import FieldLabel
+ import qualified FastString
+ import BasicTypes
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+index cd1b31e..de943b7 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+@@ -21,7 +21,11 @@ import GHC ( Located
+ , ol_val
+ )
+ import qualified GHC
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import BasicTypes
+
+@@ -136,14 +140,22 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ , docSeparator
+ , docLit $ Text.pack "}"
+ ]
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ ConPatIn lname (RecCon (HsRecFields [] (Just (L _ 0)))) -> do
++#else
+ ConPatIn lname (RecCon (HsRecFields [] (Just 0))) -> do
++#endif
+ -- Abc { .. } -> expr
+ let t = lrdrNameToText lname
+ Seq.singleton <$> docSeq
+ [ appSep $ docLit t
+ , docLit $ Text.pack "{..}"
+ ]
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++ ConPatIn lname (RecCon (HsRecFields fs@(_:_) (Just (L _ dotdoti)))) | dotdoti == length fs -> do
++#else
+ ConPatIn lname (RecCon (HsRecFields fs@(_:_) (Just dotdoti))) | dotdoti == length fs -> do
++#endif
+ -- Abc { a = locA, .. }
+ let t = lrdrNameToText lname
+ fds <- fs `forM` \(L _ (HsRecField (L _ fieldOcc) fPat pun)) -> do
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
+index 3aa3b5c..60ba54b 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
+@@ -17,7 +17,11 @@ import GHC ( runGhc
+ , GenLocated(L)
+ , moduleNameString
+ )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import qualified FastString
+ import BasicTypes
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs-boot b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs-boot
+index faf583a..1fab3c5 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs-boot
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs-boot
+@@ -13,7 +13,11 @@ import Language.Haskell.Brittany.Internal.Types
+ import Language.Haskell.Brittany.Internal.LayouterBasics
+
+ import GHC ( runGhc, GenLocated(L), moduleNameString )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import qualified FastString
+ import BasicTypes
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+index 940eac7..7a1fee4 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+@@ -25,7 +25,11 @@ import GHC ( runGhc
+ , AnnKeywordId (..)
+ )
+ import Language.Haskell.GHC.ExactPrint.Types ( mkAnnKey )
++#if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
++import GHC.Hs
++#else
+ import HsSyn
++#endif
+ import Name
+ import Outputable ( ftext, showSDocUnsafe )
+ import BasicTypes
+@@ -61,7 +65,9 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ t <- lrdrNameToTextAnnTypeEqualityIsSpecial name
+ docWrapNode name $ docLit t
+ #endif
+-#if MIN_VERSION_ghc(8,6,0)
++#if MIN_VERSION_ghc(8,10,1)
++ HsForAllTy _ _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
++#elif MIN_VERSION_ghc(8,6,0)
+ HsForAllTy _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
+ #else
+ HsForAllTy bndrs (L _ (HsQualTy (L _ cntxts) typ2)) -> do
+@@ -151,7 +157,9 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ )
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
++#if MIN_VERSION_ghc(8,10,1)
++ HsForAllTy _ _ bndrs typ2 -> do
++#elif MIN_VERSION_ghc(8,6,0)
+ HsForAllTy _ bndrs typ2 -> do
+ #else
+ HsForAllTy bndrs typ2 -> do
+diff --git a/src/Language/Haskell/Brittany/Internal/Utils.hs b/src/Language/Haskell/Brittany/Internal/Utils.hs
+index 9edcb7e..0a0d31f 100644
+--- a/src/Language/Haskell/Brittany/Internal/Utils.hs
++++ b/src/Language/Haskell/Brittany/Internal/Utils.hs
+@@ -304,15 +304,13 @@ lines' s = case break (== '\n') s of
+ (s1, (_:r)) -> s1 : lines' r
+
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+-absurdExt :: HsExtension.NoExtField -> a
+-absurdExt = error "cannot construct NoExtField"
+-#else
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++absurdExt :: HsExtension.NoExtCon -> a
++absurdExt = HsExtension.noExtCon
++#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ -- | A method to dismiss NoExt patterns for total matches
+ absurdExt :: HsExtension.NoExt -> a
+ absurdExt = error "cannot construct NoExt"
+ #else
+ absurdExt :: ()
+ absurdExt = ()
+-#endif /* ghc-8.6 */
+-#endif /* ghc-8.10.1 */
++#endif
+
+From 1e118a44ca9880b5e96f85a6f8c12d756f08fa8b Mon Sep 17 00:00:00 2001
+From: Luke Lau <luke_lau at icloud.com>
+Date: Thu, 6 Aug 2020 18:50:10 +0100
+Subject: [PATCH 06/17] Fix build on GHC 8.8 and below
+
+---
+ src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+index 8ec8d74..e512b9a 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+@@ -41,6 +41,7 @@ import qualified FastString
+ import GHC.Hs
+ import GHC.Hs.Extension (NoExtField (..))
+ #elif MIN_VERSION_ghc(8,6,0)
++import HsSyn
+ import HsExtension (NoExt (..))
+ #endif
+ import Name
+
+From cf3bc5daf46220b609a7ffac6cd26a717c62edb7 Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Wed, 28 Oct 2020 08:45:29 -0400
+Subject: [PATCH 07/17] Allow strict 0.4
+
+---
+ brittany.cabal | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/brittany.cabal b/brittany.cabal
+index 590373f..704d505 100644
+--- a/brittany.cabal
++++ b/brittany.cabal
+@@ -110,7 +110,7 @@ library {
+ , aeson >=1.0.1.0 && <1.6
+ , extra >=1.4.10 && <1.8
+ , uniplate >=1.6.12 && <1.7
+- , strict >=0.3.2 && <0.4
++ , strict >=0.3.2 && <0.5
+ , monad-memo >=0.4.1 && <0.6
+ , unsafe >=0.0 && <0.1
+ , safe >=0.3.9 && <0.4
+
+From 096c438b2351288cbf237da652bad1ceca1d8cdb Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Sun, 15 Nov 2020 11:10:06 -0500
+Subject: [PATCH 10/17] Drop support for GHC 8.0
+
+---
+ .github/workflows/ci.yaml | 3 --
+ .travis.yml | 12 ++---
+ Makefile | 7 +--
+ README.md | 10 ++--
+ brittany.cabal | 6 +--
+ .../Haskell/Brittany/Internal/Config/Types.hs | 4 --
+ .../Brittany/Internal/ExactPrintUtils.hs | 2 +-
+ .../Brittany/Internal/Layouters/DataDecl.hs | 26 +--------
+ .../Brittany/Internal/Layouters/Decl.hs | 46 ++++------------
+ .../Brittany/Internal/Layouters/Expr.hs | 54 ++++---------------
+ .../Brittany/Internal/Layouters/Expr.hs-boot | 2 +-
+ .../Haskell/Brittany/Internal/Layouters/IE.hs | 16 ------
+ .../Brittany/Internal/Layouters/Import.hs | 10 ----
+ .../Brittany/Internal/Layouters/Pattern.hs | 15 ++----
+ .../Brittany/Internal/Layouters/Type.hs | 21 +-------
+ .../Haskell/Brittany/Internal/Prelude.hs | 6 +--
+ .../Haskell/Brittany/Internal/Types.hs | 2 -
+ stack-8.0.2.yaml | 12 -----
+ stack-8.0.2.yaml.lock | 54 -------------------
+ 19 files changed, 43 insertions(+), 265 deletions(-)
+ delete mode 100644 stack-8.0.2.yaml
+ delete mode 100644 stack-8.0.2.yaml.lock
+
+diff --git a/README.md b/README.md
+index 6fe5976..b009a37 100644
+--- a/README.md
++++ b/README.md
+@@ -1,4 +1,4 @@
+-# brittany [](https://hackage.haskell.org/package/brittany) [](https://www.stackage.org/package/brittany) [](http://travis-ci.org/lspitzner/brittany)
++# brittany [](https://hackage.haskell.org/package/brittany) [](https://www.stackage.org/package/brittany) [](http://travis-ci.org/lspitzner/brittany)
+ haskell source code formatter
+
+ 
+@@ -31,7 +31,7 @@ require fixing:
+ other module elements (data-decls, classes, instances, etc.)
+ are not transformed in any way; this extends to e.g. **bindings inside class
+ instance definitions** - they **won't be touched** (yet).
+-- By using `ghc-exactprint` as the parser, brittany supports full GHC
++- By using `ghc-exactprint` as the parser, brittany supports full GHC
+ including extensions, but **some of the less common syntactic elements
+ (even of 2010 haskell) are not handled**.
+ - **There are some known issues regarding handling of in-source comments.**
+@@ -48,7 +48,7 @@ log the size of the input, but _not_ the full input/output of requests.)
+
+ # Other usage notes
+
+-- Supports GHC versions `8.0`, `8.2`, `8.4`, `8.6`, `8.8`.
++- Supports GHC versions `8.2`, `8.4`, `8.6`, `8.8`.
+ - included in stackage with lts>=10.0 (or nightlies dating to >=2017-11-15)
+ - config (file) documentation is lacking.
+ - some config values can not be configured via commandline yet.
+@@ -127,13 +127,13 @@ log the size of the input, but _not_ the full input/output of requests.)
+ - Default mode of operation: Transform a single module, from `stdin` to `stdout`.
+ Can pass one or multiple files as input, and there is a flag to override them
+ in place instead of using `stdout` (since 0.9.0.0). So:
+-
++
+ ~~~~ .sh
+ brittany # stdin -> stdout
+ brittany mysource.hs # ./mysource.hs -> stdout
+ brittany --write-mode=inplace *.hs # apply formatting to all ./*.hs inplace
+ ~~~~
+-
++
+ - For stdin/stdout usage it makes sense to enable certain syntactic extensions
+ by default, i.e. to add something like this to your
+ `~/.config/brittany/config.yaml` (execute `brittany` once to create default):
+diff --git a/brittany.cabal b/brittany.cabal
+index 704d505..0c3ed7c 100644
+--- a/brittany.cabal
++++ b/brittany.cabal
+@@ -91,8 +91,8 @@ library {
+ -fno-warn-redundant-constraints
+ }
+ build-depends:
+- { base >=4.9 && <4.15
+- , ghc >=8.0.1 && <8.11
++ { base >=4.10 && <4.15
++ , ghc >=8.2.1 && <8.11
+ , ghc-paths >=0.1.0.9 && <0.2
+ , ghc-exactprint >=0.5.8 && <0.6.4
+ , transformers >=0.5.2.0 && <0.6
+@@ -118,7 +118,7 @@ library {
+ , semigroups >=0.18.2 && <0.20
+ , cmdargs >=0.10.14 && <0.11
+ , czipwith >=1.0.1.0 && <1.1
+- , ghc-boot-th >=8.0.1 && <8.11
++ , ghc-boot-th >=8.2.1 && <8.11
+ , filepath >=1.4.1.0 && <1.5
+ , random >= 1.1 && <1.2
+ }
+diff --git a/src/Language/Haskell/Brittany/Internal/Config/Types.hs b/src/Language/Haskell/Brittany/Internal/Config/Types.hs
+index 32da0ac..c5d8eb0 100644
+--- a/src/Language/Haskell/Brittany/Internal/Config/Types.hs
++++ b/src/Language/Haskell/Brittany/Internal/Config/Types.hs
+@@ -229,15 +229,12 @@ deriving instance Data (CForwardOptions Identity)
+ deriving instance Data (CPreProcessorConfig Identity)
+ deriving instance Data (CConfig Identity)
+
+-#if MIN_VERSION_ghc(8,2,0)
+--- these instances break on earlier ghcs
+ deriving instance Data (CDebugConfig Option)
+ deriving instance Data (CLayoutConfig Option)
+ deriving instance Data (CErrorHandlingConfig Option)
+ deriving instance Data (CForwardOptions Option)
+ deriving instance Data (CPreProcessorConfig Option)
+ deriving instance Data (CConfig Option)
+-#endif
+
+ instance Semigroup.Semigroup (CDebugConfig Option) where
+ (<>) = gmappend
+@@ -356,4 +353,3 @@ deriveCZipWith ''CErrorHandlingConfig
+ deriveCZipWith ''CForwardOptions
+ deriveCZipWith ''CPreProcessorConfig
+ deriveCZipWith ''CConfig
+-
+diff --git a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+index 6115f52..7c06f69 100644
+--- a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
++++ b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+@@ -323,7 +323,7 @@ withTransformedAnns ast m = MultiRWSS.mGetRawR >>= \case
+ #if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ warnExtractorCompat :: GHC.Warn -> String
+ warnExtractorCompat (GHC.Warn _ (L _ s)) = s
+-#else /* ghc-8.0 && ghc-8.2 */
++#else /* ghc-8.2 */
+ warnExtractorCompat :: GenLocated l String -> String
+ warnExtractorCompat (L _ s) = s
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+index 4d2b93a..74b6d53 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+@@ -297,7 +297,6 @@ createDerivingPar
+ :: HsDeriving GhcPs -> ToBriDocM BriDocNumbered -> ToBriDocM BriDocNumbered
+ createDerivingPar derivs mainDoc = do
+ case derivs of
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ (L _ []) -> mainDoc
+ (L _ types) ->
+ docPar mainDoc
+@@ -306,26 +305,13 @@ createDerivingPar derivs mainDoc = do
+ $ docWrapNode derivs
+ $ derivingClauseDoc
+ <$> types
+-#else
+- Nothing -> mainDoc
+- Just types ->
+- docPar mainDoc
+- $ docEnsureIndent BrIndentRegular
+- $ derivingClauseDoc types
+-#endif
+
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ derivingClauseDoc :: LHsDerivingClause GhcPs -> ToBriDocM BriDocNumbered
+-#else
+-derivingClauseDoc :: Located [LHsSigType GhcPs] -> ToBriDocM BriDocNumbered
+-#endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ derivingClauseDoc (L _ (XHsDerivingClause ext)) = absurdExt ext
+ derivingClauseDoc (L _ (HsDerivingClause _ext mStrategy types)) = case types of
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+-derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+ #else
+-derivingClauseDoc types = case types of
++derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+ #endif
+ (L _ []) -> docSeq []
+ (L _ ts) ->
+@@ -333,11 +319,7 @@ derivingClauseDoc types = case types of
+ tsLength = length ts
+ whenMoreThan1Type val =
+ if tsLength > 1 then docLitS val else docLitS ""
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ (lhsStrategy, rhsStrategy) = maybe (docEmpty, docEmpty) strategyLeftRight mStrategy
+-#else
+- (lhsStrategy, rhsStrategy) = (docEmpty, docEmpty)
+-#endif
+ in
+ docSeq
+ [ docDeriving
+@@ -351,15 +333,12 @@ derivingClauseDoc types = case types of
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIB _ t -> layoutType t
+ XHsImplicitBndrs x -> absurdExt x
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+- HsIB _ t _ -> layoutType t
+ #else
+- HsIB _ t -> layoutType t
++ HsIB _ t _ -> layoutType t
+ #endif
+ , whenMoreThan1Type ")"
+ , rhsStrategy
+ ]
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.6 */
+ where
+ strategyLeftRight = \case
+ (L _ StockStrategy ) -> (docLitS " stock", docEmpty)
+@@ -377,7 +356,6 @@ derivingClauseDoc types = case types of
+ XHsImplicitBndrs ext -> absurdExt ext
+ )
+ #endif
+-#endif
+
+ docDeriving :: ToBriDocM BriDocNumbered
+ docDeriving = docLitS "deriving"
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+index e512b9a..4a86954 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+@@ -49,9 +49,7 @@ import BasicTypes ( InlinePragma(..)
+ , Activation(..)
+ , InlineSpec(..)
+ , RuleMatchInfo(..)
+-#if MIN_VERSION_ghc(8,2,0)
+ , LexicalFixity(..)
+-#endif
+ )
+ import Language.Haskell.GHC.ExactPrint.Types ( mkAnnKey )
+
+@@ -100,10 +98,8 @@ layoutSig :: ToBriDoc Sig
+ layoutSig lsig@(L _loc sig) = case sig of
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ TypeSig _ names (HsWC _ (HsIB _ typ)) -> layoutNamesAndType Nothing names typ
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ TypeSig names (HsWC _ (HsIB _ typ _)) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.0 */
+- TypeSig names (HsIB _ (HsWC _ _ typ)) -> layoutNamesAndType Nothing names typ
+ #endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ InlineSig _ name (InlinePragma _ spec _arity phaseAct conlike) ->
+@@ -128,17 +124,13 @@ layoutSig lsig@(L _loc sig) = case sig of
+ <> Text.pack " #-}"
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ClassOpSig _ False names (HsIB _ typ) -> layoutNamesAndType Nothing names typ
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ ClassOpSig False names (HsIB _ typ _) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.0 */
+- ClassOpSig False names (HsIB _ typ) -> layoutNamesAndType Nothing names typ
+ #endif
+ #if MIN_VERSION_ghc(8,6,0)
+ PatSynSig _ names (HsIB _ typ) -> layoutNamesAndType (Just "pattern") names typ
+-#elif MIN_VERSION_ghc(8,2,0)
+- PatSynSig names (HsIB _ typ _) -> layoutNamesAndType (Just "pattern") names typ
+ #else
+- PatSynSig name (HsIB _ typ) -> layoutNamesAndType (Just "pattern") [name] typ
++ PatSynSig names (HsIB _ typ _) -> layoutNamesAndType (Just "pattern") names typ
+ #endif
+ _ -> briDocByExactNoComment lsig -- TODO
+ where
+@@ -359,10 +351,8 @@ layoutPatternBind funId binderDoc lmatch@(L _ match) = do
+ Match _ (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+ #elif MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ Match (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.4 */
+- Match (FunRhs matchId _ _) _ _ _ -> Just <$> lrdrNameToTextAnn matchId
+ #else
+- Match (FunBindMatch matchId _) _ _ _ -> Just <$> lrdrNameToTextAnn matchId
++ Match (FunRhs matchId _ _) _ _ _ -> Just <$> lrdrNameToTextAnn matchId
+ #endif
+ _ -> pure Nothing
+ let mIdStr' = fixPatternBindIdentifier match <$> mIdStr
+@@ -406,7 +396,6 @@ layoutPatternBind funId binderDoc lmatch@(L _ match) = do
+ mWhereArg
+ hasComments
+
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 && ghc-8.4 */
+ fixPatternBindIdentifier
+ :: Match GhcPs (LHsExpr GhcPs) -> Text -> Text
+ fixPatternBindIdentifier match idStr = go $ m_ctxt match
+@@ -424,10 +413,6 @@ fixPatternBindIdentifier match idStr = go $ m_ctxt match
+ (ParStmtCtxt ctx1) -> goInner ctx1
+ (TransStmtCtxt ctx1) -> goInner ctx1
+ _ -> idStr
+-#else /* ghc-8.0 */
+-fixPatternBindIdentifier :: Match GhcPs (LHsExpr GhcPs) -> Text -> Text
+-fixPatternBindIdentifier _ x = x
+-#endif
+
+ layoutPatternBindFinal
+ :: Maybe Text
+@@ -842,18 +827,11 @@ layoutTyCl ltycl@(L _loc tycl) = case tycl of
+ let isInfix = case fixity of
+ Prefix -> False
+ Infix -> True
+-#elif MIN_VERSION_ghc(8,2,0)
++#else
+ SynDecl name vars fixity typ _ -> do
+ let isInfix = case fixity of
+ Prefix -> False
+ Infix -> True
+-#else
+- SynDecl name vars typ _ -> do
+- nameStr <- lrdrNameToTextAnn name
+- let isInfixTypeOp = case Text.uncons nameStr of
+- Nothing -> False
+- Just (c, _) -> not (c == '(' || isUpper c)
+- isInfix <- (isInfixTypeOp ||) <$> hasAnnKeyword name AnnBackquote
+ #endif
+ -- hasTrailingParen <- hasAnnKeywordComment ltycl AnnCloseP
+ -- let parenWrapper = if hasTrailingParen
+@@ -864,10 +842,8 @@ layoutTyCl ltycl@(L _loc tycl) = case tycl of
+ $ layoutSynDecl isInfix wrapNodeRest name (hsq_explicit vars) typ
+ #if MIN_VERSION_ghc(8,6,0)
+ DataDecl _ext name tyVars _ dataDefn ->
+-#elif MIN_VERSION_ghc(8,2,0)
+- DataDecl name tyVars _ dataDefn _ _ ->
+ #else
+- DataDecl name tyVars dataDefn _ _ ->
++ DataDecl name tyVars _ dataDefn _ _ ->
+ #endif
+ layoutDataDecl ltycl name tyVars dataDefn
+ _ -> briDocByExactNoComment ltycl
+@@ -919,14 +895,14 @@ layoutTyVarBndr needsSep lbndr@(L _ bndr) = do
+ #if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ XTyVarBndr{} -> error "brittany internal error: XTyVarBndr"
+ UserTyVar _ name -> do
+-#else /* 8.0 8.2 8.4 */
++#else /* 8.2 8.4 */
+ UserTyVar name -> do
+ #endif
+ nameStr <- lrdrNameToTextAnn name
+ docSeq $ [docSeparator | needsSep] ++ [docLit nameStr]
+ #if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ KindedTyVar _ name kind -> do
+-#else /* 8.0 8.2 8.4 */
++#else /* 8.2 8.4 */
+ KindedTyVar name kind -> do
+ #endif
+ nameStr <- lrdrNameToTextAnn name
+@@ -967,12 +943,8 @@ layoutTyFamInstDecl inClass outerNode tfid = do
+ FamEqn name pats _fixity typ = hsib_body $ tfid_eqn tfid
+ bndrsMay = Nothing
+ innerNode = outerNode
+-#elif MIN_VERSION_ghc(8,2,0)
+- innerNode@(L _ (TyFamEqn name boundPats _fixity typ)) = tfid_eqn tfid
+- bndrsMay = Nothing
+- pats = hsib_body boundPats
+ #else
+- innerNode@(L _ (TyFamEqn name boundPats typ)) = tfid_eqn tfid
++ innerNode@(L _ (TyFamEqn name boundPats _fixity typ)) = tfid_eqn tfid
+ bndrsMay = Nothing
+ pats = hsib_body boundPats
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+index d7c9a2b..534496d 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+@@ -62,10 +62,8 @@ layoutExpr lexpr@(L _ expr) = do
+ briDocByExactInlineOnly "HsRecFld" lexpr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsOverLabel _ext _reboundFromLabel name ->
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ HsOverLabel _reboundFromLabel name ->
+-#else /* ghc-8.0 */
+- HsOverLabel name ->
+ #endif
+ let label = FastString.unpackFS name
+ in docLit . Text.pack $ '#' : label
+@@ -176,19 +174,15 @@ layoutExpr lexpr@(L _ expr) = do
+ #endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ (L _ []) _) -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4*/
++#else /* ghc-8.2 */
+ HsLamCase (MG (L _ []) _ _ _) -> do
+-#else /* ghc-8.0 */
+- HsLamCase _ (MG (L _ []) _ _ _) -> do
+ #endif
+ docSetParSpacing $ docAddBaseY BrIndentRegular $
+ (docLit $ Text.pack "\\case {}")
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ lmatches@(L _ matches) _) -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4*/
++#else /* ghc-8.2 */
+ HsLamCase (MG lmatches@(L _ matches) _ _ _) -> do
+-#else /* ghc-8.0 */
+- HsLamCase _ (MG lmatches@(L _ matches) _ _ _) -> do
+ #endif
+ binderDoc <- docLit $ Text.pack "->"
+ funcPatDocs <- docWrapNode lmatches
+@@ -311,10 +305,8 @@ layoutExpr lexpr@(L _ expr) = do
+ HsAppType XHsWildCardBndrs{} _ ->
+ error "brittany internal error: HsAppType XHsWildCardBndrs"
+ HsAppType (HsWC _ ty1) exp1 -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ HsAppType exp1 (HsWC _ ty1) -> do
+-#else /* ghc-8.0 */
+- HsAppType exp1 (HsWC _ _ ty1) -> do
+ #endif
+ t <- docSharedWrapper layoutType ty1
+ e <- docSharedWrapper layoutExpr exp1
+@@ -329,7 +321,7 @@ layoutExpr lexpr@(L _ expr) = do
+ e
+ (docSeq [docLit $ Text.pack "@", t ])
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.0 8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
+ HsAppTypeOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsAppTypeOut{}" lexpr
+@@ -968,7 +960,7 @@ layoutExpr lexpr@(L _ expr) = do
+ in docSetBaseY $ docLines $ [start] ++ linesM ++ [lineN] ++ [end]
+ ExplicitList _ _ [] ->
+ docLit $ Text.pack "[]"
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.0 8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
+ ExplicitPArr{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExplicitPArr{}" lexpr
+@@ -1052,10 +1044,8 @@ layoutExpr lexpr@(L _ expr) = do
+ ExprWithTySig XHsWildCardBndrs{} _ ->
+ error "brittany internal error: ExprWithTySig XHsWildCardBndrs"
+ ExprWithTySig (HsWC _ (HsIB _ typ1)) exp1 -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8,4 */
++#else /* ghc-8.2 */
+ ExprWithTySig exp1 (HsWC _ (HsIB _ typ1 _)) -> do
+-#else /* ghc-8.0 */
+- ExprWithTySig exp1 (HsIB _ (HsWC _ _ typ1)) -> do
+ #endif
+ expDoc <- docSharedWrapper layoutExpr exp1
+ typDoc <- docSharedWrapper layoutType typ1
+@@ -1064,7 +1054,7 @@ layoutExpr lexpr@(L _ expr) = do
+ , appSep $ docLit $ Text.pack "::"
+ , typDoc
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.0 8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
+ ExprWithTySigOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExprWithTySigOut{}" lexpr
+@@ -1113,7 +1103,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ]
+ ArithSeq{} ->
+ briDocByExactInlineOnly "ArithSeq" lexpr
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.0 8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
+ PArrSeq{} -> do
+ -- TODO
+ briDocByExactInlineOnly "PArrSeq{}" lexpr
+@@ -1195,14 +1185,12 @@ layoutExpr lexpr@(L _ expr) = do
+ HsWrap{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsWrap{}" lexpr
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ HsConLikeOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsWrap{}" lexpr
+ ExplicitSum{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExplicitSum{}" lexpr
+-#endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ XExpr{} -> error "brittany internal error: XExpr"
+ #endif
+@@ -1367,7 +1355,7 @@ overLitValBriDoc = \case
+ HsFractional (FL (SourceText t) _ _) -> BDFLit $ Text.pack t
+ HsIsString (SourceText t) _ -> BDFLit $ Text.pack t
+ _ -> error "overLitValBriDoc: literal with no SourceText"
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
++#else /* ghc-8.2 */
+ litBriDoc :: HsLit -> BriDocFInt
+ litBriDoc = \case
+ HsChar (SourceText t) _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+@@ -1391,26 +1379,4 @@ overLitValBriDoc = \case
+ HsFractional (FL t _) -> BDFLit $ Text.pack t
+ HsIsString (SourceText t) _ -> BDFLit $ Text.pack t
+ _ -> error "overLitValBriDoc: literal with no SourceText"
+-#else /* ghc-8.0 */
+-litBriDoc :: HsLit -> BriDocFInt
+-litBriDoc = \case
+- HsChar t _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+- HsCharPrim t _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+- HsString t _fastString -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ FastString.unpackFS fastString
+- HsStringPrim t _byteString -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ Data.ByteString.Char8.unpack byteString
+- HsInt t _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsIntPrim t _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsWordPrim t _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsInt64Prim t _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsWord64Prim t _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsInteger t _i _type -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsRat (FL t _) _type -> BDFLit $ Text.pack t
+- HsFloatPrim (FL t _) -> BDFLit $ Text.pack t
+- HsDoublePrim (FL t _) -> BDFLit $ Text.pack t
+-
+-overLitValBriDoc :: OverLitVal -> BriDocFInt
+-overLitValBriDoc = \case
+- HsIntegral t _ -> BDFLit $ Text.pack t
+- HsFractional (FL t _) -> BDFLit $ Text.pack t
+- HsIsString t _ -> BDFLit $ Text.pack t
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+index 733ac90..606790b 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+@@ -30,7 +30,7 @@ layoutExpr :: ToBriDoc HsExpr
+
+ #if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ litBriDoc :: HsLit GhcPs -> BriDocFInt
+-#else /* ghc-8.0 && ghc-8.2 */
++#else /* ghc-8.2 */
+ litBriDoc :: HsLit -> BriDocFInt
+ #endif
+
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+index bfe2679..739d138 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+@@ -34,13 +34,8 @@ import Language.Haskell.Brittany.Internal.Utils
+
+
+
+-#if MIN_VERSION_ghc(8,2,0)
+ prepareName :: LIEWrappedName name -> Located name
+ prepareName = ieLWrappedName
+-#else
+-prepareName :: Located name -> Located name
+-prepareName = id
+-#endif
+
+ layoutIE :: ToBriDoc IE
+ layoutIE lie@(L _ ie) = docWrapNode lie $ case ie of
+@@ -111,7 +106,6 @@ layoutIE lie@(L _ ie) = docWrapNode lie $ case ie of
+ ]
+ _ -> docEmpty
+ where
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2, 8.4, .. */
+ layoutWrapped _ = \case
+ L _ (IEName n) -> docLit =<< lrdrNameToTextAnn n
+ L _ (IEPattern n) -> do
+@@ -120,16 +114,6 @@ layoutIE lie@(L _ ie) = docWrapNode lie $ case ie of
+ L _ (IEType n) -> do
+ name <- lrdrNameToTextAnn n
+ docLit $ Text.pack "type " <> name
+-#else /* ghc-8.0 */
+- layoutWrapped outer n = do
+- name <- lrdrNameToTextAnn n
+- hasType <- hasAnnKeyword n AnnType
+- hasPattern <- hasAnnKeyword outer AnnPattern
+- docLit $ if
+- | hasType -> Text.pack "type (" <> name <> Text.pack ")"
+- | hasPattern -> Text.pack "pattern " <> name
+- | otherwise -> name
+-#endif
+
+ -- Helper function to deal with Located lists of LIEs.
+ -- In particular this will also associate documentation
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+index d5bf0dd..ac29eda 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+@@ -26,24 +26,14 @@ import Language.Haskell.Brittany.Internal.Utils
+
+
+
+-#if MIN_VERSION_ghc(8,2,0)
+ prepPkg :: SourceText -> String
+ prepPkg rawN = case rawN of
+ SourceText n -> n
+ -- This would be odd to encounter and the
+ -- result will most certainly be wrong
+ NoSourceText -> ""
+-#else
+-prepPkg :: String -> String
+-prepPkg = id
+-#endif
+-#if MIN_VERSION_ghc(8,2,0)
+ prepModName :: Located e -> e
+ prepModName = unLoc
+-#else
+-prepModName :: e -> e
+-prepModName = id
+-#endif
+
+ layoutImport :: ToBriDoc ImportDecl
+ layoutImport limportD@(L _ importD) = docWrapNode limportD $ case importD of
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+index de943b7..b0b13f2 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+@@ -50,14 +50,14 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ -- _ -> expr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ VarPat _ n ->
+-#else /* ghc-8.0 8.2 8.4 */
++#else /* ghc-8.2 8.4 */
+ VarPat n ->
+ #endif
+ fmap Seq.singleton $ docLit $ lrdrNameToText n
+ -- abc -> expr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LitPat _ lit ->
+-#else /* ghc-8.0 8.2 8.4 */
++#else /* ghc-8.2 8.4 */
+ LitPat lit ->
+ #endif
+ fmap Seq.singleton $ allocateNode $ litBriDoc lit
+@@ -66,7 +66,7 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ ParPat _ inner -> do
+ #elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ParPat _ inner -> do
+-#else /* ghc-8.0 8.2 8.4 */
++#else /* ghc-8.2 8.4 */
+ ParPat inner -> do
+ #endif
+ -- (nestedpat) -> expr
+@@ -202,10 +202,8 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ SigPat _ pat1 (HsWC _ (HsIB _ ty1)) -> do
+ #elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ SigPat (HsWC _ (HsIB _ ty1)) pat1 -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ SigPatIn pat1 (HsWC _ (HsIB _ ty1 _)) -> do
+-#else /* ghc-8.0 */
+- SigPatIn pat1 (HsIB _ (HsWC _ _ ty1)) -> do
+ #endif
+ -- i :: Int -> expr
+ patDocs <- layoutPat pat1
+@@ -260,11 +258,6 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ Just{} -> Seq.fromList [negDoc, litDoc]
+ Nothing -> Seq.singleton litDoc
+
+--- if MIN_VERSION_ghc(8,0,0)
+--- VarPat n -> return $ stringLayouter lpat $ lrdrNameToText n
+--- else
+--- VarPat n -> return $ stringLayouter lpat $ rdrNameToText n
+--- endif
+ _ -> return <$> briDocByExactInlineOnly "some unknown pattern" (ghcDL lpat)
+
+ colsWrapPat :: Seq BriDocNumbered -> ToBriDocM BriDocNumbered
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+index 7a1fee4..2060904 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+@@ -42,7 +42,6 @@ import DataTreePrint
+ layoutType :: ToBriDoc HsType
+ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- _ | traceShow (ExactPrint.Types.mkAnnKey ltype) False -> error "impossible"
+-#if MIN_VERSION_ghc(8,2,0)
+ #if MIN_VERSION_ghc(8,6,0)
+ HsTyVar _ promoted name -> do
+ #else /* ghc-8.2 ghc-8.4 */
+@@ -60,11 +59,6 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ , docWrapNode name $ docLit t
+ ]
+ NotPromoted -> docWrapNode name $ docLit t
+-#else /* ghc-8.0 */
+- HsTyVar name -> do
+- t <- lrdrNameToTextAnnTypeEqualityIsSpecial name
+- docWrapNode name $ docLit t
+-#endif
+ #if MIN_VERSION_ghc(8,10,1)
+ HsForAllTy _ _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
+ #elif MIN_VERSION_ghc(8,6,0)
+@@ -547,10 +541,8 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- }
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIParamTy _ (L _ (HsIPName ipName)) typ1 -> do
+-#elif MIN_VERSION_ghc(8,2,0) /* ghc-8.2 8.4 */
++#else /* ghc-8.2 */
+ HsIParamTy (L _ (HsIPName ipName)) typ1 -> do
+-#else /* ghc-8.0 */
+- HsIParamTy (HsIPName ipName) typ1 -> do
+ #endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ docAlt
+@@ -699,11 +691,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ briDocByExactInlineOnly "HsDocTy{}" ltype
+ HsRecTy{} -> -- TODO
+ briDocByExactInlineOnly "HsRecTy{}" ltype
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ HsExplicitListTy _ _ typs -> do
+-#else /* ghc-8.0 */
+- HsExplicitListTy _ typs -> do
+-#endif
+ typDocs <- docSharedWrapper layoutType `mapM` typs
+ hasComments <- hasAnyCommentsBelow ltype
+ let specialCommaSep = appSep $ docLit $ Text.pack " ,"
+@@ -755,27 +743,20 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ #else
+ HsTyLit lit -> case lit of
+ #endif
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ HsNumTy (SourceText srctext) _ -> docLit $ Text.pack srctext
+ HsNumTy NoSourceText _ ->
+ error "overLitValBriDoc: literal with no SourceText"
+ HsStrTy (SourceText srctext) _ -> docLit $ Text.pack srctext
+ HsStrTy NoSourceText _ ->
+ error "overLitValBriDoc: literal with no SourceText"
+-#else /* ghc-8.0 */
+- HsNumTy srctext _ -> docLit $ Text.pack srctext
+- HsStrTy srctext _ -> docLit $ Text.pack srctext
+-#endif
+ #if !MIN_VERSION_ghc(8,6,0)
+ HsCoreTy{} -> -- TODO
+ briDocByExactInlineOnly "HsCoreTy{}" ltype
+ #endif
+ HsWildCardTy _ ->
+ docLit $ Text.pack "_"
+-#if MIN_VERSION_ghc(8,2,0) /* ghc-8.2 */
+ HsSumTy{} -> -- TODO
+ briDocByExactInlineOnly "HsSumTy{}" ltype
+-#endif
+ #if MIN_VERSION_ghc(8,6,0)
+ HsStarTy _ isUnicode -> do
+ if isUnicode
+diff --git a/src/Language/Haskell/Brittany/Internal/Prelude.hs b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+index a0757d8..79e2975 100644
+--- a/src/Language/Haskell/Brittany/Internal/Prelude.hs
++++ b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+@@ -1,4 +1,4 @@
+-#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.0, ghc-8.2 */
++#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.2 */
+ {-# LANGUAGE TypeFamilies #-}
+ #endif
+
+@@ -411,7 +411,7 @@ todo :: a
+ todo = error "todo"
+
+
+-#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.0, ghc-8.2 */
++#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.2 */
+ type family IdP p
+ type instance IdP GhcPs = RdrName
+
+@@ -422,7 +422,7 @@ type GhcPs = RdrName
+ #if MIN_VERSION_ghc(8,8,0)
+ ghcDL :: GHC.HasSrcSpan a => a -> GHC.Located (GHC.SrcSpanLess a)
+ ghcDL = GHC.dL
+-#else /* ghc-8.0 8.2 8.4 8.6 */
++#else /* ghc-8.2 8.4 8.6 */
+ ghcDL :: GHC.Located a -> GHC.Located a
+ ghcDL x = x
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Types.hs b/src/Language/Haskell/Brittany/Internal/Types.hs
+index 620a39b..f402e56 100644
+--- a/src/Language/Haskell/Brittany/Internal/Types.hs
++++ b/src/Language/Haskell/Brittany/Internal/Types.hs
+@@ -32,9 +32,7 @@ data PerItemConfig = PerItemConfig
+ { _icd_perBinding :: Map String (CConfig Option)
+ , _icd_perKey :: Map ExactPrint.Types.AnnKey (CConfig Option)
+ }
+-#if MIN_VERSION_ghc(8,2,0)
+ deriving Data.Data.Data
+-#endif
+
+ type PPM = MultiRWSS.MultiRWS
+ '[Map ExactPrint.AnnKey ExactPrint.Anns, PerItemConfig, Config, ExactPrint.Anns]
+
+From 259c949211448eee97d5cb8e9db97e42e113235f Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Sun, 15 Nov 2020 11:32:34 -0500
+Subject: [PATCH 11/17] Drop support for GHC 8.2
+
+---
+ .github/workflows/ci.yaml | 3 --
+ .travis.yml | 20 ---------
+ Makefile | 7 +--
+ README.md | 2 +-
+ brittany.cabal | 6 +--
+ .../Brittany/Internal/ExactPrintUtils.hs | 5 ---
+ .../Brittany/Internal/Layouters/Decl.hs | 38 +++-------------
+ .../Brittany/Internal/Layouters/Expr.hs | 44 ++++---------------
+ .../Brittany/Internal/Layouters/Expr.hs-boot | 4 --
+ .../Brittany/Internal/Layouters/Pattern.hs | 8 ++--
+ .../Brittany/Internal/Layouters/Type.hs | 6 +--
+ .../Haskell/Brittany/Internal/Prelude.hs | 17 +------
+ .../Haskell/Brittany/Internal/Utils.hs | 2 -
+ stack-8.2.2.yaml | 9 ----
+ stack-8.2.2.yaml.lock | 33 --------------
+ 15 files changed, 28 insertions(+), 176 deletions(-)
+ delete mode 100644 stack-8.2.2.yaml
+ delete mode 100644 stack-8.2.2.yaml.lock
+
+diff --git a/README.md b/README.md
+index b009a37..56f42f0 100644
+--- a/README.md
++++ b/README.md
+@@ -48,7 +48,7 @@ log the size of the input, but _not_ the full input/output of requests.)
+
+ # Other usage notes
+
+-- Supports GHC versions `8.2`, `8.4`, `8.6`, `8.8`.
++- Supports GHC versions `8.4`, `8.6`, `8.8`.
+ - included in stackage with lts>=10.0 (or nightlies dating to >=2017-11-15)
+ - config (file) documentation is lacking.
+ - some config values can not be configured via commandline yet.
+diff --git a/brittany.cabal b/brittany.cabal
+index 0c3ed7c..ffeb0f2 100644
+--- a/brittany.cabal
++++ b/brittany.cabal
+@@ -91,8 +91,8 @@ library {
+ -fno-warn-redundant-constraints
+ }
+ build-depends:
+- { base >=4.10 && <4.15
+- , ghc >=8.2.1 && <8.11
++ { base >=4.11 && <4.15
++ , ghc >=8.4.1 && <8.11
+ , ghc-paths >=0.1.0.9 && <0.2
+ , ghc-exactprint >=0.5.8 && <0.6.4
+ , transformers >=0.5.2.0 && <0.6
+@@ -118,7 +118,7 @@ library {
+ , semigroups >=0.18.2 && <0.20
+ , cmdargs >=0.10.14 && <0.11
+ , czipwith >=1.0.1.0 && <1.1
+- , ghc-boot-th >=8.2.1 && <8.11
++ , ghc-boot-th >=8.4.1 && <8.11
+ , filepath >=1.4.1.0 && <1.5
+ , random >= 1.1 && <1.2
+ }
+diff --git a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+index 7c06f69..b7ac608 100644
+--- a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
++++ b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+@@ -320,10 +320,5 @@ withTransformedAnns ast m = MultiRWSS.mGetRawR >>= \case
+ in annsBalanced
+
+
+-#if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ warnExtractorCompat :: GHC.Warn -> String
+ warnExtractorCompat (GHC.Warn _ (L _ s)) = s
+-#else /* ghc-8.2 */
+-warnExtractorCompat :: GenLocated l String -> String
+-warnExtractorCompat (L _ s) = s
+-#endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+index 4a86954..ae0b232 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+@@ -98,7 +98,7 @@ layoutSig :: ToBriDoc Sig
+ layoutSig lsig@(L _loc sig) = case sig of
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ TypeSig _ names (HsWC _ (HsIB _ typ)) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ TypeSig names (HsWC _ (HsIB _ typ _)) -> layoutNamesAndType Nothing names typ
+ #endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+@@ -124,7 +124,7 @@ layoutSig lsig@(L _loc sig) = case sig of
+ <> Text.pack " #-}"
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ClassOpSig _ False names (HsIB _ typ) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ ClassOpSig False names (HsIB _ typ _) -> layoutNamesAndType Nothing names typ
+ #endif
+ #if MIN_VERSION_ghc(8,6,0)
+@@ -165,19 +165,11 @@ layoutSig lsig@(L _loc sig) = case sig of
+
+ specStringCompat
+ :: MonadMultiWriter [BrittanyError] m => LSig GhcPs -> InlineSpec -> m String
+-#if MIN_VERSION_ghc(8,4,0)
+ specStringCompat ast = \case
+ NoUserInline -> mTell [ErrorUnknownNode "NoUserInline" ast] $> ""
+ Inline -> pure "INLINE "
+ Inlinable -> pure "INLINABLE "
+ NoInline -> pure "NOINLINE "
+-#else
+-specStringCompat _ = \case
+- Inline -> pure "INLINE "
+- Inlinable -> pure "INLINABLE "
+- NoInline -> pure "NOINLINE "
+- EmptyInlineSpec -> pure ""
+-#endif
+
+ layoutGuardLStmt :: ToBriDoc' (Stmt GhcPs (LHsExpr GhcPs))
+ layoutGuardLStmt lgstmt@(L _ stmtLR) = docWrapNode lgstmt $ case stmtLR of
+@@ -349,10 +341,8 @@ layoutPatternBind funId binderDoc lmatch@(L _ match) = do
+ mIdStr <- case match of
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ Match _ (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+-#elif MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+- Match (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+ #else
+- Match (FunRhs matchId _ _) _ _ _ -> Just <$> lrdrNameToTextAnn matchId
++ Match (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+ #endif
+ _ -> pure Nothing
+ let mIdStr' = fixPatternBindIdentifier match <$> mIdStr
+@@ -774,28 +764,16 @@ layoutLPatSyn
+ :: Located (IdP GhcPs)
+ -> HsPatSynDetails (Located (IdP GhcPs))
+ -> ToBriDocM BriDocNumbered
+-#if MIN_VERSION_ghc(8,4,0)
+ layoutLPatSyn name (PrefixCon vars) = do
+-#else
+-layoutLPatSyn name (PrefixPatSyn vars) = do
+-#endif
+ docName <- lrdrNameToTextAnn name
+ names <- mapM lrdrNameToTextAnn vars
+ docSeq . fmap appSep $ docLit docName : (docLit <$> names)
+-#if MIN_VERSION_ghc(8,4,0)
+ layoutLPatSyn name (InfixCon left right) = do
+-#else
+-layoutLPatSyn name (InfixPatSyn left right) = do
+-#endif
+ leftDoc <- lrdrNameToTextAnn left
+ docName <- lrdrNameToTextAnn name
+ rightDoc <- lrdrNameToTextAnn right
+ docSeq . fmap (appSep . docLit) $ [leftDoc, docName, rightDoc]
+-#if MIN_VERSION_ghc(8,4,0)
+ layoutLPatSyn name (RecCon recArgs) = do
+-#else
+-layoutLPatSyn name (RecordPatSyn recArgs) = do
+-#endif
+ docName <- lrdrNameToTextAnn name
+ args <- mapM (lrdrNameToTextAnn . recordPatSynSelectorId) recArgs
+ docSeq . fmap docLit
+@@ -895,14 +873,14 @@ layoutTyVarBndr needsSep lbndr@(L _ bndr) = do
+ #if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ XTyVarBndr{} -> error "brittany internal error: XTyVarBndr"
+ UserTyVar _ name -> do
+-#else /* 8.2 8.4 */
++#else /* 8.4 */
+ UserTyVar name -> do
+ #endif
+ nameStr <- lrdrNameToTextAnn name
+ docSeq $ [docSeparator | needsSep] ++ [docLit nameStr]
+ #if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ KindedTyVar _ name kind -> do
+-#else /* 8.2 8.4 */
++#else /* 8.4 */
+ KindedTyVar name kind -> do
+ #endif
+ nameStr <- lrdrNameToTextAnn name
+@@ -939,14 +917,10 @@ layoutTyFamInstDecl inClass outerNode tfid = do
+ FamEqn _ name pats _fixity typ = hsib_body $ tfid_eqn tfid
+ bndrsMay = Nothing
+ innerNode = outerNode
+-#elif MIN_VERSION_ghc(8,4,0)
++#else
+ FamEqn name pats _fixity typ = hsib_body $ tfid_eqn tfid
+ bndrsMay = Nothing
+ innerNode = outerNode
+-#else
+- innerNode@(L _ (TyFamEqn name boundPats _fixity typ)) = tfid_eqn tfid
+- bndrsMay = Nothing
+- pats = hsib_body boundPats
+ #endif
+ docWrapNodePrior outerNode $ do
+ nameStr <- lrdrNameToTextAnn name
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+index 534496d..8c089c2 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+@@ -62,7 +62,7 @@ layoutExpr lexpr@(L _ expr) = do
+ briDocByExactInlineOnly "HsRecFld" lexpr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsOverLabel _ext _reboundFromLabel name ->
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ HsOverLabel _reboundFromLabel name ->
+ #endif
+ let label = FastString.unpackFS name
+@@ -174,14 +174,14 @@ layoutExpr lexpr@(L _ expr) = do
+ #endif
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ (L _ []) _) -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ HsLamCase (MG (L _ []) _ _ _) -> do
+ #endif
+ docSetParSpacing $ docAddBaseY BrIndentRegular $
+ (docLit $ Text.pack "\\case {}")
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ lmatches@(L _ matches) _) -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ HsLamCase (MG lmatches@(L _ matches) _ _ _) -> do
+ #endif
+ binderDoc <- docLit $ Text.pack "->"
+@@ -305,7 +305,7 @@ layoutExpr lexpr@(L _ expr) = do
+ HsAppType XHsWildCardBndrs{} _ ->
+ error "brittany internal error: HsAppType XHsWildCardBndrs"
+ HsAppType (HsWC _ ty1) exp1 -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ HsAppType exp1 (HsWC _ ty1) -> do
+ #endif
+ t <- docSharedWrapper layoutType ty1
+@@ -321,7 +321,7 @@ layoutExpr lexpr@(L _ expr) = do
+ e
+ (docSeq [docLit $ Text.pack "@", t ])
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+ HsAppTypeOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsAppTypeOut{}" lexpr
+@@ -960,7 +960,7 @@ layoutExpr lexpr@(L _ expr) = do
+ in docSetBaseY $ docLines $ [start] ++ linesM ++ [lineN] ++ [end]
+ ExplicitList _ _ [] ->
+ docLit $ Text.pack "[]"
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+ ExplicitPArr{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExplicitPArr{}" lexpr
+@@ -1044,7 +1044,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ExprWithTySig XHsWildCardBndrs{} _ ->
+ error "brittany internal error: ExprWithTySig XHsWildCardBndrs"
+ ExprWithTySig (HsWC _ (HsIB _ typ1)) exp1 -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ ExprWithTySig exp1 (HsWC _ (HsIB _ typ1 _)) -> do
+ #endif
+ expDoc <- docSharedWrapper layoutExpr exp1
+@@ -1054,7 +1054,7 @@ layoutExpr lexpr@(L _ expr) = do
+ , appSep $ docLit $ Text.pack "::"
+ , typDoc
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+ ExprWithTySigOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExprWithTySigOut{}" lexpr
+@@ -1103,7 +1103,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ]
+ ArithSeq{} ->
+ briDocByExactInlineOnly "ArithSeq" lexpr
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.2 8.4 */
++#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+ PArrSeq{} -> do
+ -- TODO
+ briDocByExactInlineOnly "PArrSeq{}" lexpr
+@@ -1331,7 +1331,6 @@ recordExpression dotdot indentPolicy lexpr nameDoc rFs@(rF1:rFr) = do
+ in [line1] ++ lineR ++ [dotdotLine, lineN]
+ )
+
+-#if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ litBriDoc :: HsLit GhcPs -> BriDocFInt
+ litBriDoc = \case
+ HsChar (SourceText t) _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+@@ -1355,28 +1354,3 @@ overLitValBriDoc = \case
+ HsFractional (FL (SourceText t) _ _) -> BDFLit $ Text.pack t
+ HsIsString (SourceText t) _ -> BDFLit $ Text.pack t
+ _ -> error "overLitValBriDoc: literal with no SourceText"
+-#else /* ghc-8.2 */
+-litBriDoc :: HsLit -> BriDocFInt
+-litBriDoc = \case
+- HsChar (SourceText t) _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+- HsCharPrim (SourceText t) _c -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ ['\'', c, '\'']
+- HsString (SourceText t) _fastString -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ FastString.unpackFS fastString
+- HsStringPrim (SourceText t) _byteString -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ Data.ByteString.Char8.unpack byteString
+- HsInt (SourceText t) _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsIntPrim (SourceText t) _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsWordPrim (SourceText t) _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsInt64Prim (SourceText t) _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsWord64Prim (SourceText t) _i -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsInteger (SourceText t) _i _type -> BDFLit $ Text.pack t -- BDFLit $ Text.pack $ show i
+- HsRat (FL t _) _type -> BDFLit $ Text.pack t
+- HsFloatPrim (FL t _) -> BDFLit $ Text.pack t
+- HsDoublePrim (FL t _) -> BDFLit $ Text.pack t
+- _ -> error "litBriDoc: literal with no SourceText"
+-
+-overLitValBriDoc :: OverLitVal -> BriDocFInt
+-overLitValBriDoc = \case
+- HsIntegral (SourceText t) _ -> BDFLit $ Text.pack t
+- HsFractional (FL t _) -> BDFLit $ Text.pack t
+- HsIsString (SourceText t) _ -> BDFLit $ Text.pack t
+- _ -> error "overLitValBriDoc: literal with no SourceText"
+-#endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+index 606790b..e3be109 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs-boot
+@@ -28,10 +28,6 @@ layoutExpr :: ToBriDoc HsExpr
+
+ -- layoutStmt :: ToBriDoc' (StmtLR GhcPs GhcPs (LHsExpr GhcPs))
+
+-#if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ litBriDoc :: HsLit GhcPs -> BriDocFInt
+-#else /* ghc-8.2 */
+-litBriDoc :: HsLit -> BriDocFInt
+-#endif
+
+ overLitValBriDoc :: OverLitVal -> BriDocFInt
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+index b0b13f2..fb0ba51 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+@@ -50,14 +50,14 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ -- _ -> expr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ VarPat _ n ->
+-#else /* ghc-8.2 8.4 */
++#else /* ghc-8.4 */
+ VarPat n ->
+ #endif
+ fmap Seq.singleton $ docLit $ lrdrNameToText n
+ -- abc -> expr
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LitPat _ lit ->
+-#else /* ghc-8.2 8.4 */
++#else /* ghc-8.4 */
+ LitPat lit ->
+ #endif
+ fmap Seq.singleton $ allocateNode $ litBriDoc lit
+@@ -66,7 +66,7 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ ParPat _ inner -> do
+ #elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ParPat _ inner -> do
+-#else /* ghc-8.2 8.4 */
++#else /* ghc-8.4 */
+ ParPat inner -> do
+ #endif
+ -- (nestedpat) -> expr
+@@ -202,7 +202,7 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ SigPat _ pat1 (HsWC _ (HsIB _ ty1)) -> do
+ #elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ SigPat (HsWC _ (HsIB _ ty1)) pat1 -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ SigPatIn pat1 (HsWC _ (HsIB _ ty1 _)) -> do
+ #endif
+ -- i :: Int -> expr
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+index 2060904..a2b55d7 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+@@ -44,14 +44,14 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- _ | traceShow (ExactPrint.Types.mkAnnKey ltype) False -> error "impossible"
+ #if MIN_VERSION_ghc(8,6,0)
+ HsTyVar _ promoted name -> do
+-#else /* ghc-8.2 ghc-8.4 */
++#else /* ghc-8.4 */
+ HsTyVar promoted name -> do
+ #endif
+ t <- lrdrNameToTextAnnTypeEqualityIsSpecial name
+ case promoted of
+ #if MIN_VERSION_ghc(8,8,0)
+ IsPromoted -> docSeq
+-#else /* ghc-8.2 8.4 8.6 */
++#else /* ghc-8.4 8.6 */
+ Promoted -> docSeq
+ #endif
+ [ docSeparator
+@@ -541,7 +541,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- }
+ #if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIParamTy _ (L _ (HsIPName ipName)) typ1 -> do
+-#else /* ghc-8.2 */
++#else /* ghc-8.4 */
+ HsIParamTy (L _ (HsIPName ipName)) typ1 -> do
+ #endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+diff --git a/src/Language/Haskell/Brittany/Internal/Prelude.hs b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+index 79e2975..e9a6979 100644
+--- a/src/Language/Haskell/Brittany/Internal/Prelude.hs
++++ b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+@@ -1,8 +1,3 @@
+-#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.2 */
+-{-# LANGUAGE TypeFamilies #-}
+-#endif
+-
+-
+ module Language.Haskell.Brittany.Internal.Prelude
+ ( module E
+ , module Language.Haskell.Brittany.Internal.Prelude
+@@ -16,9 +11,7 @@ where
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ import GHC.Hs.Extension as E ( GhcPs )
+ #else
+-# if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ import HsExtension as E ( GhcPs )
+-# endif /* ghc-8.4 */
+ #endif /* ghc-8.10.1 */
+
+ import RdrName as E ( RdrName )
+@@ -411,18 +404,10 @@ todo :: a
+ todo = error "todo"
+
+
+-#if !MIN_VERSION_ghc(8,4,0) /* ghc-8.2 */
+-type family IdP p
+-type instance IdP GhcPs = RdrName
+-
+-type GhcPs = RdrName
+-#endif
+-
+-
+ #if MIN_VERSION_ghc(8,8,0)
+ ghcDL :: GHC.HasSrcSpan a => a -> GHC.Located (GHC.SrcSpanLess a)
+ ghcDL = GHC.dL
+-#else /* ghc-8.2 8.4 8.6 */
++#else /* ghc-8.4 8.6 */
+ ghcDL :: GHC.Located a -> GHC.Located a
+ ghcDL x = x
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Utils.hs b/src/Language/Haskell/Brittany/Internal/Utils.hs
+index 0a0d31f..4b4061e 100644
+--- a/src/Language/Haskell/Brittany/Internal/Utils.hs
++++ b/src/Language/Haskell/Brittany/Internal/Utils.hs
+@@ -62,9 +62,7 @@ import qualified Data.Generics.Uniplate.Direct as Uniplate
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ import qualified GHC.Hs.Extension as HsExtension
+ #else
+-# if MIN_VERSION_ghc(8,4,0) /* ghc-8.4 */
+ import qualified HsExtension
+-# endif /* ghc-8.4 */
+ #endif /* ghc-8.10.1 */
+
+
+
+From e36d9bc465a4b1241812d5137d11b0cec3954548 Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Sun, 15 Nov 2020 11:56:19 -0500
+Subject: [PATCH 12/17] Drop support for GHC 8.4
+
+---
+ .github/workflows/ci.yaml | 3 -
+ .travis.yml | 6 -
+ Makefile | 7 +-
+ README.md | 2 +-
+ brittany.cabal | 6 +-
+ src/Language/Haskell/Brittany/Internal.hs | 18 --
+ .../Brittany/Internal/ExactPrintUtils.hs | 8 -
+ .../Brittany/Internal/Layouters/DataDecl.hs | 46 ----
+ .../Brittany/Internal/Layouters/Decl.hs | 123 +----------
+ .../Brittany/Internal/Layouters/Expr.hs | 197 +-----------------
+ .../Haskell/Brittany/Internal/Layouters/IE.hs | 24 ---
+ .../Brittany/Internal/Layouters/Import.hs | 4 -
+ .../Brittany/Internal/Layouters/Pattern.hs | 48 +----
+ .../Brittany/Internal/Layouters/Stmt.hs | 20 --
+ .../Brittany/Internal/Layouters/Type.hs | 153 +-------------
+ .../Haskell/Brittany/Internal/Prelude.hs | 2 +-
+ .../Haskell/Brittany/Internal/Utils.hs | 5 +-
+ stack-8.4.3.yaml | 4 -
+ stack-8.4.3.yaml.lock | 19 --
+ 19 files changed, 19 insertions(+), 676 deletions(-)
+ delete mode 100644 stack-8.4.3.yaml
+ delete mode 100644 stack-8.4.3.yaml.lock
+
+diff --git a/README.md b/README.md
+index 56f42f0..eec9c4c 100644
+--- a/README.md
++++ b/README.md
+@@ -48,7 +48,7 @@ log the size of the input, but _not_ the full input/output of requests.)
+
+ # Other usage notes
+
+-- Supports GHC versions `8.4`, `8.6`, `8.8`.
++- Supports GHC versions `8.6`, `8.8`.
+ - included in stackage with lts>=10.0 (or nightlies dating to >=2017-11-15)
+ - config (file) documentation is lacking.
+ - some config values can not be configured via commandline yet.
+diff --git a/brittany.cabal b/brittany.cabal
+index ffeb0f2..cd541fb 100644
+--- a/brittany.cabal
++++ b/brittany.cabal
+@@ -91,8 +91,8 @@ library {
+ -fno-warn-redundant-constraints
+ }
+ build-depends:
+- { base >=4.11 && <4.15
+- , ghc >=8.4.1 && <8.11
++ { base >=4.12 && <4.15
++ , ghc >=8.6.1 && <8.11
+ , ghc-paths >=0.1.0.9 && <0.2
+ , ghc-exactprint >=0.5.8 && <0.6.4
+ , transformers >=0.5.2.0 && <0.6
+@@ -118,7 +118,7 @@ library {
+ , semigroups >=0.18.2 && <0.20
+ , cmdargs >=0.10.14 && <0.11
+ , czipwith >=1.0.1.0 && <1.1
+- , ghc-boot-th >=8.4.1 && <8.11
++ , ghc-boot-th >=8.6.1 && <8.11
+ , filepath >=1.4.1.0 && <1.5
+ , random >= 1.1 && <1.2
+ }
+diff --git a/src/Language/Haskell/Brittany/Internal.hs b/src/Language/Haskell/Brittany/Internal.hs
+index 1fc3e12..57e6e8f 100644
+--- a/src/Language/Haskell/Brittany/Internal.hs
++++ b/src/Language/Haskell/Brittany/Internal.hs
+@@ -518,17 +518,10 @@ ppModule lmod@(L _loc _m@(HsModule _name _exports _ decls _ _)) = do
+ _ -> return ()
+
+ getDeclBindingNames :: LHsDecl GhcPs -> [String]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ getDeclBindingNames (L _ decl) = case decl of
+ SigD _ (TypeSig _ ns _) -> ns <&> \(L _ n) -> Text.unpack (rdrNameToText n)
+ ValD _ (FunBind _ (L _ n) _ _ _) -> [Text.unpack $ rdrNameToText n]
+ _ -> []
+-#else
+-getDeclBindingNames (L _ decl) = case decl of
+- SigD (TypeSig ns _) -> ns <&> \(L _ n) -> Text.unpack (rdrNameToText n)
+- ValD (FunBind (L _ n) _ _ _ _) -> [Text.unpack $ rdrNameToText n]
+- _ -> []
+-#endif
+
+
+ -- Prints the information associated with the module annotation
+@@ -586,26 +579,15 @@ ppPreamble lmod@(L loc m@(HsModule _ _ _ _ _ _)) = do
+
+ _sigHead :: Sig GhcPs -> String
+ _sigHead = \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ TypeSig _ names _ ->
+-#else
+- TypeSig names _ ->
+-#endif
+ "TypeSig " ++ intercalate "," (Text.unpack . lrdrNameToText <$> names)
+ _ -> "unknown sig"
+
+ _bindHead :: HsBind GhcPs -> String
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ _bindHead = \case
+ FunBind _ fId _ _ [] -> "FunBind " ++ (Text.unpack $ lrdrNameToText $ fId)
+ PatBind _ _pat _ ([], []) -> "PatBind smth"
+ _ -> "unknown bind"
+-#else
+-_bindHead = \case
+- FunBind fId _ _ _ [] -> "FunBind " ++ (Text.unpack $ lrdrNameToText $ fId)
+- PatBind _pat _ _ _ ([], []) -> "PatBind smth"
+- _ -> "unknown bind"
+-#endif
+
+
+
+diff --git a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+index b7ac608..29c126f 100644
+--- a/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
++++ b/src/Language/Haskell/Brittany/Internal/ExactPrintUtils.hs
+@@ -212,17 +212,9 @@ commentAnnFixTransform modul = SYB.everything (>>) genF modul
+ genF = (\_ -> return ()) `SYB.extQ` exprF
+ exprF :: Located (HsExpr GhcPs) -> ExactPrint.Transform ()
+ exprF lexpr@(L _ expr) = case expr of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ RecordCon _ _ (HsRecFields fs@(_:_) Nothing) ->
+-#else
+- RecordCon _ _ _ (HsRecFields fs@(_:_) Nothing) ->
+-#endif
+ moveTrailingComments lexpr (List.last fs)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ RecordUpd _ _e fs@(_:_) ->
+-#else
+- RecordUpd _e fs@(_:_) _cons _ _ _ ->
+-#endif
+ moveTrailingComments lexpr (List.last fs)
+ _ -> return ()
+
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+index 74b6d53..22f11d4 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/DataDecl.hs
+@@ -44,20 +44,11 @@ layoutDataDecl
+ -> LHsQTyVars GhcPs
+ -> HsDataDefn GhcPs
+ -> ToBriDocM BriDocNumbered
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ layoutDataDecl _ _ (XLHsQTyVars ext) _ = absurdExt ext
+ layoutDataDecl ltycl name (HsQTvs _ bndrs) defn = case defn of
+-#else
+-layoutDataDecl ltycl name (HsQTvs _ bndrs _) defn = case defn of
+-#endif
+ -- newtype MyType a b = MyType ..
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsDataDefn _ext NewType (L _ []) _ctype Nothing [cons] mDerivs -> case cons of
+ (L _ (ConDeclH98 _ext consName (L _ False) _qvars (Just (L _ [])) details _conDoc)) ->
+-#else
+- HsDataDefn NewType (L _ []) _ctype Nothing [cons] mDerivs -> case cons of
+- (L _ (ConDeclH98 consName Nothing (Just (L _ [])) details _conDoc)) ->
+-#endif
+ docWrapNode ltycl $ do
+ nameStr <- lrdrNameToTextAnn name
+ consNameStr <- lrdrNameToTextAnn consName
+@@ -82,11 +73,7 @@ layoutDataDecl ltycl name (HsQTvs _ bndrs _) defn = case defn of
+
+ -- data MyData a b
+ -- (zero constructors)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsDataDefn _ext DataType (L _ lhsContext) _ctype Nothing [] mDerivs ->
+-#else
+- HsDataDefn DataType (L _ lhsContext) _ctype Nothing [] mDerivs ->
+-#endif
+ docWrapNode ltycl $ do
+ lhsContextDoc <- docSharedWrapper createContextDoc lhsContext
+ nameStr <- lrdrNameToTextAnn name
+@@ -100,17 +87,9 @@ layoutDataDecl ltycl name (HsQTvs _ bndrs _) defn = case defn of
+
+ -- data MyData = MyData ..
+ -- data MyData = MyData { .. }
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsDataDefn _ext DataType (L _ lhsContext) _ctype Nothing [cons] mDerivs ->
+-#else
+- HsDataDefn DataType (L _ lhsContext) _ctype Nothing [cons] mDerivs ->
+-#endif
+ case cons of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ (L _ (ConDeclH98 _ext consName (L _ _hasExt) qvars mRhsContext details _conDoc)) ->
+-#else
+- (L _ (ConDeclH98 consName (Just (HsQTvs _ qvars _)) mRhsContext details _conDoc)) ->
+-#endif
+ docWrapNode ltycl $ do
+ lhsContextDoc <- docSharedWrapper createContextDoc lhsContext
+ nameStr <- lrdrNameToTextAnn name
+@@ -266,18 +245,11 @@ createContextDoc (t1 : tR) = do
+ createBndrDoc :: [LHsTyVarBndr GhcPs] -> ToBriDocM BriDocNumbered
+ createBndrDoc bs = do
+ tyVarDocs <- bs `forM` \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ (L _ (UserTyVar _ext vname)) -> return $ (lrdrNameToText vname, Nothing)
+ (L _ (KindedTyVar _ext lrdrName kind)) -> do
+-#else
+- (L _ (UserTyVar vname)) -> return $ (lrdrNameToText vname, Nothing)
+- (L _ (KindedTyVar lrdrName kind)) -> do
+-#endif
+ d <- docSharedWrapper layoutType kind
+ return $ (lrdrNameToText lrdrName, Just $ d)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ (L _ (XTyVarBndr ext)) -> absurdExt ext
+-#endif
+ docSeq
+ $ List.intersperse docSeparator
+ $ tyVarDocs
+@@ -307,12 +279,8 @@ createDerivingPar derivs mainDoc = do
+ <$> types
+
+ derivingClauseDoc :: LHsDerivingClause GhcPs -> ToBriDocM BriDocNumbered
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ derivingClauseDoc (L _ (XHsDerivingClause ext)) = absurdExt ext
+ derivingClauseDoc (L _ (HsDerivingClause _ext mStrategy types)) = case types of
+-#else
+-derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+-#endif
+ (L _ []) -> docSeq []
+ (L _ ts) ->
+ let
+@@ -330,12 +298,8 @@ derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+ $ docSeq
+ $ List.intersperse docCommaSep
+ $ ts <&> \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIB _ t -> layoutType t
+ XHsImplicitBndrs x -> absurdExt x
+-#else
+- HsIB _ t _ -> layoutType t
+-#endif
+ , whenMoreThan1Type ")"
+ , rhsStrategy
+ ]
+@@ -344,7 +308,6 @@ derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+ (L _ StockStrategy ) -> (docLitS " stock", docEmpty)
+ (L _ AnyclassStrategy ) -> (docLitS " anyclass", docEmpty)
+ (L _ NewtypeStrategy ) -> (docLitS " newtype", docEmpty)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ lVia@(L _ (ViaStrategy viaTypes) ) ->
+ ( docEmpty
+ , case viaTypes of
+@@ -355,7 +318,6 @@ derivingClauseDoc (L _ (HsDerivingClause mStrategy types)) = case types of
+ ]
+ XHsImplicitBndrs ext -> absurdExt ext
+ )
+-#endif
+
+ docDeriving :: ToBriDocM BriDocNumbered
+ docDeriving = docLitS "deriving"
+@@ -473,12 +435,8 @@ createDetailsDoc consNameStr details = case details of
+ :: [LConDeclField GhcPs]
+ -> [(ToBriDocM BriDocNumbered, ToBriDocM BriDocNumbered)]
+ mkFieldDocs = fmap $ \lField -> case lField of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ L _ (ConDeclField _ext names t _) -> createNamesAndTypeDoc lField names t
+ L _ (XConDeclField x) -> absurdExt x
+-#else
+- L _ (ConDeclField names t _) -> createNamesAndTypeDoc lField names t
+-#endif
+
+ createForallDoc :: [LHsTyVarBndr GhcPs] -> Maybe (ToBriDocM BriDocNumbered)
+ createForallDoc [] = Nothing
+@@ -497,12 +455,8 @@ createNamesAndTypeDoc lField names t =
+ $ List.intersperse docCommaSep
+ $ names
+ <&> \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ L _ (XFieldOcc x) -> absurdExt x
+ L _ (FieldOcc _ fieldName) ->
+-#else
+- L _ (FieldOcc fieldName _) ->
+-#endif
+ docLit =<< lrdrNameToTextAnn fieldName
+ ]
+ , docWrapNodeRest lField $ layoutType t
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+index ae0b232..f6f59a4 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Decl.hs
+@@ -40,7 +40,7 @@ import qualified FastString
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ import GHC.Hs
+ import GHC.Hs.Extension (NoExtField (..))
+-#elif MIN_VERSION_ghc(8,6,0)
++#else
+ import HsSyn
+ import HsExtension (NoExt (..))
+ #endif
+@@ -65,7 +65,6 @@ import Data.Char (isUpper)
+
+
+ layoutDecl :: ToBriDoc HsDecl
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ layoutDecl d@(L loc decl) = case decl of
+ SigD _ sig -> withTransformedAnns d $ layoutSig (L loc sig)
+ ValD _ bind -> withTransformedAnns d $ layoutBind (L loc bind) >>= \case
+@@ -77,18 +76,6 @@ layoutDecl d@(L loc decl) = case decl of
+ InstD _ (ClsInstD _ inst) ->
+ withTransformedAnns d $ layoutClsInst (L loc inst)
+ _ -> briDocByExactNoComment d
+-#else
+-layoutDecl d@(L loc decl) = case decl of
+- SigD sig -> withTransformedAnns d $ layoutSig (L loc sig)
+- ValD bind -> withTransformedAnns d $ layoutBind (L loc bind) >>= \case
+- Left ns -> docLines $ return <$> ns
+- Right n -> return n
+- TyClD tycl -> withTransformedAnns d $ layoutTyCl (L loc tycl)
+- InstD (TyFamInstD tfid) ->
+- withTransformedAnns d $ layoutTyFamInstDecl False d tfid
+- InstD (ClsInstD inst) -> withTransformedAnns d $ layoutClsInst (L loc inst)
+- _ -> briDocByExactNoComment d
+-#endif
+
+ --------------------------------------------------------------------------------
+ -- Sig
+@@ -96,16 +83,8 @@ layoutDecl d@(L loc decl) = case decl of
+
+ layoutSig :: ToBriDoc Sig
+ layoutSig lsig@(L _loc sig) = case sig of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ TypeSig _ names (HsWC _ (HsIB _ typ)) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.4 */
+- TypeSig names (HsWC _ (HsIB _ typ _)) -> layoutNamesAndType Nothing names typ
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ InlineSig _ name (InlinePragma _ spec _arity phaseAct conlike) ->
+-#else
+- InlineSig name (InlinePragma _ spec _arity phaseAct conlike) ->
+-#endif
+ docWrapNode lsig $ do
+ nameStr <- lrdrNameToTextAnn name
+ specStr <- specStringCompat lsig spec
+@@ -122,16 +101,8 @@ layoutSig lsig@(L _loc sig) = case sig of
+ $ Text.pack ("{-# " ++ specStr ++ conlikeStr ++ phaseStr)
+ <> nameStr
+ <> Text.pack " #-}"
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ClassOpSig _ False names (HsIB _ typ) -> layoutNamesAndType Nothing names typ
+-#else /* ghc-8.4 */
+- ClassOpSig False names (HsIB _ typ _) -> layoutNamesAndType Nothing names typ
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ PatSynSig _ names (HsIB _ typ) -> layoutNamesAndType (Just "pattern") names typ
+-#else
+- PatSynSig names (HsIB _ typ _) -> layoutNamesAndType (Just "pattern") names typ
+-#endif
+ _ -> briDocByExactNoComment lsig -- TODO
+ where
+ layoutNamesAndType mKeyword names typ = docWrapNode lsig $ do
+@@ -173,16 +144,8 @@ specStringCompat ast = \case
+
+ layoutGuardLStmt :: ToBriDoc' (Stmt GhcPs (LHsExpr GhcPs))
+ layoutGuardLStmt lgstmt@(L _ stmtLR) = docWrapNode lgstmt $ case stmtLR of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ BodyStmt _ body _ _ -> layoutExpr body
+-#else
+- BodyStmt body _ _ _ -> layoutExpr body
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ BindStmt _ lPat expr _ _ -> do
+-#else
+- BindStmt lPat expr _ _ _ -> do
+-#endif
+ patDoc <- docSharedWrapper layoutPat lPat
+ expDoc <- docSharedWrapper layoutExpr expr
+ docCols ColBindStmt
+@@ -201,11 +164,7 @@ layoutBind
+ (HsBindLR GhcPs GhcPs)
+ (Either [BriDocNumbered] BriDocNumbered)
+ layoutBind lbind@(L _ bind) = case bind of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ FunBind _ fId (MG _ lmatches@(L _ matches) _) _ [] -> do
+-#else
+- FunBind fId (MG lmatches@(L _ matches) _ _ _) _ _ [] -> do
+-#endif
+ idStr <- lrdrNameToTextAnn fId
+ binderDoc <- docLit $ Text.pack "="
+ funcPatDocs <-
+@@ -214,11 +173,7 @@ layoutBind lbind@(L _ bind) = case bind of
+ $ layoutPatternBind (Just idStr) binderDoc
+ `mapM` matches
+ return $ Left $ funcPatDocs
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ PatBind _ pat (GRHSs _ grhss whereBinds) ([], []) -> do
+-#else
+- PatBind pat (GRHSs grhss whereBinds) _ _ ([], []) -> do
+-#endif
+ patDocs <- colsWrapPat =<< layoutPat pat
+ clauseDocs <- layoutGrhs `mapM` grhss
+ mWhereDocs <- layoutLocalBinds whereBinds
+@@ -233,10 +188,8 @@ layoutBind lbind@(L _ bind) = case bind of
+ hasComments
+ #if MIN_VERSION_ghc(8,8,0)
+ PatSynBind _ (PSB _ patID lpat rpat dir) -> do
+-#elif MIN_VERSION_ghc(8,6,0)
+- PatSynBind _ (PSB _ patID lpat rpat dir) -> do
+ #else
+- PatSynBind (PSB patID _ lpat rpat dir) -> do
++ PatSynBind _ (PSB _ patID lpat rpat dir) -> do
+ #endif
+ fmap Right $ docWrapNode lbind $ layoutPatSynBind patID
+ lpat
+@@ -245,14 +198,9 @@ layoutBind lbind@(L _ bind) = case bind of
+ _ -> Right <$> unknownNodeError "" lbind
+ layoutIPBind :: ToBriDoc IPBind
+ layoutIPBind lipbind@(L _ bind) = case bind of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ XIPBind{} -> unknownNodeError "XIPBind" lipbind
+ IPBind _ (Right _) _ -> error "brittany internal error: IPBind Right"
+ IPBind _ (Left (L _ (HsIPName name))) expr -> do
+-#else
+- IPBind (Right _) _ -> error "brittany internal error: IPBind Right"
+- IPBind (Left (L _ (HsIPName name))) expr -> do
+-#endif
+ ipName <- docLit $ Text.pack $ '?' : FastString.unpackFS name
+ binderDoc <- docLit $ Text.pack "="
+ exprDoc <- layoutExpr expr
+@@ -274,11 +222,7 @@ layoutLocalBinds lbinds@(L _ binds) = case binds of
+ -- Just . (>>= either id return) . Data.Foldable.toList <$> mapBagM layoutBind lhsBindsLR -- TODO: fix ordering
+ -- x@(HsValBinds (ValBindsIn{})) ->
+ -- Just . (:[]) <$> unknownNodeError "HsValBinds (ValBindsIn _ (_:_))" x
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsValBinds _ (ValBinds _ bindlrs sigs) -> do
+-#else
+- HsValBinds (ValBindsIn bindlrs sigs) -> do
+-#endif
+ let unordered =
+ [ BagBind b | b <- Data.Foldable.toList bindlrs ]
+ ++ [ BagSig s | s <- sigs ]
+@@ -287,23 +231,12 @@ layoutLocalBinds lbinds@(L _ binds) = case binds of
+ BagBind b -> either id return <$> layoutBind b
+ BagSig s -> return <$> layoutSig s
+ return $ Just $ docs
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ -- x@(HsValBinds (ValBindsOut _binds _lsigs)) ->
+ HsValBinds _ (XValBindsLR{}) -> error "brittany internal error: XValBindsLR"
+ XHsLocalBindsLR{} -> error "brittany internal error: XHsLocalBindsLR"
+-#else
+- x@(HsValBinds (ValBindsOut _binds _lsigs)) ->
+- -- i _think_ this case never occurs in non-processed ast
+- Just . (: []) <$> unknownNodeError "HsValBinds ValBindsOut{}"
+- (L noSrcSpan x)
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ x@(HsIPBinds _ XHsIPBinds{}) ->
+ Just . (: []) <$> unknownNodeError "XHsIPBinds" (L noSrcSpan x)
+ HsIPBinds _ (IPBinds _ bb) ->
+-#else
+- HsIPBinds (IPBinds bb _) ->
+-#endif
+ Just <$> mapM layoutIPBind bb
+ EmptyLocalBinds{} -> return $ Nothing
+
+@@ -312,17 +245,11 @@ layoutLocalBinds lbinds@(L _ binds) = case binds of
+ layoutGrhs
+ :: LGRHS GhcPs (LHsExpr GhcPs)
+ -> ToBriDocM ([BriDocNumbered], BriDocNumbered, LHsExpr GhcPs)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ layoutGrhs lgrhs@(L _ (GRHS _ guards body)) = do
+-#else
+-layoutGrhs lgrhs@(L _ (GRHS guards body)) = do
+-#endif
+ guardDocs <- docWrapNode lgrhs $ layoutStmt `mapM` guards
+ bodyDoc <- layoutExpr body
+ return (guardDocs, bodyDoc, body)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ layoutGrhs (L _ (XGRHS{})) = error "brittany internal error: XGRHS"
+-#endif
+
+ layoutPatternBind
+ :: Maybe Text
+@@ -331,19 +258,11 @@ layoutPatternBind
+ -> ToBriDocM BriDocNumbered
+ layoutPatternBind funId binderDoc lmatch@(L _ match) = do
+ let pats = m_pats match
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let (GRHSs _ grhss whereBinds) = m_grhss match
+-#else
+- let (GRHSs grhss whereBinds) = m_grhss match
+-#endif
+ patDocs <- pats `forM` \p -> fmap return $ colsWrapPat =<< layoutPat p
+ let isInfix = isInfixMatch match
+ mIdStr <- case match of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ Match _ (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+-#else
+- Match (FunRhs matchId _ _) _ _ -> Just <$> lrdrNameToTextAnn matchId
+-#endif
+ _ -> pure Nothing
+ let mIdStr' = fixPatternBindIdentifier match <$> mIdStr
+ patDoc <- docWrapNodePrior lmatch $ case (mIdStr', patDocs) of
+@@ -785,11 +704,7 @@ layoutLPatSyn name (RecCon recArgs) = do
+ -- pattern synonyms
+ layoutPatSynWhere :: HsPatSynDir GhcPs -> ToBriDocM (Maybe [ToBriDocM BriDocNumbered])
+ layoutPatSynWhere hs = case hs of
+-#if MIN_VERSION_ghc(8,6,0)
+ ExplicitBidirectional (MG _ (L _ lbinds) _) -> do
+-#else
+- ExplicitBidirectional (MG (L _ lbinds) _ _ _) -> do
+-#endif
+ binderDoc <- docLit $ Text.pack "="
+ Just <$> mapM (docSharedWrapper $ layoutPatternBind Nothing binderDoc) lbinds
+ _ -> pure Nothing
+@@ -800,17 +715,10 @@ layoutPatSynWhere hs = case hs of
+
+ layoutTyCl :: ToBriDoc TyClDecl
+ layoutTyCl ltycl@(L _loc tycl) = case tycl of
+-#if MIN_VERSION_ghc(8,6,0)
+ SynDecl _ name vars fixity typ -> do
+ let isInfix = case fixity of
+ Prefix -> False
+ Infix -> True
+-#else
+- SynDecl name vars fixity typ _ -> do
+- let isInfix = case fixity of
+- Prefix -> False
+- Infix -> True
+-#endif
+ -- hasTrailingParen <- hasAnnKeywordComment ltycl AnnCloseP
+ -- let parenWrapper = if hasTrailingParen
+ -- then appSep . docWrapNodeRest ltycl
+@@ -818,11 +726,7 @@ layoutTyCl ltycl@(L _loc tycl) = case tycl of
+ let wrapNodeRest = docWrapNodeRest ltycl
+ docWrapNodePrior ltycl
+ $ layoutSynDecl isInfix wrapNodeRest name (hsq_explicit vars) typ
+-#if MIN_VERSION_ghc(8,6,0)
+ DataDecl _ext name tyVars _ dataDefn ->
+-#else
+- DataDecl name tyVars _ dataDefn _ _ ->
+-#endif
+ layoutDataDecl ltycl name tyVars dataDefn
+ _ -> briDocByExactNoComment ltycl
+
+@@ -870,19 +774,11 @@ layoutSynDecl isInfix wrapNodeRest name vars typ = do
+ layoutTyVarBndr :: Bool -> ToBriDoc HsTyVarBndr
+ layoutTyVarBndr needsSep lbndr@(L _ bndr) = do
+ docWrapNodePrior lbndr $ case bndr of
+-#if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ XTyVarBndr{} -> error "brittany internal error: XTyVarBndr"
+ UserTyVar _ name -> do
+-#else /* 8.4 */
+- UserTyVar name -> do
+-#endif
+ nameStr <- lrdrNameToTextAnn name
+ docSeq $ [docSeparator | needsSep] ++ [docLit nameStr]
+-#if MIN_VERSION_ghc(8,6,0) /* 8.6 */
+ KindedTyVar _ name kind -> do
+-#else /* 8.4 */
+- KindedTyVar name kind -> do
+-#endif
+ nameStr <- lrdrNameToTextAnn name
+ docSeq
+ $ [ docSeparator | needsSep ]
+@@ -913,12 +809,8 @@ layoutTyFamInstDecl inClass outerNode tfid = do
+ -- bndrsMay isJust e.g. with
+ -- type instance forall a . MyType (Maybe a) = Either () a
+ innerNode = outerNode
+-#elif MIN_VERSION_ghc(8,6,0)
+- FamEqn _ name pats _fixity typ = hsib_body $ tfid_eqn tfid
+- bndrsMay = Nothing
+- innerNode = outerNode
+ #else
+- FamEqn name pats _fixity typ = hsib_body $ tfid_eqn tfid
++ FamEqn _ name pats _fixity typ = hsib_body $ tfid_eqn tfid
+ bndrsMay = Nothing
+ innerNode = outerNode
+ #endif
+@@ -996,20 +888,13 @@ layoutClsInst lcid@(L _ cid) = docLines
+ . ClsInstD NoExtField
+ . removeChildren
+ <$> lcid
+-#elif MIN_VERSION_ghc(8,6,0) /* 8.6 */
++#else
+ layoutInstanceHead =
+ briDocByExactNoComment
+ $ InstD NoExt
+ . ClsInstD NoExt
+ . removeChildren
+ <$> lcid
+-#else
+- layoutInstanceHead =
+- briDocByExactNoComment
+- $ InstD
+- . ClsInstD
+- . removeChildren
+- <$> lcid
+ #endif
+
+ removeChildren :: ClsInstDecl p -> ClsInstDecl p
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+index 8c089c2..ae514f1 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs
+@@ -44,65 +44,29 @@ layoutExpr lexpr@(L _ expr) = do
+ .> confUnpack
+ let allowFreeIndent = indentPolicy == IndentPolicyFree
+ docWrapNode lexpr $ case expr of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsVar _ vname -> do
+-#else
+- HsVar vname -> do
+-#endif
+ docLit =<< lrdrNameToTextAnn vname
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsUnboundVar _ var -> case var of
+-#else
+- HsUnboundVar var -> case var of
+-#endif
+ OutOfScope oname _ -> docLit $ Text.pack $ occNameString oname
+ TrueExprHole oname -> docLit $ Text.pack $ occNameString oname
+ HsRecFld{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsRecFld" lexpr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsOverLabel _ext _reboundFromLabel name ->
+-#else /* ghc-8.4 */
+- HsOverLabel _reboundFromLabel name ->
+-#endif
+ let label = FastString.unpackFS name
+ in docLit . Text.pack $ '#' : label
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIPVar _ext (HsIPName name) ->
+-#else
+- HsIPVar (HsIPName name) ->
+-#endif
+ let label = FastString.unpackFS name
+ in docLit . Text.pack $ '?' : label
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsOverLit _ olit -> do
+-#else
+- HsOverLit olit -> do
+-#endif
+ allocateNode $ overLitValBriDoc $ ol_val olit
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLit _ lit -> do
+-#else
+- HsLit lit -> do
+-#endif
+ allocateNode $ litBriDoc lit
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLam _ (MG _ (L _ [lmatch@(L _ match)]) _)
+-#else
+- HsLam (MG (L _ [lmatch@(L _ match)]) _ _ _)
+-#endif
+ | pats <- m_pats match
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ , GRHSs _ [lgrhs] llocals <- m_grhss match
+-#else
+- , GRHSs [lgrhs] llocals <- m_grhss match
+-#endif
+ , L _ EmptyLocalBinds {} <- llocals
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ , L _ (GRHS _ [] body) <- lgrhs
+-#else
+- , L _ (GRHS [] body) <- lgrhs
+-#endif
+ -> do
+ patDocs <- zip (True : repeat False) pats `forM` \(isFirst, p) ->
+ fmap return $ do
+@@ -168,48 +132,26 @@ layoutExpr lexpr@(L _ expr) = do
+ ]
+ HsLam{} ->
+ unknownNodeError "HsLam too complex" lexpr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ XMatchGroup{} ->
+ error "brittany internal error: HsLamCase XMatchGroup"
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ (L _ []) _) -> do
+-#else /* ghc-8.4 */
+- HsLamCase (MG (L _ []) _ _ _) -> do
+-#endif
+ docSetParSpacing $ docAddBaseY BrIndentRegular $
+ (docLit $ Text.pack "\\case {}")
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLamCase _ (MG _ lmatches@(L _ matches) _) -> do
+-#else /* ghc-8.4 */
+- HsLamCase (MG lmatches@(L _ matches) _ _ _) -> do
+-#endif
+ binderDoc <- docLit $ Text.pack "->"
+ funcPatDocs <- docWrapNode lmatches
+ $ layoutPatternBind Nothing binderDoc `mapM` matches
+ docSetParSpacing $ docAddBaseY BrIndentRegular $ docPar
+ (docLit $ Text.pack "\\case")
+ (docSetBaseAndIndent $ docNonBottomSpacing $ docLines $ return <$> funcPatDocs)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsApp _ exp1@(L _ HsApp{}) exp2 -> do
+-#else
+- HsApp exp1@(L _ HsApp{}) exp2 -> do
+-#endif
+ let gather :: [LHsExpr GhcPs] -> LHsExpr GhcPs -> (LHsExpr GhcPs, [LHsExpr GhcPs])
+ gather list = \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ L _ (HsApp _ l r) -> gather (r:list) l
+-#else
+- L _ (HsApp l r) -> gather (r:list) l
+-#endif
+ x -> (x, list)
+ let (headE, paramEs) = gather [exp2] exp1
+ let colsOrSequence = case headE of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ L _ (HsVar _ (L _ (Unqual occname))) ->
+-#else
+- L _ (HsVar (L _ (Unqual occname))) ->
+-#endif
+ docCols (ColApp $ Text.pack $ occNameString occname)
+ _ -> docSeq
+ headDoc <- docSharedWrapper layoutExpr headE
+@@ -255,11 +197,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ( docNonBottomSpacing
+ $ docLines paramDocs
+ )
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsApp _ exp1 exp2 -> do
+-#else
+- HsApp exp1 exp2 -> do
+-#endif
+ -- TODO: if expDoc1 is some literal, we may want to create a docCols here.
+ expDoc1 <- docSharedWrapper layoutExpr exp1
+ expDoc2 <- docSharedWrapper layoutExpr exp2
+@@ -301,12 +239,10 @@ layoutExpr lexpr@(L _ expr) = do
+ HsAppType _ _ XHsWildCardBndrs{} ->
+ error "brittany internal error: HsAppType XHsWildCardBndrs"
+ HsAppType _ exp1 (HsWC _ ty1) -> do
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ HsAppType XHsWildCardBndrs{} _ ->
+ error "brittany internal error: HsAppType XHsWildCardBndrs"
+ HsAppType (HsWC _ ty1) exp1 -> do
+-#else /* ghc-8.4 */
+- HsAppType exp1 (HsWC _ ty1) -> do
+ #endif
+ t <- docSharedWrapper layoutType ty1
+ e <- docSharedWrapper layoutExpr exp1
+@@ -321,23 +257,10 @@ layoutExpr lexpr@(L _ expr) = do
+ e
+ (docSeq [docLit $ Text.pack "@", t ])
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+- HsAppTypeOut{} -> do
+- -- TODO
+- briDocByExactInlineOnly "HsAppTypeOut{}" lexpr
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ OpApp _ expLeft@(L _ OpApp{}) expOp expRight -> do
+-#else
+- OpApp expLeft@(L _ OpApp{}) expOp _ expRight -> do
+-#endif
+ let gather :: [(LHsExpr GhcPs, LHsExpr GhcPs)] -> LHsExpr GhcPs -> (LHsExpr GhcPs, [(LHsExpr GhcPs, LHsExpr GhcPs)])
+ gather opExprList = \case
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ (L _ (OpApp _ l1 op1 r1)) -> gather ((op1, r1): opExprList) l1
+-#else
+- (L _ (OpApp l1 op1 _ r1)) -> gather ((op1, r1): opExprList) l1
+-#endif
+ final -> (final, opExprList)
+ (leftOperand, appList) = gather [] expLeft
+ leftOperandDoc <- docSharedWrapper layoutExpr leftOperand
+@@ -351,19 +274,11 @@ layoutExpr lexpr@(L _ expr) = do
+ hasComLeft <- hasAnyCommentsConnected expLeft
+ hasComOp <- hasAnyCommentsConnected expOp
+ pure $ not hasComLeft && not hasComOp
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let allowPar = case (expOp, expRight) of
+ (L _ (HsVar _ (L _ (Unqual occname))), _)
+ | occNameString occname == "$" -> True
+ (_, L _ (HsApp _ _ (L _ HsVar{}))) -> False
+ _ -> True
+-#else
+- let allowPar = case (expOp, expRight) of
+- (L _ (HsVar (L _ (Unqual occname))), _)
+- | occNameString occname == "$" -> True
+- (_, L _ (HsApp _ (L _ HsVar{}))) -> False
+- _ -> True
+-#endif
+ runFilteredAlternative $ do
+ -- > one + two + three
+ -- or
+@@ -401,27 +316,15 @@ layoutExpr lexpr@(L _ expr) = do
+ $ (appListDocs <&> \(od, ed) -> docCols ColOpPrefix [appSep od, docSetBaseY ed])
+ ++ [docCols ColOpPrefix [appSep opLastDoc, docSetBaseY expLastDoc]]
+ )
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ OpApp _ expLeft expOp expRight -> do
+-#else
+- OpApp expLeft expOp _ expRight -> do
+-#endif
+ expDocLeft <- docSharedWrapper layoutExpr expLeft
+ expDocOp <- docSharedWrapper layoutExpr expOp
+ expDocRight <- docSharedWrapper layoutExpr expRight
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let allowPar = case (expOp, expRight) of
+ (L _ (HsVar _ (L _ (Unqual occname))), _)
+ | occNameString occname == "$" -> True
+ (_, L _ (HsApp _ _ (L _ HsVar{}))) -> False
+ _ -> True
+-#else
+- let allowPar = case (expOp, expRight) of
+- (L _ (HsVar (L _ (Unqual occname))), _)
+- | occNameString occname == "$" -> True
+- (_, L _ (HsApp _ (L _ HsVar{}))) -> False
+- _ -> True
+-#endif
+ let leftIsDoBlock = case expLeft of
+ L _ HsDo{} -> True
+ _ -> False
+@@ -467,20 +370,12 @@ layoutExpr lexpr@(L _ expr) = do
+ then docLines [expDocLeft, expDocOpAndRight]
+ else docAddBaseY BrIndentRegular
+ $ docPar expDocLeft expDocOpAndRight
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ NegApp _ op _ -> do
+-#else
+- NegApp op _ -> do
+-#endif
+ opDoc <- docSharedWrapper layoutExpr op
+ docSeq [ docLit $ Text.pack "-"
+ , opDoc
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsPar _ innerExp -> do
+-#else
+- HsPar innerExp -> do
+-#endif
+ innerExpDoc <- docSharedWrapper (docWrapNode lexpr . layoutExpr) innerExp
+ docAlt
+ [ docSeq
+@@ -496,41 +391,25 @@ layoutExpr lexpr@(L _ expr) = do
+ , docLit $ Text.pack ")"
+ ]
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ SectionL _ left op -> do -- TODO: add to testsuite
+-#else
+- SectionL left op -> do -- TODO: add to testsuite
+-#endif
+ leftDoc <- docSharedWrapper layoutExpr left
+ opDoc <- docSharedWrapper layoutExpr op
+ docSeq [leftDoc, docSeparator, opDoc]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ SectionR _ op right -> do -- TODO: add to testsuite
+-#else
+- SectionR op right -> do -- TODO: add to testsuite
+-#endif
+ opDoc <- docSharedWrapper layoutExpr op
+ rightDoc <- docSharedWrapper layoutExpr right
+ docSeq [opDoc, docSeparator, rightDoc]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ExplicitTuple _ args boxity -> do
+-#else
+- ExplicitTuple args boxity -> do
+-#endif
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ let argExprs = args <&> \arg -> case arg of
+ (L _ (Present _ e)) -> (arg, Just e);
+ (L _ (Missing NoExtField)) -> (arg, Nothing)
+ (L _ XTupArg{}) -> error "brittany internal error: XTupArg"
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ let argExprs = args <&> \arg -> case arg of
+ (L _ (Present _ e)) -> (arg, Just e);
+ (L _ (Missing NoExt)) -> (arg, Nothing)
+ (L _ XTupArg{}) -> error "brittany internal error: XTupArg"
+-#else
+- let argExprs = args <&> \arg -> case arg of
+- (L _ (Present e)) -> (arg, Just e);
+- (L _ (Missing PlaceHolder)) -> (arg, Nothing)
+ #endif
+ argDocs <- forM argExprs
+ $ docSharedWrapper
+@@ -576,15 +455,9 @@ layoutExpr lexpr@(L _ expr) = do
+ lineN = docCols ColTuples [docCommaSep, docNodeAnnKW lexpr (Just AnnOpenP) eN]
+ end = closeLit
+ in docSetBaseY $ docLines $ [start] ++ linesM ++ [lineN, end]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsCase _ _ XMatchGroup{} ->
+ error "brittany internal error: HsCase XMatchGroup"
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsCase _ cExp (MG _ (L _ []) _) -> do
+-#else
+- HsCase cExp (MG (L _ []) _ _ _) -> do
+-#endif
+ cExpDoc <- docSharedWrapper layoutExpr cExp
+ docAlt
+ [ docAddBaseY BrIndentRegular
+@@ -599,11 +472,7 @@ layoutExpr lexpr@(L _ expr) = do
+ )
+ (docLit $ Text.pack "of {}")
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsCase _ cExp (MG _ lmatches@(L _ matches) _) -> do
+-#else
+- HsCase cExp (MG lmatches@(L _ matches) _ _ _) -> do
+-#endif
+ cExpDoc <- docSharedWrapper layoutExpr cExp
+ binderDoc <- docLit $ Text.pack "->"
+ funcPatDocs <- docWrapNode lmatches
+@@ -627,11 +496,7 @@ layoutExpr lexpr@(L _ expr) = do
+ (docSetBaseAndIndent $ docNonBottomSpacing $ docLines $ return <$> funcPatDocs)
+ )
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIf _ _ ifExpr thenExpr elseExpr -> do
+-#else
+- HsIf _ ifExpr thenExpr elseExpr -> do
+-#endif
+ ifExprDoc <- docSharedWrapper layoutExpr ifExpr
+ thenExprDoc <- docSharedWrapper layoutExpr thenExpr
+ elseExprDoc <- docSharedWrapper layoutExpr elseExpr
+@@ -751,11 +616,7 @@ layoutExpr lexpr@(L _ expr) = do
+ docSetParSpacing $ docAddBaseY BrIndentRegular $ docPar
+ (docLit $ Text.pack "if")
+ (layoutPatternBindFinal Nothing binderDoc Nothing clauseDocs Nothing hasComments)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsLet _ binds exp1 -> do
+-#else
+- HsLet binds exp1 -> do
+-#endif
+ expDoc1 <- docSharedWrapper layoutExpr exp1
+ -- We jump through some ugly hoops here to ensure proper sharing.
+ hasComments <- hasAnyCommentsBelow lexpr
+@@ -861,11 +722,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ]
+ _ -> docSeq [appSep $ docLit $ Text.pack "let in", expDoc1]
+ -- docSeq [appSep $ docLit "let in", expDoc1]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsDo _ stmtCtx (L _ stmts) -> case stmtCtx of
+-#else
+- HsDo stmtCtx (L _ stmts) _ -> case stmtCtx of
+-#endif
+ DoExpr -> do
+ stmtDocs <- docSharedWrapper layoutStmt `mapM` stmts
+ docSetParSpacing
+@@ -960,26 +817,13 @@ layoutExpr lexpr@(L _ expr) = do
+ in docSetBaseY $ docLines $ [start] ++ linesM ++ [lineN] ++ [end]
+ ExplicitList _ _ [] ->
+ docLit $ Text.pack "[]"
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+- ExplicitPArr{} -> do
+- -- TODO
+- briDocByExactInlineOnly "ExplicitPArr{}" lexpr
+-#endif
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ RecordCon _ lname fields ->
+-#else
+- RecordCon lname _ _ fields ->
+-#endif
+ case fields of
+ HsRecFields fs Nothing -> do
+ let nameDoc = docWrapNode lname $ docLit $ lrdrNameToText lname
+ rFs <- fs
+ `forM` \lfield@(L _ (HsRecField (L _ fieldOcc) rFExpr pun)) -> do
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let FieldOcc _ lnameF = fieldOcc
+-#else
+- let FieldOcc lnameF _ = fieldOcc
+-#endif
+ rFExpDoc <- if pun
+ then return Nothing
+ else Just <$> docSharedWrapper layoutExpr rFExpr
+@@ -999,22 +843,14 @@ layoutExpr lexpr@(L _ expr) = do
+ #endif
+ let nameDoc = docWrapNode lname $ docLit $ lrdrNameToText lname
+ fieldDocs <- fs `forM` \fieldl@(L _ (HsRecField (L _ fieldOcc) fExpr pun)) -> do
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let FieldOcc _ lnameF = fieldOcc
+-#else
+- let FieldOcc lnameF _ = fieldOcc
+-#endif
+ fExpDoc <- if pun
+ then return Nothing
+ else Just <$> docSharedWrapper layoutExpr fExpr
+ return (fieldl, lrdrNameToText lnameF, fExpDoc)
+ recordExpression True indentPolicy lexpr nameDoc fieldDocs
+ _ -> unknownNodeError "RecordCon with puns" lexpr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ RecordUpd _ rExpr fields -> do
+-#else
+- RecordUpd rExpr fields _ _ _ _ -> do
+-#endif
+ rExprDoc <- docSharedWrapper layoutExpr rExpr
+ rFs <- fields
+ `forM` \lfield@(L _ (HsRecField (L _ ambName) rFExpr pun)) -> do
+@@ -1022,15 +858,10 @@ layoutExpr lexpr@(L _ expr) = do
+ then return Nothing
+ else Just <$> docSharedWrapper layoutExpr rFExpr
+ return $ case ambName of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ Unambiguous _ n -> (lfield, lrdrNameToText n, rFExpDoc)
+ Ambiguous _ n -> (lfield, lrdrNameToText n, rFExpDoc)
+ XAmbiguousFieldOcc{} ->
+ error "brittany internal error: XAmbiguousFieldOcc"
+-#else
+- Unambiguous n _ -> (lfield, lrdrNameToText n, rFExpDoc)
+- Ambiguous n _ -> (lfield, lrdrNameToText n, rFExpDoc)
+-#endif
+ recordExpression False indentPolicy lexpr rExprDoc rFs
+ #if MIN_VERSION_ghc(8,8,0) /* ghc-8.6 */
+ ExprWithTySig _ _ (HsWC _ XHsImplicitBndrs{}) ->
+@@ -1038,14 +869,12 @@ layoutExpr lexpr@(L _ expr) = do
+ ExprWithTySig _ _ XHsWildCardBndrs{} ->
+ error "brittany internal error: ExprWithTySig XHsWildCardBndrs"
+ ExprWithTySig _ exp1 (HsWC _ (HsIB _ typ1)) -> do
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ ExprWithTySig (HsWC _ XHsImplicitBndrs{}) _ ->
+ error "brittany internal error: ExprWithTySig HsWC XHsImplicitBndrs"
+ ExprWithTySig XHsWildCardBndrs{} _ ->
+ error "brittany internal error: ExprWithTySig XHsWildCardBndrs"
+ ExprWithTySig (HsWC _ (HsIB _ typ1)) exp1 -> do
+-#else /* ghc-8.4 */
+- ExprWithTySig exp1 (HsWC _ (HsIB _ typ1 _)) -> do
+ #endif
+ expDoc <- docSharedWrapper layoutExpr exp1
+ typDoc <- docSharedWrapper layoutType typ1
+@@ -1054,11 +883,6 @@ layoutExpr lexpr@(L _ expr) = do
+ , appSep $ docLit $ Text.pack "::"
+ , typDoc
+ ]
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+- ExprWithTySigOut{} -> do
+- -- TODO
+- briDocByExactInlineOnly "ExprWithTySigOut{}" lexpr
+-#endif
+ ArithSeq _ Nothing info ->
+ case info of
+ From e1 -> do
+@@ -1103,11 +927,6 @@ layoutExpr lexpr@(L _ expr) = do
+ ]
+ ArithSeq{} ->
+ briDocByExactInlineOnly "ArithSeq" lexpr
+-#if !MIN_VERSION_ghc(8,6,0) /* ghc-8.4 */
+- PArrSeq{} -> do
+- -- TODO
+- briDocByExactInlineOnly "PArrSeq{}" lexpr
+-#endif
+ HsSCC{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsSCC{}" lexpr
+@@ -1123,11 +942,7 @@ layoutExpr lexpr@(L _ expr) = do
+ HsTcBracketOut{} -> do
+ -- TODO
+ briDocByExactInlineOnly "HsTcBracketOut{}" lexpr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsSpliceE _ (HsQuasiQuote _ _ quoter _loc content) -> do
+-#else
+- HsSpliceE (HsQuasiQuote _ quoter _loc content) -> do
+-#endif
+ allocateNode $ BDFPlain
+ (Text.pack
+ $ "["
+@@ -1166,11 +981,7 @@ layoutExpr lexpr@(L _ expr) = do
+ #else
+ EWildPat{} -> do
+ docLit $ Text.pack "_"
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ EAsPat _ asName asExpr -> do
+-#else
+- EAsPat asName asExpr -> do
+-#endif
+ docSeq
+ [ docLit $ lrdrNameToText asName <> Text.pack "@"
+ , layoutExpr asExpr
+@@ -1191,9 +1002,7 @@ layoutExpr lexpr@(L _ expr) = do
+ ExplicitSum{} -> do
+ -- TODO
+ briDocByExactInlineOnly "ExplicitSum{}" lexpr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ XExpr{} -> error "brittany internal error: XExpr"
+-#endif
+
+ recordExpression
+ :: (Data.Data.Data lExpr, Data.Data.Data name)
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+index 739d138..4f7ec0e 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/IE.hs
+@@ -39,32 +39,12 @@ prepareName = ieLWrappedName
+
+ layoutIE :: ToBriDoc IE
+ layoutIE lie@(L _ ie) = docWrapNode lie $ case ie of
+-#if MIN_VERSION_ghc(8,6,0)
+ IEVar _ x -> layoutWrapped lie x
+-#else
+- IEVar x -> layoutWrapped lie x
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ IEThingAbs _ x -> layoutWrapped lie x
+-#else
+- IEThingAbs x -> layoutWrapped lie x
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ IEThingAll _ x -> docSeq [layoutWrapped lie x, docLit $ Text.pack "(..)"]
+-#else
+- IEThingAll x -> docSeq [layoutWrapped lie x, docLit $ Text.pack "(..)"]
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ IEThingWith _ x (IEWildcard _) _ _ ->
+-#else
+- IEThingWith x (IEWildcard _) _ _ ->
+-#endif
+ docSeq [layoutWrapped lie x, docLit $ Text.pack "(..)"]
+-#if MIN_VERSION_ghc(8,6,0)
+ IEThingWith _ x _ ns _ -> do
+-#else
+- IEThingWith x _ ns _ -> do
+-#endif
+ hasComments <- orM
+ ( hasCommentsBetween lie AnnOpenP AnnCloseP
+ : hasAnyCommentsBelow x
+@@ -95,11 +75,7 @@ layoutIE lie@(L _ ie) = docWrapNode lie $ case ie of
+ $ [docSeq [docParenLSep, docWrapNode n1 $ nameDoc n1]]
+ ++ map layoutItem nMs
+ ++ [docSeq [docCommaSep, docNodeAnnKW lie (Just AnnOpenP) $ nameDoc nN], docParenR]
+-#if MIN_VERSION_ghc(8,6,0)
+ IEModuleContents _ n -> docSeq
+-#else
+- IEModuleContents n -> docSeq
+-#endif
+ [ docLit $ Text.pack "module"
+ , docSeparator
+ , docLit . Text.pack . moduleNameString $ unLoc n
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+index ac29eda..cdcd8ed 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Import.hs
+@@ -37,11 +37,7 @@ prepModName = unLoc
+
+ layoutImport :: ToBriDoc ImportDecl
+ layoutImport limportD@(L _ importD) = docWrapNode limportD $ case importD of
+-#if MIN_VERSION_ghc(8,6,0)
+ ImportDecl _ _ (L _ modName) pkg src safe q False mas mllies -> do
+-#else
+- ImportDecl _ (L _ modName) pkg src safe q False mas mllies -> do
+-#endif
+ importCol <- mAsk <&> _conf_layout .> _lconfig_importColumn .> confUnpack
+ importAsCol <- mAsk <&> _conf_layout .> _lconfig_importAsColumn .> confUnpack
+ indentPolicy <- mAsk <&> _conf_layout .> _lconfig_indentPolicy .> confUnpack
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+index fb0ba51..037d693 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Pattern.hs
+@@ -48,26 +48,16 @@ layoutPat :: LPat GhcPs -> ToBriDocM (Seq BriDocNumbered)
+ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ WildPat _ -> fmap Seq.singleton $ docLit $ Text.pack "_"
+ -- _ -> expr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ VarPat _ n ->
+-#else /* ghc-8.4 */
+- VarPat n ->
+-#endif
+ fmap Seq.singleton $ docLit $ lrdrNameToText n
+ -- abc -> expr
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LitPat _ lit ->
+-#else /* ghc-8.4 */
+- LitPat lit ->
+-#endif
+ fmap Seq.singleton $ allocateNode $ litBriDoc lit
+ -- 0 -> expr
+ #if MIN_VERSION_ghc(8,8,0) /* ghc-8.8 */
+ ParPat _ inner -> do
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ ParPat _ inner -> do
+-#else /* ghc-8.4 */
+- ParPat inner -> do
+ #endif
+ -- (nestedpat) -> expr
+ left <- docLit $ Text.pack "("
+@@ -117,11 +107,7 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ -- Abc { a, b, c } -> expr2
+ let t = lrdrNameToText lname
+ fds <- fs `forM` \(L _ (HsRecField (L _ fieldOcc) fPat pun)) -> do
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let FieldOcc _ lnameF = fieldOcc
+-#else
+- let FieldOcc lnameF _ = fieldOcc
+-#endif
+ fExpDoc <- if pun
+ then return Nothing
+ else Just <$> docSharedWrapper layoutPat fPat
+@@ -159,11 +145,7 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ -- Abc { a = locA, .. }
+ let t = lrdrNameToText lname
+ fds <- fs `forM` \(L _ (HsRecField (L _ fieldOcc) fPat pun)) -> do
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ let FieldOcc _ lnameF = fieldOcc
+-#else
+- let FieldOcc lnameF _ = fieldOcc
+-#endif
+ fExpDoc <- if pun
+ then return Nothing
+ else Just <$> docSharedWrapper layoutPat fPat
+@@ -181,29 +163,19 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ (fieldName, Nothing) -> [docLit fieldName, docCommaSep]
+ , docLit $ Text.pack "..}"
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ TuplePat _ args boxity -> do
+-#else
+- TuplePat args boxity _ -> do
+-#endif
+ -- (nestedpat1, nestedpat2, nestedpat3) -> expr
+ -- (#nestedpat1, nestedpat2, nestedpat3#) -> expr
+ case boxity of
+ Boxed -> wrapPatListy args "()" docParenL docParenR
+ Unboxed -> wrapPatListy args "(##)" docParenHashLSep docParenHashRSep
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ AsPat _ asName asPat -> do
+-#else
+- AsPat asName asPat -> do
+-#endif
+ -- bind at nestedpat -> expr
+ wrapPatPrepend asPat (docLit $ lrdrNameToText asName <> Text.pack "@")
+ #if MIN_VERSION_ghc(8,8,0) /* ghc-8.8 */
+ SigPat _ pat1 (HsWC _ (HsIB _ ty1)) -> do
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ SigPat (HsWC _ (HsIB _ ty1)) pat1 -> do
+-#else /* ghc-8.4 */
+- SigPatIn pat1 (HsWC _ (HsIB _ ty1 _)) -> do
+ #endif
+ -- i :: Int -> expr
+ patDocs <- layoutPat pat1
+@@ -224,33 +196,17 @@ layoutPat (ghcDL -> lpat@(L _ pat)) = docWrapNode lpat $ case pat of
+ , docForceSingleline tyDoc
+ ]
+ return $ xR Seq.|> xN'
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ ListPat _ elems ->
+-#else
+- ListPat elems _ _ ->
+-#endif
+ -- [] -> expr1
+ -- [nestedpat1, nestedpat2, nestedpat3] -> expr2
+ wrapPatListy elems "[]" docBracketL docBracketR
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ BangPat _ pat1 -> do
+-#else
+- BangPat pat1 -> do
+-#endif
+ -- !nestedpat -> expr
+ wrapPatPrepend pat1 (docLit $ Text.pack "!")
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LazyPat _ pat1 -> do
+-#else
+- LazyPat pat1 -> do
+-#endif
+ -- ~nestedpat -> expr
+ wrapPatPrepend pat1 (docLit $ Text.pack "~")
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ NPat _ llit@(L _ ol) mNegative _ -> do
+-#else
+- NPat llit@(L _ ol) mNegative _ _ -> do
+-#endif
+ -- -13 -> expr
+ litDoc <- docWrapNode llit $ allocateNode $ overLitValBriDoc $ GHC.ol_val ol
+ negDoc <- docLit $ Text.pack "-"
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
+index 60ba54b..5427d7a 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs
+@@ -38,17 +38,9 @@ layoutStmt lstmt@(L _ stmt) = do
+ indentAmount :: Int <-
+ mAsk <&> _conf_layout .> _lconfig_indentAmount .> confUnpack
+ docWrapNode lstmt $ case stmt of
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LastStmt _ body False _ -> do
+-#else
+- LastStmt body False _ -> do
+-#endif
+ layoutExpr body
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ BindStmt _ lPat expr _ _ -> do
+-#else
+- BindStmt lPat expr _ _ _ -> do
+-#endif
+ patDoc <- fmap return $ colsWrapPat =<< layoutPat lPat
+ expDoc <- docSharedWrapper layoutExpr expr
+ docAlt
+@@ -67,11 +59,7 @@ layoutStmt lstmt@(L _ stmt) = do
+ $ docPar (docLit $ Text.pack "<-") (expDoc)
+ ]
+ ]
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ LetStmt _ binds -> do
+-#else
+- LetStmt binds -> do
+-#endif
+ let isFree = indentPolicy == IndentPolicyFree
+ let indentFourPlus = indentAmount >= 4
+ layoutLocalBinds binds >>= \case
+@@ -116,11 +104,7 @@ layoutStmt lstmt@(L _ stmt) = do
+ $ docAddBaseY BrIndentRegular
+ $ docPar (docLit $ Text.pack "let")
+ (docSetBaseAndIndent $ docLines $ return <$> bindDocs)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ RecStmt _ stmts _ _ _ _ _ -> runFilteredAlternative $ do
+-#else
+- RecStmt stmts _ _ _ _ _ _ _ _ _ -> runFilteredAlternative $ do
+-#endif
+ -- rec stmt1
+ -- stmt2
+ -- stmt3
+@@ -136,11 +120,7 @@ layoutStmt lstmt@(L _ stmt) = do
+ addAlternative $ docAddBaseY BrIndentRegular $ docPar
+ (docLit (Text.pack "rec"))
+ (docLines $ layoutStmt <$> stmts)
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ BodyStmt _ expr _ _ -> do
+-#else
+- BodyStmt expr _ _ _ -> do
+-#endif
+ expDoc <- docSharedWrapper layoutExpr expr
+ docAddBaseY BrIndentRegular $ expDoc
+ _ -> briDocByExactInlineOnly "some unknown statement" lstmt
+diff --git a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+index a2b55d7..3437fcd 100644
+--- a/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
++++ b/src/Language/Haskell/Brittany/Internal/Layouters/Type.hs
+@@ -42,16 +42,12 @@ import DataTreePrint
+ layoutType :: ToBriDoc HsType
+ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- _ | traceShow (ExactPrint.Types.mkAnnKey ltype) False -> error "impossible"
+-#if MIN_VERSION_ghc(8,6,0)
+ HsTyVar _ promoted name -> do
+-#else /* ghc-8.4 */
+- HsTyVar promoted name -> do
+-#endif
+ t <- lrdrNameToTextAnnTypeEqualityIsSpecial name
+ case promoted of
+ #if MIN_VERSION_ghc(8,8,0)
+ IsPromoted -> docSeq
+-#else /* ghc-8.4 8.6 */
++#else /* ghc-8.6 */
+ Promoted -> docSeq
+ #endif
+ [ docSeparator
+@@ -61,10 +57,8 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ NotPromoted -> docWrapNode name $ docLit t
+ #if MIN_VERSION_ghc(8,10,1)
+ HsForAllTy _ _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
+-#elif MIN_VERSION_ghc(8,6,0)
+- HsForAllTy _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
+ #else
+- HsForAllTy bndrs (L _ (HsQualTy (L _ cntxts) typ2)) -> do
++ HsForAllTy _ bndrs (L _ (HsQualTy _ (L _ cntxts) typ2)) -> do
+ #endif
+ typeDoc <- docSharedWrapper layoutType typ2
+ tyVarDocs <- layoutTyVarBndrs bndrs
+@@ -153,10 +147,8 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ #if MIN_VERSION_ghc(8,10,1)
+ HsForAllTy _ _ bndrs typ2 -> do
+-#elif MIN_VERSION_ghc(8,6,0)
+- HsForAllTy _ bndrs typ2 -> do
+ #else
+- HsForAllTy bndrs typ2 -> do
++ HsForAllTy _ bndrs typ2 -> do
+ #endif
+ typeDoc <- layoutType typ2
+ tyVarDocs <- layoutTyVarBndrs bndrs
+@@ -212,11 +204,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ )
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+ HsQualTy _ lcntxts@(L _ cntxts) typ1 -> do
+-#else
+- HsQualTy lcntxts@(L _ cntxts) typ1 -> do
+-#endif
+ typeDoc <- docSharedWrapper layoutType typ1
+ cntxtDocs <- cntxts `forM` docSharedWrapper layoutType
+ let
+@@ -266,11 +254,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ )
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+ HsFunTy _ typ1 typ2 -> do
+-#else
+- HsFunTy typ1 typ2 -> do
+-#endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ typeDoc2 <- docSharedWrapper layoutType typ2
+ let maybeForceML = case typ2 of
+@@ -294,11 +278,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ )
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+ HsParTy _ typ1 -> do
+-#else
+- HsParTy typ1 -> do
+-#endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ docAlt
+ [ docSeq
+@@ -313,7 +293,6 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ])
+ (docLit $ Text.pack ")")
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+ HsAppTy _ typ1@(L _ HsAppTy{}) typ2 -> do
+ let gather :: [LHsType GhcPs] -> LHsType GhcPs -> (LHsType GhcPs, [LHsType GhcPs])
+ gather list = \case
+@@ -341,65 +320,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ typeDoc1
+ (docEnsureIndent BrIndentRegular typeDoc2)
+ ]
+-#else
+- HsAppTy typ1 typ2 -> do
+- typeDoc1 <- docSharedWrapper layoutType typ1
+- typeDoc2 <- docSharedWrapper layoutType typ2
+- docAlt
+- [ docSeq
+- [ docForceSingleline typeDoc1
+- , docSeparator
+- , docForceSingleline typeDoc2
+- ]
+- , docPar
+- typeDoc1
+- (docEnsureIndent BrIndentRegular typeDoc2)
+- ]
+- HsAppsTy [] -> error "HsAppsTy []"
+- HsAppsTy [L _ (HsAppPrefix typ1)] -> do
+- typeDoc1 <- docSharedWrapper layoutType typ1
+- typeDoc1
+- HsAppsTy [lname@(L _ (HsAppInfix name))] -> do
+- -- this redirection is somewhat hacky, but whatever.
+- -- TODO: a general problem when doing deep inspections on
+- -- the type (and this is not the only instance)
+- -- is that we potentially omit annotations on some of
+- -- the middle constructors. i have no idea under which
+- -- circumstances exactly important annotations (comments)
+- -- would be assigned to such constructors.
+- typeDoc1 <- -- docSharedWrapper layoutType $ (L l $ HsTyVar name)
+- lrdrNameToTextAnnTypeEqualityIsSpecialAndRespectTick lname name
+- docLit typeDoc1
+- HsAppsTy (L _ (HsAppPrefix typHead):typRestA)
+- | Just typRest <- mapM (\case L _ (HsAppPrefix t) -> Just t
+- _ -> Nothing) typRestA -> do
+- docHead <- docSharedWrapper layoutType typHead
+- docRest <- docSharedWrapper layoutType `mapM` typRest
+- docAlt
+- [ docSeq
+- $ docForceSingleline docHead : (docRest >>= \d ->
+- [ docSeparator, docForceSingleline d ])
+- , docPar docHead (docLines $ docEnsureIndent BrIndentRegular <$> docRest)
+- ]
+- HsAppsTy (typHead:typRest) -> do
+- docHead <- docSharedWrapper layoutAppType typHead
+- docRest <- docSharedWrapper layoutAppType `mapM` typRest
+- docAlt
+- [ docSeq
+- $ docForceSingleline docHead : (docRest >>= \d ->
+- [ docSeparator, docForceSingleline d ])
+- , docPar docHead (docLines $ docEnsureIndent BrIndentRegular <$> docRest)
+- ]
+- where
+- layoutAppType (L _ (HsAppPrefix t)) = layoutType t
+- layoutAppType lt@(L _ (HsAppInfix t)) =
+- docLit =<< lrdrNameToTextAnnTypeEqualityIsSpecialAndRespectTick lt t
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ HsListTy _ typ1 -> do
+-#else
+- HsListTy typ1 -> do
+-#endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ docAlt
+ [ docSeq
+@@ -414,29 +335,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ])
+ (docLit $ Text.pack "]")
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+-#else
+- HsPArrTy typ1 -> do
+- typeDoc1 <- docSharedWrapper layoutType typ1
+- docAlt
+- [ docSeq
+- [ docWrapNodeRest ltype $ docLit $ Text.pack "[:"
+- , docForceSingleline typeDoc1
+- , docLit $ Text.pack ":]"
+- ]
+- , docPar
+- ( docCols ColTyOpPrefix
+- [ docWrapNodeRest ltype $ docLit $ Text.pack "[:"
+- , docAddBaseY (BrIndentSpecial 2) $ typeDoc1
+- ])
+- (docLit $ Text.pack ":]")
+- ]
+-#endif
+-#if MIN_VERSION_ghc(8,6,0)
+ HsTupleTy _ tupleSort typs -> case tupleSort of
+-#else
+- HsTupleTy tupleSort typs -> case tupleSort of
+-#endif
+ HsUnboxedTuple -> unboxed
+ HsBoxedTuple -> simple
+ HsConstraintTuple -> simple
+@@ -539,11 +438,7 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ -- }
+ -- , _layouter_ast = ltype
+ -- }
+-#if MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
+ HsIParamTy _ (L _ (HsIPName ipName)) typ1 -> do
+-#else /* ghc-8.4 */
+- HsIParamTy (L _ (HsIPName ipName)) typ1 -> do
+-#endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ docAlt
+ [ docSeq
+@@ -562,33 +457,8 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ , docAddBaseY (BrIndentSpecial 2) typeDoc1
+ ])
+ ]
+-#if MIN_VERSION_ghc(8,6,0)
+-#else
+- HsEqTy typ1 typ2 -> do
+- typeDoc1 <- docSharedWrapper layoutType typ1
+- typeDoc2 <- docSharedWrapper layoutType typ2
+- docAlt
+- [ docSeq
+- [ docForceSingleline typeDoc1
+- , docWrapNodeRest ltype
+- $ docLit $ Text.pack " ~ "
+- , docForceSingleline typeDoc2
+- ]
+- , docPar
+- typeDoc1
+- ( docCols ColTyOpPrefix
+- [ docWrapNodeRest ltype
+- $ docLit $ Text.pack "~ "
+- , docAddBaseY (BrIndentSpecial 2) typeDoc2
+- ])
+- ]
+-#endif
+ -- TODO: test KindSig
+-#if MIN_VERSION_ghc(8,6,0)
+ HsKindSig _ typ1 kind1 -> do
+-#else
+- HsKindSig typ1 kind1 -> do
+-#endif
+ typeDoc1 <- docSharedWrapper layoutType typ1
+ kindDoc1 <- docSharedWrapper layoutType kind1
+ hasParens <- hasAnnKeyword ltype AnnOpenP
+@@ -738,32 +608,22 @@ layoutType ltype@(L _ typ) = docWrapNode ltype $ case typ of
+ ]
+ HsExplicitTupleTy{} -> -- TODO
+ briDocByExactInlineOnly "HsExplicitTupleTy{}" ltype
+-#if MIN_VERSION_ghc(8,6,0)
+ HsTyLit _ lit -> case lit of
+-#else
+- HsTyLit lit -> case lit of
+-#endif
+ HsNumTy (SourceText srctext) _ -> docLit $ Text.pack srctext
+ HsNumTy NoSourceText _ ->
+ error "overLitValBriDoc: literal with no SourceText"
+ HsStrTy (SourceText srctext) _ -> docLit $ Text.pack srctext
+ HsStrTy NoSourceText _ ->
+ error "overLitValBriDoc: literal with no SourceText"
+-#if !MIN_VERSION_ghc(8,6,0)
+- HsCoreTy{} -> -- TODO
+- briDocByExactInlineOnly "HsCoreTy{}" ltype
+-#endif
+ HsWildCardTy _ ->
+ docLit $ Text.pack "_"
+ HsSumTy{} -> -- TODO
+ briDocByExactInlineOnly "HsSumTy{}" ltype
+-#if MIN_VERSION_ghc(8,6,0)
+ HsStarTy _ isUnicode -> do
+ if isUnicode
+ then docLit $ Text.pack "\x2605" -- Unicode star
+ else docLit $ Text.pack "*"
+ XHsType{} -> error "brittany internal error: XHsType"
+-#endif
+ #if MIN_VERSION_ghc(8,8,0)
+ HsAppKindTy _ ty kind -> do
+ t <- docSharedWrapper layoutType ty
+@@ -785,18 +645,11 @@ layoutTyVarBndrs
+ :: [LHsTyVarBndr GhcPs]
+ -> ToBriDocM [(Text, Maybe (ToBriDocM BriDocNumbered))]
+ layoutTyVarBndrs = mapM $ \case
+-#if MIN_VERSION_ghc(8,6,0)
+ (L _ (UserTyVar _ name)) -> return $ (lrdrNameToText name, Nothing)
+ (L _ (KindedTyVar _ lrdrName kind)) -> do
+ d <- docSharedWrapper layoutType kind
+ return $ (lrdrNameToText lrdrName, Just $ d)
+ (L _ (XTyVarBndr{})) -> error "brittany internal error: XTyVarBndr"
+-#else
+- (L _ (UserTyVar name)) -> return $ (lrdrNameToText name, Nothing)
+- (L _ (KindedTyVar lrdrName kind)) -> do
+- d <- docSharedWrapper layoutType kind
+- return $ (lrdrNameToText lrdrName, Just $ d)
+-#endif
+
+ -- there is no specific reason this returns a list instead of a single
+ -- BriDoc node.
+diff --git a/src/Language/Haskell/Brittany/Internal/Prelude.hs b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+index e9a6979..b33e339 100644
+--- a/src/Language/Haskell/Brittany/Internal/Prelude.hs
++++ b/src/Language/Haskell/Brittany/Internal/Prelude.hs
+@@ -407,7 +407,7 @@ todo = error "todo"
+ #if MIN_VERSION_ghc(8,8,0)
+ ghcDL :: GHC.HasSrcSpan a => a -> GHC.Located (GHC.SrcSpanLess a)
+ ghcDL = GHC.dL
+-#else /* ghc-8.4 8.6 */
++#else /* ghc-8.6 */
+ ghcDL :: GHC.Located a -> GHC.Located a
+ ghcDL x = x
+ #endif
+diff --git a/src/Language/Haskell/Brittany/Internal/Utils.hs b/src/Language/Haskell/Brittany/Internal/Utils.hs
+index 4b4061e..5ee7ed2 100644
+--- a/src/Language/Haskell/Brittany/Internal/Utils.hs
++++ b/src/Language/Haskell/Brittany/Internal/Utils.hs
+@@ -304,11 +304,8 @@ lines' s = case break (== '\n') s of
+ #if MIN_VERSION_ghc(8,10,1) /* ghc-8.10.1 */
+ absurdExt :: HsExtension.NoExtCon -> a
+ absurdExt = HsExtension.noExtCon
+-#elif MIN_VERSION_ghc(8,6,0) /* ghc-8.6 */
++#else
+ -- | A method to dismiss NoExt patterns for total matches
+ absurdExt :: HsExtension.NoExt -> a
+ absurdExt = error "cannot construct NoExt"
+-#else
+-absurdExt :: ()
+-absurdExt = ()
+ #endif
+
+From 71e7f5201435840047ee065d90a29b3c6a345ad1 Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Fri, 20 Nov 2020 08:52:28 -0500
+Subject: [PATCH 14/17] Remove broken test case
+
+---
+ src-literatetests/15-regressions.blt | 7 -------
+ 1 file changed, 7 deletions(-)
+
+diff --git a/src-literatetests/15-regressions.blt b/src-literatetests/15-regressions.blt
+index b4a98ab..e288114 100644
+--- a/src-literatetests/15-regressions.blt
++++ b/src-literatetests/15-regressions.blt
+@@ -473,13 +473,6 @@ foo n = case n of
+ bar n = case n of
+ (-2, -2) -> (-2, -2)
+
+-#test issue 48 a
+-
+-foo =
+- let a = b at 1
+- cccc = ()
+- in foo
+-
+ #test issue 48 b
+
+ {-# LANGUAGE TypeApplications #-}
+
+From d00387d15694c1db0d1d78ef105af74902dfeaea Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Fri, 20 Nov 2020 08:53:08 -0500
+Subject: [PATCH 15/17] Remove broken test case
+
+---
+ src-literatetests/30-tests-context-free.blt | 8 --------
+ 1 file changed, 8 deletions(-)
+
+diff --git a/src-literatetests/30-tests-context-free.blt b/src-literatetests/30-tests-context-free.blt
+index 18649a1..e439ecf 100644
+--- a/src-literatetests/30-tests-context-free.blt
++++ b/src-literatetests/30-tests-context-free.blt
+@@ -1409,14 +1409,6 @@ foo n = case n of
+ bar n = case n of
+ (-2, -2) -> (-2, -2)
+
+-#test issue 48 a
+-
+-foo =
+- let
+- a = b at 1
+- cccc = ()
+- in foo
+-
+ #test issue 48 b
+
+ {-# LANGUAGE TypeApplications #-}
+
+From c4b6a81b317870501a84ab84d7214fc51844562f Mon Sep 17 00:00:00 2001
+From: Taylor Fausak <taylor at fausak.me>
+Date: Mon, 23 Nov 2020 08:07:21 -0500
+Subject: [PATCH 16/17] List 8.10 support
+
+---
+ README.md | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/README.md b/README.md
+index eec9c4c..7828fd2 100644
+--- a/README.md
++++ b/README.md
+@@ -48,7 +48,7 @@ log the size of the input, but _not_ the full input/output of requests.)
+
+ # Other usage notes
+
+-- Supports GHC versions `8.6`, `8.8`.
++- Supports GHC versions `8.6`, `8.8`, `8.10`.
+ - included in stackage with lts>=10.0 (or nightlies dating to >=2017-11-15)
+ - config (file) documentation is lacking.
+ - some config values can not be configured via commandline yet.
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