packages feed

cabal-fmt (empty) → 0.1

raw patch · 22 files changed

+3242/−0 lines, 22 filesdep +Cabaldep +basedep +bytestring

Dependencies added: Cabal, base, bytestring, cabal-fmt, containers, directory, filepath, mtl, optparse-applicative, parsec, pretty, process, tasty, tasty-golden

Files

+ LICENSE view
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Of course, your program's commands+might be different; for a GUI interface, you would use an "about box".++  You should also get your employer (if you work as a programmer) or school,+if any, to sign a "copyright disclaimer" for the program, if necessary.+For more information on this, and how to apply and follow the GNU GPL, see+<http://www.gnu.org/licenses/>.++  The GNU General Public License does not permit incorporating your program+into proprietary programs.  If your program is a subroutine library, you+may consider it more useful to permit linking proprietary applications with+the library.  If this is what you want to do, use the GNU Lesser General+Public License instead of this License.  But first, please read+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+ cabal-fmt.cabal view
@@ -0,0 +1,103 @@+cabal-version:      2.2+name:               cabal-fmt+version:            0.1+synopsis:           Format .cabal files+category:           Development+description:+  Format @.cabal@ files preserving the original ordering and comments.+  .+  Tuned for Oleg's preference, but has some knobs still.++license:            GPL-3.0-or-later+license-file:       LICENSE+author:             Oleg Grenrus <oleg.grenrus@iki.fi>+maintainer:         Oleg Grenrus <oleg.grenrus@iki.fi>+tested-with:        GHC ==8.4.4 || ==8.6.5+extra-source-files:+  fixtures/*.cabal+  fixtures/*.format++source-repository head+  type:     git+  location: https://github.com/phadej/cabal-fmt.git++library cabal-fmt-internal+  default-language: Haskell2010+  hs-source-dirs:   src++  -- GHC boot libraries+  build-depends:+    , base        ^>=4.11.1.0 || ^>=4.12.0.0+    , bytestring  ^>=0.10.8.2+    , Cabal       ^>=3.0.0.0+    , containers  ^>=0.5.11.0 || ^>=0.6.0.1+    , filepath    ^>=1.4.2+    , mtl         ^>=2.2.2+    , parsec      ^>=3.1.13.0+    , pretty      ^>=1.1.3.6++  -- cabal-fmt: expand src+  --+  -- Note: the module list is expanded only when cabal-fmt is run from a+  -- command line, with a single file. This is to get right relative+  -- working directory.+  --+  exposed-modules:+    CabalFmt+    CabalFmt.Comments+    CabalFmt.Error+    CabalFmt.Fields+    CabalFmt.Fields.BuildDepends+    CabalFmt.Fields.Extensions+    CabalFmt.Fields.Modules+    CabalFmt.Fields.TestedWith+    CabalFmt.Monad+    CabalFmt.Options+    CabalFmt.Parser+    CabalFmt.Refactoring++  other-extensions:+    DeriveFunctor+    DerivingStrategies+    ExistentialQuantification+    FlexibleContexts+    GeneralizedNewtypeDeriving+    OverloadedStrings+    RankNTypes++executable cabal-fmt+  default-language: Haskell2010+  hs-source-dirs:   cli+  main-is:          Main.hs++  -- dependencies in library+  build-depends:+    , base+    , bytestring+    , cabal-fmt-internal+    , filepath++  -- extra dependencies+  build-depends:+    , directory             ^>=1.3.1.5+    , optparse-applicative  >=0.14.3.0 && <0.16++test-suite golden+  type:             exitcode-stdio-1.0+  default-language: Haskell2010+  hs-source-dirs:   tests+  main-is:          Golden.hs++  -- dependencies in library+  build-depends:+    , base+    , bytestring+    , Cabal+    , cabal-fmt-internal++  -- test dependencies+  build-depends:+    , filepath+    , process+    , tasty+    , tasty-golden
+ cli/Main.hs view
@@ -0,0 +1,108 @@+module Main (main) where++import Control.Applicative (many, (<**>))+import Data.Foldable       (for_)+import System.Directory    (doesDirectoryExist, getDirectoryContents)+import System.Exit         (exitFailure)+import System.FilePath     (takeDirectory, (</>))+import System.IO.Unsafe    (unsafeInterleaveIO)++import qualified Data.ByteString     as BS+import qualified Options.Applicative as O++import CabalFmt         (cabalFmt)+import CabalFmt.Error   (renderError)+import CabalFmt.Monad   (runCabalFmt)+import CabalFmt.Options++main :: IO ()+main = do+    (inplace, opts', filepaths) <- O.execParser optsP'++    -- glob all files, only when a single filepath is given.+    files <- case filepaths of+        [fp] -> getFiles (takeDirectory fp)+        _    -> return []+    let opts = opts' { optFileList = files }++    case filepaths of+        []    -> BS.getContents       >>= main' False opts "<stdin>"+        (_:_) -> for_ filepaths $ \filepath ->+            BS.readFile filepath >>= main' inplace opts filepath+  where+    optsP' = O.info (optsP <**> O.helper) $ mconcat+        [ O.fullDesc+        , O.progDesc "Reformat .cabal files"+        , O.header "cabal-fmt - .cabal file reformatter"+        ]++main' :: Bool -> Options -> FilePath -> BS.ByteString -> IO ()+main' inplace opts filepath input =+    case runCabalFmt opts (cabalFmt filepath input) of+        Right output+            | inplace   -> writeFile filepath output+            | otherwise -> putStr output+        Left err     -> do+            renderError err+            exitFailure++-------------------------------------------------------------------------------+-- Options parser+-------------------------------------------------------------------------------++optsP :: O.Parser (Bool, Options, [FilePath])+optsP = (,,)+    <$> O.flag False True (O.short 'i' <> O.long "inplace" <> O.help "process files in-place")+    <*> optsP'+    <*> many (O.strArgument (O.metavar "FILE" <> O.help "input files"))+  where+    optsP' = Options+        <$> O.option O.auto (O.long "indent" <> O.value (optIndent defaultOptions) <> O.help "Indentation" <> O.showDefault)+        <*> pure (optSpecVersion defaultOptions)+        <*> pure []++-------------------------------------------------------------------------------+-- Files+-------------------------------------------------------------------------------++getFiles :: FilePath -> IO [FilePath]+getFiles = getDirectoryContentsRecursive' check where+    check "dist-newstyle" = False+    check ('.' : _)       = False+    check _               = True++-- | List all the files in a directory and all subdirectories.+--+-- The order places files in sub-directories after all the files in their+-- parent directories. The list is generated lazily so is not well defined if+-- the source directory structure changes before the list is used.+--+-- /Note:/ From @Cabal@'s "Distribution.Simple.Utils"+getDirectoryContentsRecursive'+    :: (FilePath -> Bool) -- ^ Check, whether to recurse+    -> FilePath           -- ^ top dir+    -> IO [FilePath]+getDirectoryContentsRecursive' ignore' topdir = recurseDirectories [""]+  where+    recurseDirectories :: [FilePath] -> IO [FilePath]+    recurseDirectories []         = return []+    recurseDirectories (dir:dirs) = unsafeInterleaveIO $ do+      (files, dirs') <- collect [] [] =<< getDirectoryContents (topdir </> dir)+      files' <- recurseDirectories (dirs' ++ dirs)+      return (files ++ files')++      where+        collect files dirs' []              = return (reverse files+                                                     ,reverse dirs')+        collect files dirs' (entry:entries) | ignore entry+                                            = collect files dirs' entries+        collect files dirs' (entry:entries) = do+          let dirEntry = dir </> entry+          isDirectory <- doesDirectoryExist (topdir </> dirEntry)+          if isDirectory+            then collect files (dirEntry:dirs') entries+            else collect (dirEntry:files) dirs' entries++        ignore ['.']      = True+        ignore ['.', '.'] = True+        ignore x          = not (ignore' x)
+ fixtures/Cabal.cabal view
@@ -0,0 +1,652 @@+name:          Cabal+version:       2.5.0.0+copyright:     2003-2018, Cabal Development Team (see AUTHORS file)+license:       BSD3+license-file:  LICENSE+author:        Cabal Development Team <cabal-devel@haskell.org>+maintainer:    cabal-devel@haskell.org+homepage:      http://www.haskell.org/cabal/+bug-reports:   https://github.com/haskell/cabal/issues+synopsis:      A framework for packaging Haskell software+description:+  The Haskell Common Architecture for Building Applications and+  Libraries: a framework defining a common interface for authors to more+  easily build their Haskell applications in a portable way.+  .+  The Haskell Cabal is part of a larger infrastructure for distributing,+  organizing, and cataloging Haskell libraries and tools.+category:       Distribution+cabal-version:  >=1.10+build-type:     Simple+-- If we use a new Cabal feature, this needs to be changed to Custom so+-- we can bootstrap.++extra-source-files:+  README.md tests/README.md ChangeLog.md+  doc/bugs-and-stability.rst doc/concepts-and-development.rst+  doc/conf.py doc/config-and-install.rst doc/developing-packages.rst+  doc/images/Cabal-dark.png doc/index.rst doc/installing-packages.rst+  doc/intro.rst doc/misc.rst doc/nix-local-build-overview.rst+  doc/nix-local-build.rst doc/file-format-changelog.rst doc/README.md+  doc/references.inc++  -- Generated with 'make gen-extra-source-files'+  -- Do NOT edit this section manually; instead, run the script.+  -- BEGIN gen-extra-source-files+  tests/ParserTests/errors/common1.cabal+  tests/ParserTests/errors/common1.errors+  tests/ParserTests/errors/common2.cabal+  tests/ParserTests/errors/common2.errors+  tests/ParserTests/errors/common3.cabal+  tests/ParserTests/errors/common3.errors+  tests/ParserTests/errors/forward-compat.cabal+  tests/ParserTests/errors/forward-compat.errors+  tests/ParserTests/errors/forward-compat2.cabal+  tests/ParserTests/errors/forward-compat2.errors+  tests/ParserTests/errors/forward-compat3.cabal+  tests/ParserTests/errors/forward-compat3.errors+  tests/ParserTests/errors/issue-5055-2.cabal+  tests/ParserTests/errors/issue-5055-2.errors+  tests/ParserTests/errors/issue-5055.cabal+  tests/ParserTests/errors/issue-5055.errors+  tests/ParserTests/errors/leading-comma-2.cabal+  tests/ParserTests/errors/leading-comma-2.errors+  tests/ParserTests/errors/leading-comma-2b.cabal+  tests/ParserTests/errors/leading-comma-2b.errors+  tests/ParserTests/errors/leading-comma-2c.cabal+  tests/ParserTests/errors/leading-comma-2c.errors+  tests/ParserTests/errors/leading-comma.cabal+  tests/ParserTests/errors/leading-comma.errors+  tests/ParserTests/errors/multiple-libs.cabal+  tests/ParserTests/errors/multiple-libs.errors+  tests/ParserTests/errors/noVersion.cabal+  tests/ParserTests/errors/noVersion.errors+  tests/ParserTests/errors/noVersion2.cabal+  tests/ParserTests/errors/noVersion2.errors+  tests/ParserTests/errors/range-ge-wild.cabal+  tests/ParserTests/errors/range-ge-wild.errors+  tests/ParserTests/errors/removed-fields.cabal+  tests/ParserTests/errors/removed-fields.errors+  tests/ParserTests/errors/spdx-1.cabal+  tests/ParserTests/errors/spdx-1.errors+  tests/ParserTests/errors/spdx-2.cabal+  tests/ParserTests/errors/spdx-2.errors+  tests/ParserTests/errors/spdx-3.cabal+  tests/ParserTests/errors/spdx-3.errors+  tests/ParserTests/ipi/Includes2.cabal+  tests/ParserTests/ipi/Includes2.expr+  tests/ParserTests/ipi/Includes2.format+  tests/ParserTests/ipi/internal-preprocessor-test.cabal+  tests/ParserTests/ipi/internal-preprocessor-test.expr+  tests/ParserTests/ipi/internal-preprocessor-test.format+  tests/ParserTests/ipi/issue-2276-ghc-9885.cabal+  tests/ParserTests/ipi/issue-2276-ghc-9885.expr+  tests/ParserTests/ipi/issue-2276-ghc-9885.format+  tests/ParserTests/ipi/transformers.cabal+  tests/ParserTests/ipi/transformers.expr+  tests/ParserTests/ipi/transformers.format+  tests/ParserTests/regressions/MiniAgda.cabal+  tests/ParserTests/regressions/MiniAgda.check+  tests/ParserTests/regressions/Octree-0.5.cabal+  tests/ParserTests/regressions/Octree-0.5.expr+  tests/ParserTests/regressions/Octree-0.5.format+  tests/ParserTests/regressions/bad-glob-syntax.cabal+  tests/ParserTests/regressions/bad-glob-syntax.check+  tests/ParserTests/regressions/cc-options-with-optimization.cabal+  tests/ParserTests/regressions/cc-options-with-optimization.check+  tests/ParserTests/regressions/common-conditional.cabal+  tests/ParserTests/regressions/common-conditional.expr+  tests/ParserTests/regressions/common-conditional.format+  tests/ParserTests/regressions/common.cabal+  tests/ParserTests/regressions/common.expr+  tests/ParserTests/regressions/common.format+  tests/ParserTests/regressions/common2.cabal+  tests/ParserTests/regressions/common2.expr+  tests/ParserTests/regressions/common2.format+  tests/ParserTests/regressions/cxx-options-with-optimization.cabal+  tests/ParserTests/regressions/cxx-options-with-optimization.check+  tests/ParserTests/regressions/elif.cabal+  tests/ParserTests/regressions/elif.expr+  tests/ParserTests/regressions/elif.format+  tests/ParserTests/regressions/elif2.cabal+  tests/ParserTests/regressions/elif2.expr+  tests/ParserTests/regressions/elif2.format+  tests/ParserTests/regressions/encoding-0.8.cabal+  tests/ParserTests/regressions/encoding-0.8.expr+  tests/ParserTests/regressions/encoding-0.8.format+  tests/ParserTests/regressions/extensions-paths-5054.cabal+  tests/ParserTests/regressions/extensions-paths-5054.check+  tests/ParserTests/regressions/generics-sop.cabal+  tests/ParserTests/regressions/generics-sop.expr+  tests/ParserTests/regressions/generics-sop.format+  tests/ParserTests/regressions/ghc-option-j.cabal+  tests/ParserTests/regressions/ghc-option-j.check+  tests/ParserTests/regressions/haddock-api-2.18.1-check.cabal+  tests/ParserTests/regressions/haddock-api-2.18.1-check.check+  tests/ParserTests/regressions/hidden-main-lib.cabal+  tests/ParserTests/regressions/hidden-main-lib.expr+  tests/ParserTests/regressions/hidden-main-lib.format+  tests/ParserTests/regressions/issue-5055.cabal+  tests/ParserTests/regressions/issue-5055.expr+  tests/ParserTests/regressions/issue-5055.format+  tests/ParserTests/regressions/issue-774.cabal+  tests/ParserTests/regressions/issue-774.check+  tests/ParserTests/regressions/issue-774.expr+  tests/ParserTests/regressions/issue-774.format+  tests/ParserTests/regressions/jaeger-flamegraph.cabal+  tests/ParserTests/regressions/jaeger-flamegraph.expr+  tests/ParserTests/regressions/jaeger-flamegraph.format+  tests/ParserTests/regressions/leading-comma-2.cabal+  tests/ParserTests/regressions/leading-comma-2.expr+  tests/ParserTests/regressions/leading-comma-2.format+  tests/ParserTests/regressions/leading-comma.cabal+  tests/ParserTests/regressions/leading-comma.expr+  tests/ParserTests/regressions/leading-comma.format+  tests/ParserTests/regressions/multiple-libs-2.cabal+  tests/ParserTests/regressions/multiple-libs-2.check+  tests/ParserTests/regressions/multiple-libs-2.expr+  tests/ParserTests/regressions/multiple-libs-2.format+  tests/ParserTests/regressions/noVersion.cabal+  tests/ParserTests/regressions/noVersion.expr+  tests/ParserTests/regressions/noVersion.format+  tests/ParserTests/regressions/nothing-unicode.cabal+  tests/ParserTests/regressions/nothing-unicode.check+  tests/ParserTests/regressions/nothing-unicode.expr+  tests/ParserTests/regressions/nothing-unicode.format+  tests/ParserTests/regressions/pre-1.6-glob.cabal+  tests/ParserTests/regressions/pre-1.6-glob.check+  tests/ParserTests/regressions/pre-2.4-globstar.cabal+  tests/ParserTests/regressions/pre-2.4-globstar.check+  tests/ParserTests/regressions/shake.cabal+  tests/ParserTests/regressions/shake.expr+  tests/ParserTests/regressions/shake.format+  tests/ParserTests/regressions/spdx-1.cabal+  tests/ParserTests/regressions/spdx-1.expr+  tests/ParserTests/regressions/spdx-1.format+  tests/ParserTests/regressions/spdx-2.cabal+  tests/ParserTests/regressions/spdx-2.expr+  tests/ParserTests/regressions/spdx-2.format+  tests/ParserTests/regressions/spdx-3.cabal+  tests/ParserTests/regressions/spdx-3.expr+  tests/ParserTests/regressions/spdx-3.format+  tests/ParserTests/regressions/th-lift-instances.cabal+  tests/ParserTests/regressions/th-lift-instances.expr+  tests/ParserTests/regressions/th-lift-instances.format+  tests/ParserTests/regressions/wl-pprint-indef.cabal+  tests/ParserTests/regressions/wl-pprint-indef.expr+  tests/ParserTests/regressions/wl-pprint-indef.format+  tests/ParserTests/warnings/bom.cabal+  tests/ParserTests/warnings/bool.cabal+  tests/ParserTests/warnings/deprecatedfield.cabal+  tests/ParserTests/warnings/doubledash.cabal+  tests/ParserTests/warnings/extratestmodule.cabal+  tests/ParserTests/warnings/gluedop.cabal+  tests/ParserTests/warnings/multiplesingular.cabal+  tests/ParserTests/warnings/nbsp.cabal+  tests/ParserTests/warnings/newsyntax.cabal+  tests/ParserTests/warnings/oldsyntax.cabal+  tests/ParserTests/warnings/subsection.cabal+  tests/ParserTests/warnings/tab.cabal+  tests/ParserTests/warnings/trailingfield.cabal+  tests/ParserTests/warnings/unknownfield.cabal+  tests/ParserTests/warnings/unknownsection.cabal+  tests/ParserTests/warnings/utf8.cabal+  tests/ParserTests/warnings/versiontag.cabal+  tests/hackage/check.sh+  tests/hackage/download.sh+  tests/hackage/unpack.sh+  tests/misc/ghc-supported-languages.hs+  -- END gen-extra-source-files++source-repository head+  type:     git+  location: https://github.com/haskell/cabal/+  subdir:   Cabal++flag bundled-binary-generic+  default: False++library+  build-depends:+    array      >= 0.4.0.1  && < 0.6,+    base       >= 4.6      && < 5,+    bytestring >= 0.10.0.0 && < 0.11,+    containers >= 0.5.0.0  && < 0.7,+    deepseq    >= 1.3.0.1  && < 1.5,+    directory  >= 1.2      && < 1.4,+    filepath   >= 1.3.0.1  && < 1.5,+    pretty     >= 1.1.1    && < 1.2,+    process    >= 1.1.0.2  && < 1.7,+    time       >= 1.4.0.1  && < 1.10++  if flag(bundled-binary-generic)+    build-depends: binary >= 0.5.1.1 && < 0.7+  else+    build-depends: binary >= 0.7 && < 0.9++  if os(windows)+    build-depends: Win32 >= 2.3.0.0 && < 2.9+  else+    build-depends: unix  >= 2.6.0.0 && < 2.8++  ghc-options: -Wall -fno-ignore-asserts -fwarn-tabs+  if impl(ghc >= 8.0)+    ghc-options: -Wcompat -Wnoncanonical-monad-instances+                 -Wnoncanonical-monadfail-instances++  exposed-modules:+    Distribution.Backpack+    Distribution.Backpack.Configure+    Distribution.Backpack.ComponentsGraph+    Distribution.Backpack.ConfiguredComponent+    Distribution.Backpack.DescribeUnitId+    Distribution.Backpack.FullUnitId+    Distribution.Backpack.LinkedComponent+    Distribution.Backpack.ModSubst+    Distribution.Backpack.ModuleShape+    Distribution.Backpack.PreModuleShape+    Distribution.CabalSpecVersion+    Distribution.Utils.IOData+    Distribution.Utils.LogProgress+    Distribution.Utils.MapAccum+    Distribution.Compat.CreatePipe+    Distribution.Compat.Directory+    Distribution.Compat.Environment+    Distribution.Compat.Exception+    Distribution.Compat.Graph+    Distribution.Compat.Internal.TempFile+    Distribution.Compat.Newtype+    Distribution.Compat.Prelude.Internal+    Distribution.Compat.Semigroup+    Distribution.Compat.Stack+    Distribution.Compat.Time+    Distribution.Compat.DList+    Distribution.Compiler+    Distribution.InstalledPackageInfo+    Distribution.Types.AbiDependency+    Distribution.Types.ExposedModule+    Distribution.Types.InstalledPackageInfo+    Distribution.Types.InstalledPackageInfo.FieldGrammar+    Distribution.License+    Distribution.Make+    Distribution.ModuleName+    Distribution.Package+    Distribution.PackageDescription+    Distribution.PackageDescription.Check+    Distribution.PackageDescription.Configuration+    Distribution.PackageDescription.PrettyPrint+    Distribution.PackageDescription.Utils+    Distribution.ReadE+    Distribution.Simple+    Distribution.Simple.Bench+    Distribution.Simple.Build+    Distribution.Simple.Build.Macros+    Distribution.Simple.Build.PathsModule+    Distribution.Simple.BuildPaths+    Distribution.Simple.BuildTarget+    Distribution.Simple.BuildToolDepends+    Distribution.Simple.CCompiler+    Distribution.Simple.Command+    Distribution.Simple.Compiler+    Distribution.Simple.Configure+    Distribution.Simple.Flag+    Distribution.Simple.GHC+    Distribution.Simple.GHCJS+    Distribution.Simple.Haddock+    Distribution.Simple.Doctest+    Distribution.Simple.Glob+    Distribution.Simple.HaskellSuite+    Distribution.Simple.Hpc+    Distribution.Simple.Install+    Distribution.Simple.InstallDirs+    Distribution.Simple.LocalBuildInfo+    Distribution.Simple.PackageIndex+    Distribution.Simple.PreProcess+    Distribution.Simple.PreProcess.Unlit+    Distribution.Simple.Program+    Distribution.Simple.Program.Ar+    Distribution.Simple.Program.Builtin+    Distribution.Simple.Program.Db+    Distribution.Simple.Program.Find+    Distribution.Simple.Program.GHC+    Distribution.Simple.Program.HcPkg+    Distribution.Simple.Program.Hpc+    Distribution.Simple.Program.Internal+    Distribution.Simple.Program.Ld+    Distribution.Simple.Program.ResponseFile+    Distribution.Simple.Program.Run+    Distribution.Simple.Program.Script+    Distribution.Simple.Program.Strip+    Distribution.Simple.Program.Types+    Distribution.Simple.Register+    Distribution.Simple.Setup+    Distribution.Simple.SrcDist+    Distribution.Simple.Test+    Distribution.Simple.Test.ExeV10+    Distribution.Simple.Test.LibV09+    Distribution.Simple.Test.Log+    Distribution.Simple.UHC+    Distribution.Simple.UserHooks+    Distribution.Simple.Utils+    Distribution.SPDX+    Distribution.SPDX.License+    Distribution.SPDX.LicenseId+    Distribution.SPDX.LicenseExceptionId+    Distribution.SPDX.LicenseExpression+    Distribution.SPDX.LicenseListVersion+    Distribution.SPDX.LicenseReference+    Distribution.System+    Distribution.TestSuite+    Distribution.Text+    Distribution.Pretty+    Distribution.Types.AbiHash+    Distribution.Types.AnnotatedId+    Distribution.Types.Benchmark+    Distribution.Types.BenchmarkInterface+    Distribution.Types.BenchmarkType+    Distribution.Types.BuildInfo+    Distribution.Types.BuildType+    Distribution.Types.ComponentInclude+    Distribution.Types.Dependency+    Distribution.Types.ExeDependency+    Distribution.Types.LegacyExeDependency+    Distribution.Types.PkgconfigDependency+    Distribution.Types.DependencyMap+    Distribution.Types.ComponentId+    Distribution.Types.MungedPackageId+    Distribution.Types.PackageId+    Distribution.Types.UnitId+    Distribution.Types.Executable+    Distribution.Types.ExecutableScope+    Distribution.Types.Library+    Distribution.Types.LibraryVisibility+    Distribution.Types.ForeignLib+    Distribution.Types.ForeignLibType+    Distribution.Types.ForeignLibOption+    Distribution.Types.Module+    Distribution.Types.ModuleReexport+    Distribution.Types.ModuleRenaming+    Distribution.Types.ComponentName+    Distribution.Types.LibraryName+    Distribution.Types.MungedPackageName+    Distribution.Types.PackageName+    Distribution.Types.PkgconfigName+    Distribution.Types.UnqualComponentName+    Distribution.Types.IncludeRenaming+    Distribution.Types.Mixin+    Distribution.Types.SetupBuildInfo+    Distribution.Types.TestSuite+    Distribution.Types.TestSuiteInterface+    Distribution.Types.TestType+    Distribution.Types.GenericPackageDescription+    Distribution.Types.Condition+    Distribution.Types.CondTree+    Distribution.Types.HookedBuildInfo+    Distribution.Types.PackageDescription+    Distribution.Types.SourceRepo+    Distribution.Types.Component+    Distribution.Types.ComponentLocalBuildInfo+    Distribution.Types.LocalBuildInfo+    Distribution.Types.ComponentRequestedSpec+    Distribution.Types.TargetInfo+    Distribution.Types.Version+    Distribution.Types.VersionRange+    Distribution.Types.VersionInterval+    Distribution.Types.GivenComponent+    Distribution.Types.PackageVersionConstraint+    Distribution.Utils.Generic+    Distribution.Utils.NubList+    Distribution.Utils.ShortText+    Distribution.Utils.Progress+    Distribution.Verbosity+    Distribution.Version+    Language.Haskell.Extension+    Distribution.Compat.Binary++  -- Parsec parser-related modules+  build-depends:+    -- transformers-0.4.0.0 doesn't have record syntax e.g. for Identity+    -- See also https://github.com/ekmett/transformers-compat/issues/35+    transformers (>= 0.3      && < 0.4) || (>=0.4.1.0 && <0.6),+    mtl           >= 2.1      && < 2.3,+    text          >= 1.2.3.0  && < 1.3,+    parsec        >= 3.1.13.0 && < 3.2+  exposed-modules:+    Distribution.Compat.Parsing+    Distribution.Compat.CharParsing+    Distribution.FieldGrammar+    Distribution.FieldGrammar.Class+    Distribution.FieldGrammar.FieldDescrs+    Distribution.FieldGrammar.Parsec+    Distribution.FieldGrammar.Pretty+    Distribution.PackageDescription.FieldGrammar+    Distribution.PackageDescription.Parsec+    Distribution.PackageDescription.Quirks+    Distribution.Parsec+    Distribution.Parsec.Error+    Distribution.Parsec.Newtypes+    Distribution.Parsec.Position+    Distribution.Parsec.Warning+    Distribution.Parsec.FieldLineStream+    Distribution.Fields+    Distribution.Fields.ConfVar+    Distribution.Fields.Field+    Distribution.Fields.Lexer+    Distribution.Fields.LexerMonad+    Distribution.Fields.ParseResult+    Distribution.Fields.Parser+    Distribution.Fields.Pretty++  -- Lens functionality+  exposed-modules:+    Distribution.Compat.Lens+    Distribution.Types.Lens+    Distribution.Types.Benchmark.Lens+    Distribution.Types.BuildInfo.Lens+    Distribution.Types.Executable.Lens+    Distribution.Types.ForeignLib.Lens+    Distribution.Types.GenericPackageDescription.Lens+    Distribution.Types.InstalledPackageInfo.Lens+    Distribution.Types.Library.Lens+    Distribution.Types.PackageDescription.Lens+    Distribution.Types.PackageId.Lens+    Distribution.Types.SetupBuildInfo.Lens+    Distribution.Types.SourceRepo.Lens+    Distribution.Types.TestSuite.Lens++  other-modules:+    Distribution.Backpack.PreExistingComponent+    Distribution.Backpack.ReadyComponent+    Distribution.Backpack.MixLink+    Distribution.Backpack.ModuleScope+    Distribution.Backpack.UnifyM+    Distribution.Backpack.Id+    Distribution.Utils.UnionFind+    Distribution.Utils.Base62+    Distribution.Compat.CopyFile+    Distribution.Compat.GetShortPathName+    Distribution.Compat.MonadFail+    Distribution.Compat.Prelude+    Distribution.Compat.SnocList+    Distribution.GetOpt+    Distribution.Lex+    Distribution.Utils.String+    Distribution.Simple.GHC.EnvironmentParser+    Distribution.Simple.GHC.Internal+    Distribution.Simple.GHC.ImplInfo+    Paths_Cabal++  if flag(bundled-binary-generic)+    other-modules:+      Distribution.Compat.Binary.Class+      Distribution.Compat.Binary.Generic++  default-language: Haskell2010+  other-extensions:+    BangPatterns+    CPP+    DefaultSignatures+    DeriveDataTypeable+    DeriveFoldable+    DeriveFunctor+    DeriveGeneric+    DeriveTraversable+    ExistentialQuantification+    FlexibleContexts+    FlexibleInstances+    GeneralizedNewtypeDeriving+    ImplicitParams+    KindSignatures+    NondecreasingIndentation+    OverloadedStrings+    RankNTypes+    RecordWildCards+    ScopedTypeVariables+    StandaloneDeriving+    Trustworthy+    TypeFamilies+    TypeOperators+    TypeSynonymInstances+    UndecidableInstances++  if impl(ghc >= 7.11)+    other-extensions: PatternSynonyms++-- Small, fast running tests.+test-suite unit-tests+  type: exitcode-stdio-1.0+  hs-source-dirs: tests+  other-modules:+    Test.Laws+    Test.QuickCheck.Utils+    UnitTests.Distribution.Compat.CreatePipe+    UnitTests.Distribution.Compat.Time+    UnitTests.Distribution.Compat.Graph+    UnitTests.Distribution.Simple.Glob+    UnitTests.Distribution.Simple.Program.Internal+    UnitTests.Distribution.Simple.Utils+    UnitTests.Distribution.SPDX+    UnitTests.Distribution.System+    UnitTests.Distribution.Types.GenericPackageDescription+    UnitTests.Distribution.Utils.Generic+    UnitTests.Distribution.Utils.NubList+    UnitTests.Distribution.Utils.ShortText+    UnitTests.Distribution.Version+  main-is: UnitTests.hs+  build-depends:+    array,+    base,+    bytestring,+    containers,+    directory,+    filepath,+    integer-logarithms >= 1.0.2 && <1.1,+    tasty >= 1.1.0.3 && < 1.2,+    tasty-hunit,+    tasty-quickcheck,+    tagged,+    temporary,+    text,+    pretty,+    QuickCheck >= 2.11.3 && < 2.12,+    Cabal+  ghc-options: -Wall+  default-language: Haskell2010++test-suite parser-tests+  type: exitcode-stdio-1.0+  hs-source-dirs: tests+  main-is: ParserTests.hs+  build-depends:+    base,+    base-compat >=0.10.4 && <0.11,+    bytestring,+    directory,+    filepath,+    tasty >= 1.1.0.3 && < 1.2,+    tasty-hunit,+    tasty-quickcheck,+    tasty-golden >=2.3.1.1 && <2.4,+    Diff >=0.3.4 && <0.4,+    Cabal+  ghc-options: -Wall+  default-language: Haskell2010++  if impl(ghc >= 7.8)+    build-depends:+      tree-diff      >= 0.0.1 && <0.1+    other-modules:+      Instances.TreeDiff+      Instances.TreeDiff.Language+      Instances.TreeDiff.SPDX+      Instances.TreeDiff.Version++test-suite check-tests+  type: exitcode-stdio-1.0+  hs-source-dirs: tests+  main-is: CheckTests.hs+  build-depends:+    base,+    bytestring,+    directory,+    filepath,+    tasty >= 1.1.0.3 && < 1.2,+    tasty-golden >=2.3.1.1 && <2.4,+    Diff >=0.3.4 && <0.4,+    Cabal+  ghc-options: -Wall+  default-language: Haskell2010++test-suite custom-setup-tests+  type: exitcode-stdio-1.0+  hs-source-dirs: tests/custom-setup+  main-is: CustomSetupTests.hs+  other-modules:+    CabalDoctestSetup+    IdrisSetup+  build-depends:+    Cabal,+    base,+    directory,+    filepath,+    process+  default-language: Haskell2010++test-suite hackage-tests+  type: exitcode-stdio-1.0+  main-is: HackageTests.hs++  -- TODO: need to get 01-index.tar on appveyor+  if os(windows)+    buildable: False++  hs-source-dirs: tests++  build-depends:+    base,+    Cabal,+    bytestring,+    deepseq,+    containers,+    directory,+    filepath++  build-depends:+    base-compat          >=0.10.4   && <0.11,+    base-orphans         >=0.6      && <0.9,+    optparse-applicative >=0.13.2.0 && <0.15,+    stm                  >=2.4.5.0  && <2.6,+    tar                  >=0.5.0.3  && <0.6++  if impl(ghc >= 7.8)+    build-depends:+      tree-diff      >= 0.0.1 && <0.1+    other-modules:+      Instances.TreeDiff+      Instances.TreeDiff.Language+      Instances.TreeDiff.SPDX+      Instances.TreeDiff.Version++  ghc-options: -Wall -rtsopts -threaded+  default-extensions: CPP+  default-language: Haskell2010
+ fixtures/Cabal.format view
@@ -0,0 +1,673 @@+name:               Cabal+version:            2.5.0.0+copyright:          2003-2018, Cabal Development Team (see AUTHORS file)+license:            BSD3+license-file:       LICENSE+author:             Cabal Development Team <cabal-devel@haskell.org>+maintainer:         cabal-devel@haskell.org+homepage:           http://www.haskell.org/cabal/+bug-reports:        https://github.com/haskell/cabal/issues+synopsis:           A framework for packaging Haskell software+description:+  The Haskell Common Architecture for Building Applications and+  Libraries: a framework defining a common interface for authors to more+  easily build their Haskell applications in a portable way.+  .+  The Haskell Cabal is part of a larger infrastructure for distributing,+  organizing, and cataloging Haskell libraries and tools.++category:           Distribution+cabal-version:      >=1.10+build-type:         Simple++-- If we use a new Cabal feature, this needs to be changed to Custom so+-- we can bootstrap.++extra-source-files:+  README.md+  tests/README.md+  ChangeLog.md+  doc/bugs-and-stability.rst+  doc/concepts-and-development.rst+  doc/conf.py+  doc/config-and-install.rst+  doc/developing-packages.rst+  doc/images/Cabal-dark.png+  doc/index.rst+  doc/installing-packages.rst+  doc/intro.rst+  doc/misc.rst+  doc/nix-local-build-overview.rst+  doc/nix-local-build.rst+  doc/file-format-changelog.rst+  doc/README.md+  doc/references.inc+  tests/ParserTests/errors/common1.cabal+  tests/ParserTests/errors/common1.errors+  tests/ParserTests/errors/common2.cabal+  tests/ParserTests/errors/common2.errors+  tests/ParserTests/errors/common3.cabal+  tests/ParserTests/errors/common3.errors+  tests/ParserTests/errors/forward-compat.cabal+  tests/ParserTests/errors/forward-compat.errors+  tests/ParserTests/errors/forward-compat2.cabal+  tests/ParserTests/errors/forward-compat2.errors+  tests/ParserTests/errors/forward-compat3.cabal+  tests/ParserTests/errors/forward-compat3.errors+  tests/ParserTests/errors/issue-5055-2.cabal+  tests/ParserTests/errors/issue-5055-2.errors+  tests/ParserTests/errors/issue-5055.cabal+  tests/ParserTests/errors/issue-5055.errors+  tests/ParserTests/errors/leading-comma-2.cabal+  tests/ParserTests/errors/leading-comma-2.errors+  tests/ParserTests/errors/leading-comma-2b.cabal+  tests/ParserTests/errors/leading-comma-2b.errors+  tests/ParserTests/errors/leading-comma-2c.cabal+  tests/ParserTests/errors/leading-comma-2c.errors+  tests/ParserTests/errors/leading-comma.cabal+  tests/ParserTests/errors/leading-comma.errors+  tests/ParserTests/errors/multiple-libs.cabal+  tests/ParserTests/errors/multiple-libs.errors+  tests/ParserTests/errors/noVersion.cabal+  tests/ParserTests/errors/noVersion.errors+  tests/ParserTests/errors/noVersion2.cabal+  tests/ParserTests/errors/noVersion2.errors+  tests/ParserTests/errors/range-ge-wild.cabal+  tests/ParserTests/errors/range-ge-wild.errors+  tests/ParserTests/errors/removed-fields.cabal+  tests/ParserTests/errors/removed-fields.errors+  tests/ParserTests/errors/spdx-1.cabal+  tests/ParserTests/errors/spdx-1.errors+  tests/ParserTests/errors/spdx-2.cabal+  tests/ParserTests/errors/spdx-2.errors+  tests/ParserTests/errors/spdx-3.cabal+  tests/ParserTests/errors/spdx-3.errors+  tests/ParserTests/ipi/Includes2.cabal+  tests/ParserTests/ipi/Includes2.expr+  tests/ParserTests/ipi/Includes2.format+  tests/ParserTests/ipi/internal-preprocessor-test.cabal+  tests/ParserTests/ipi/internal-preprocessor-test.expr+  tests/ParserTests/ipi/internal-preprocessor-test.format+  tests/ParserTests/ipi/issue-2276-ghc-9885.cabal+  tests/ParserTests/ipi/issue-2276-ghc-9885.expr+  tests/ParserTests/ipi/issue-2276-ghc-9885.format+  tests/ParserTests/ipi/transformers.cabal+  tests/ParserTests/ipi/transformers.expr+  tests/ParserTests/ipi/transformers.format+  tests/ParserTests/regressions/MiniAgda.cabal+  tests/ParserTests/regressions/MiniAgda.check+  tests/ParserTests/regressions/Octree-0.5.cabal+  tests/ParserTests/regressions/Octree-0.5.expr+  tests/ParserTests/regressions/Octree-0.5.format+  tests/ParserTests/regressions/bad-glob-syntax.cabal+  tests/ParserTests/regressions/bad-glob-syntax.check+  tests/ParserTests/regressions/cc-options-with-optimization.cabal+  tests/ParserTests/regressions/cc-options-with-optimization.check+  tests/ParserTests/regressions/common-conditional.cabal+  tests/ParserTests/regressions/common-conditional.expr+  tests/ParserTests/regressions/common-conditional.format+  tests/ParserTests/regressions/common.cabal+  tests/ParserTests/regressions/common.expr+  tests/ParserTests/regressions/common.format+  tests/ParserTests/regressions/common2.cabal+  tests/ParserTests/regressions/common2.expr+  tests/ParserTests/regressions/common2.format+  tests/ParserTests/regressions/cxx-options-with-optimization.cabal+  tests/ParserTests/regressions/cxx-options-with-optimization.check+  tests/ParserTests/regressions/elif.cabal+  tests/ParserTests/regressions/elif.expr+  tests/ParserTests/regressions/elif.format+  tests/ParserTests/regressions/elif2.cabal+  tests/ParserTests/regressions/elif2.expr+  tests/ParserTests/regressions/elif2.format+  tests/ParserTests/regressions/encoding-0.8.cabal+  tests/ParserTests/regressions/encoding-0.8.expr+  tests/ParserTests/regressions/encoding-0.8.format+  tests/ParserTests/regressions/extensions-paths-5054.cabal+  tests/ParserTests/regressions/extensions-paths-5054.check+  tests/ParserTests/regressions/generics-sop.cabal+  tests/ParserTests/regressions/generics-sop.expr+  tests/ParserTests/regressions/generics-sop.format+  tests/ParserTests/regressions/ghc-option-j.cabal+  tests/ParserTests/regressions/ghc-option-j.check+  tests/ParserTests/regressions/haddock-api-2.18.1-check.cabal+  tests/ParserTests/regressions/haddock-api-2.18.1-check.check+  tests/ParserTests/regressions/hidden-main-lib.cabal+  tests/ParserTests/regressions/hidden-main-lib.expr+  tests/ParserTests/regressions/hidden-main-lib.format+  tests/ParserTests/regressions/issue-5055.cabal+  tests/ParserTests/regressions/issue-5055.expr+  tests/ParserTests/regressions/issue-5055.format+  tests/ParserTests/regressions/issue-774.cabal+  tests/ParserTests/regressions/issue-774.check+  tests/ParserTests/regressions/issue-774.expr+  tests/ParserTests/regressions/issue-774.format+  tests/ParserTests/regressions/jaeger-flamegraph.cabal+  tests/ParserTests/regressions/jaeger-flamegraph.expr+  tests/ParserTests/regressions/jaeger-flamegraph.format+  tests/ParserTests/regressions/leading-comma-2.cabal+  tests/ParserTests/regressions/leading-comma-2.expr+  tests/ParserTests/regressions/leading-comma-2.format+  tests/ParserTests/regressions/leading-comma.cabal+  tests/ParserTests/regressions/leading-comma.expr+  tests/ParserTests/regressions/leading-comma.format+  tests/ParserTests/regressions/multiple-libs-2.cabal+  tests/ParserTests/regressions/multiple-libs-2.check+  tests/ParserTests/regressions/multiple-libs-2.expr+  tests/ParserTests/regressions/multiple-libs-2.format+  tests/ParserTests/regressions/noVersion.cabal+  tests/ParserTests/regressions/noVersion.expr+  tests/ParserTests/regressions/noVersion.format+  tests/ParserTests/regressions/nothing-unicode.cabal+  tests/ParserTests/regressions/nothing-unicode.check+  tests/ParserTests/regressions/nothing-unicode.expr+  tests/ParserTests/regressions/nothing-unicode.format+  tests/ParserTests/regressions/pre-1.6-glob.cabal+  tests/ParserTests/regressions/pre-1.6-glob.check+  tests/ParserTests/regressions/pre-2.4-globstar.cabal+  tests/ParserTests/regressions/pre-2.4-globstar.check+  tests/ParserTests/regressions/shake.cabal+  tests/ParserTests/regressions/shake.expr+  tests/ParserTests/regressions/shake.format+  tests/ParserTests/regressions/spdx-1.cabal+  tests/ParserTests/regressions/spdx-1.expr+  tests/ParserTests/regressions/spdx-1.format+  tests/ParserTests/regressions/spdx-2.cabal+  tests/ParserTests/regressions/spdx-2.expr+  tests/ParserTests/regressions/spdx-2.format+  tests/ParserTests/regressions/spdx-3.cabal+  tests/ParserTests/regressions/spdx-3.expr+  tests/ParserTests/regressions/spdx-3.format+  tests/ParserTests/regressions/th-lift-instances.cabal+  tests/ParserTests/regressions/th-lift-instances.expr+  tests/ParserTests/regressions/th-lift-instances.format+  tests/ParserTests/regressions/wl-pprint-indef.cabal+  tests/ParserTests/regressions/wl-pprint-indef.expr+  tests/ParserTests/regressions/wl-pprint-indef.format+  tests/ParserTests/warnings/bom.cabal+  tests/ParserTests/warnings/bool.cabal+  tests/ParserTests/warnings/deprecatedfield.cabal+  tests/ParserTests/warnings/doubledash.cabal+  tests/ParserTests/warnings/extratestmodule.cabal+  tests/ParserTests/warnings/gluedop.cabal+  tests/ParserTests/warnings/multiplesingular.cabal+  tests/ParserTests/warnings/nbsp.cabal+  tests/ParserTests/warnings/newsyntax.cabal+  tests/ParserTests/warnings/oldsyntax.cabal+  tests/ParserTests/warnings/subsection.cabal+  tests/ParserTests/warnings/tab.cabal+  tests/ParserTests/warnings/trailingfield.cabal+  tests/ParserTests/warnings/unknownfield.cabal+  tests/ParserTests/warnings/unknownsection.cabal+  tests/ParserTests/warnings/utf8.cabal+  tests/ParserTests/warnings/versiontag.cabal+  tests/hackage/check.sh+  tests/hackage/download.sh+  tests/hackage/unpack.sh+  tests/misc/ghc-supported-languages.hs++-- Generated with 'make gen-extra-source-files'+-- Do NOT edit this section manually; instead, run the script.+-- BEGIN gen-extra-source-files+-- END gen-extra-source-files++source-repository head+  type:     git+  location: https://github.com/haskell/cabal/+  subdir:   Cabal++flag bundled-binary-generic+  default: False++library+  build-depends:+      array       >=0.4.0.1  && <0.6+    , base        >=4.6      && <5+    , bytestring  >=0.10.0.0 && <0.11+    , containers  >=0.5.0.0  && <0.7+    , deepseq     >=1.3.0.1  && <1.5+    , directory   >=1.2      && <1.4+    , filepath    >=1.3.0.1  && <1.5+    , pretty      >=1.1.1    && <1.2+    , process     >=1.1.0.2  && <1.7+    , time        >=1.4.0.1  && <1.10++  if flag(bundled-binary-generic)+    build-depends: binary >=0.5.1.1 && <0.7++  else+    build-depends: binary >=0.7 && <0.9++  if os(windows)+    build-depends: Win32 >=2.3.0.0 && <2.9++  else+    build-depends: unix >=2.6.0.0 && <2.8++  ghc-options:      -Wall -fno-ignore-asserts -fwarn-tabs++  if impl(ghc >=8.0)+    ghc-options:+      -Wcompat -Wnoncanonical-monad-instances+      -Wnoncanonical-monadfail-instances++  exposed-modules:+    Distribution.Backpack+    Distribution.Backpack.ComponentsGraph+    Distribution.Backpack.Configure+    Distribution.Backpack.ConfiguredComponent+    Distribution.Backpack.DescribeUnitId+    Distribution.Backpack.FullUnitId+    Distribution.Backpack.LinkedComponent+    Distribution.Backpack.ModSubst+    Distribution.Backpack.ModuleShape+    Distribution.Backpack.PreModuleShape+    Distribution.CabalSpecVersion+    Distribution.Compat.Binary+    Distribution.Compat.CreatePipe+    Distribution.Compat.DList+    Distribution.Compat.Directory+    Distribution.Compat.Environment+    Distribution.Compat.Exception+    Distribution.Compat.Graph+    Distribution.Compat.Internal.TempFile+    Distribution.Compat.Newtype+    Distribution.Compat.Prelude.Internal+    Distribution.Compat.Semigroup+    Distribution.Compat.Stack+    Distribution.Compat.Time+    Distribution.Compiler+    Distribution.InstalledPackageInfo+    Distribution.License+    Distribution.Make+    Distribution.ModuleName+    Distribution.Package+    Distribution.PackageDescription+    Distribution.PackageDescription.Check+    Distribution.PackageDescription.Configuration+    Distribution.PackageDescription.PrettyPrint+    Distribution.PackageDescription.Utils+    Distribution.Pretty+    Distribution.ReadE+    Distribution.SPDX+    Distribution.SPDX.License+    Distribution.SPDX.LicenseExceptionId+    Distribution.SPDX.LicenseExpression+    Distribution.SPDX.LicenseId+    Distribution.SPDX.LicenseListVersion+    Distribution.SPDX.LicenseReference+    Distribution.Simple+    Distribution.Simple.Bench+    Distribution.Simple.Build+    Distribution.Simple.Build.Macros+    Distribution.Simple.Build.PathsModule+    Distribution.Simple.BuildPaths+    Distribution.Simple.BuildTarget+    Distribution.Simple.BuildToolDepends+    Distribution.Simple.CCompiler+    Distribution.Simple.Command+    Distribution.Simple.Compiler+    Distribution.Simple.Configure+    Distribution.Simple.Doctest+    Distribution.Simple.Flag+    Distribution.Simple.GHC+    Distribution.Simple.GHCJS+    Distribution.Simple.Glob+    Distribution.Simple.Haddock+    Distribution.Simple.HaskellSuite+    Distribution.Simple.Hpc+    Distribution.Simple.Install+    Distribution.Simple.InstallDirs+    Distribution.Simple.LocalBuildInfo+    Distribution.Simple.PackageIndex+    Distribution.Simple.PreProcess+    Distribution.Simple.PreProcess.Unlit+    Distribution.Simple.Program+    Distribution.Simple.Program.Ar+    Distribution.Simple.Program.Builtin+    Distribution.Simple.Program.Db+    Distribution.Simple.Program.Find+    Distribution.Simple.Program.GHC+    Distribution.Simple.Program.HcPkg+    Distribution.Simple.Program.Hpc+    Distribution.Simple.Program.Internal+    Distribution.Simple.Program.Ld+    Distribution.Simple.Program.ResponseFile+    Distribution.Simple.Program.Run+    Distribution.Simple.Program.Script+    Distribution.Simple.Program.Strip+    Distribution.Simple.Program.Types+    Distribution.Simple.Register+    Distribution.Simple.Setup+    Distribution.Simple.SrcDist+    Distribution.Simple.Test+    Distribution.Simple.Test.ExeV10+    Distribution.Simple.Test.LibV09+    Distribution.Simple.Test.Log+    Distribution.Simple.UHC+    Distribution.Simple.UserHooks+    Distribution.Simple.Utils+    Distribution.System+    Distribution.TestSuite+    Distribution.Text+    Distribution.Types.AbiDependency+    Distribution.Types.AbiHash+    Distribution.Types.AnnotatedId+    Distribution.Types.Benchmark+    Distribution.Types.BenchmarkInterface+    Distribution.Types.BenchmarkType+    Distribution.Types.BuildInfo+    Distribution.Types.BuildType+    Distribution.Types.Component+    Distribution.Types.ComponentId+    Distribution.Types.ComponentInclude+    Distribution.Types.ComponentLocalBuildInfo+    Distribution.Types.ComponentName+    Distribution.Types.ComponentRequestedSpec+    Distribution.Types.CondTree+    Distribution.Types.Condition+    Distribution.Types.Dependency+    Distribution.Types.DependencyMap+    Distribution.Types.ExeDependency+    Distribution.Types.Executable+    Distribution.Types.ExecutableScope+    Distribution.Types.ExposedModule+    Distribution.Types.ForeignLib+    Distribution.Types.ForeignLibOption+    Distribution.Types.ForeignLibType+    Distribution.Types.GenericPackageDescription+    Distribution.Types.GivenComponent+    Distribution.Types.HookedBuildInfo+    Distribution.Types.IncludeRenaming+    Distribution.Types.InstalledPackageInfo+    Distribution.Types.InstalledPackageInfo.FieldGrammar+    Distribution.Types.LegacyExeDependency+    Distribution.Types.Library+    Distribution.Types.LibraryName+    Distribution.Types.LibraryVisibility+    Distribution.Types.LocalBuildInfo+    Distribution.Types.Mixin+    Distribution.Types.Module+    Distribution.Types.ModuleReexport+    Distribution.Types.ModuleRenaming+    Distribution.Types.MungedPackageId+    Distribution.Types.MungedPackageName+    Distribution.Types.PackageDescription+    Distribution.Types.PackageId+    Distribution.Types.PackageName+    Distribution.Types.PackageVersionConstraint+    Distribution.Types.PkgconfigDependency+    Distribution.Types.PkgconfigName+    Distribution.Types.SetupBuildInfo+    Distribution.Types.SourceRepo+    Distribution.Types.TargetInfo+    Distribution.Types.TestSuite+    Distribution.Types.TestSuiteInterface+    Distribution.Types.TestType+    Distribution.Types.UnitId+    Distribution.Types.UnqualComponentName+    Distribution.Types.Version+    Distribution.Types.VersionInterval+    Distribution.Types.VersionRange+    Distribution.Utils.Generic+    Distribution.Utils.IOData+    Distribution.Utils.LogProgress+    Distribution.Utils.MapAccum+    Distribution.Utils.NubList+    Distribution.Utils.Progress+    Distribution.Utils.ShortText+    Distribution.Verbosity+    Distribution.Version+    Language.Haskell.Extension++  -- Parsec parser-related modules+  build-depends:+      mtl           >=2.1      && <2.3+    , parsec        >=3.1.13.0 && <3.2+    , text          >=1.2.3.0  && <1.3+    , transformers  >=0.3      && <0.4 || >=0.4.1.0 && <0.6++  -- transformers-0.4.0.0 doesn't have record syntax e.g. for Identity+  -- See also https://github.com/ekmett/transformers-compat/issues/35+  exposed-modules:+    Distribution.Compat.CharParsing+    Distribution.Compat.Parsing+    Distribution.FieldGrammar+    Distribution.FieldGrammar.Class+    Distribution.FieldGrammar.FieldDescrs+    Distribution.FieldGrammar.Parsec+    Distribution.FieldGrammar.Pretty+    Distribution.Fields+    Distribution.Fields.ConfVar+    Distribution.Fields.Field+    Distribution.Fields.Lexer+    Distribution.Fields.LexerMonad+    Distribution.Fields.ParseResult+    Distribution.Fields.Parser+    Distribution.Fields.Pretty+    Distribution.PackageDescription.FieldGrammar+    Distribution.PackageDescription.Parsec+    Distribution.PackageDescription.Quirks+    Distribution.Parsec+    Distribution.Parsec.Error+    Distribution.Parsec.FieldLineStream+    Distribution.Parsec.Newtypes+    Distribution.Parsec.Position+    Distribution.Parsec.Warning++  -- Lens functionality+  exposed-modules:+    Distribution.Compat.Lens+    Distribution.Types.Benchmark.Lens+    Distribution.Types.BuildInfo.Lens+    Distribution.Types.Executable.Lens+    Distribution.Types.ForeignLib.Lens+    Distribution.Types.GenericPackageDescription.Lens+    Distribution.Types.InstalledPackageInfo.Lens+    Distribution.Types.Lens+    Distribution.Types.Library.Lens+    Distribution.Types.PackageDescription.Lens+    Distribution.Types.PackageId.Lens+    Distribution.Types.SetupBuildInfo.Lens+    Distribution.Types.SourceRepo.Lens+    Distribution.Types.TestSuite.Lens++  other-modules:+    Distribution.Backpack.Id+    Distribution.Backpack.MixLink+    Distribution.Backpack.ModuleScope+    Distribution.Backpack.PreExistingComponent+    Distribution.Backpack.ReadyComponent+    Distribution.Backpack.UnifyM+    Distribution.Compat.CopyFile+    Distribution.Compat.GetShortPathName+    Distribution.Compat.MonadFail+    Distribution.Compat.Prelude+    Distribution.Compat.SnocList+    Distribution.GetOpt+    Distribution.Lex+    Distribution.Simple.GHC.EnvironmentParser+    Distribution.Simple.GHC.ImplInfo+    Distribution.Simple.GHC.Internal+    Distribution.Utils.Base62+    Distribution.Utils.String+    Distribution.Utils.UnionFind+    Paths_Cabal++  if flag(bundled-binary-generic)+    other-modules:+      Distribution.Compat.Binary.Class+      Distribution.Compat.Binary.Generic++  default-language: Haskell2010+  other-extensions:+    BangPatterns+    CPP+    DefaultSignatures+    DeriveDataTypeable+    DeriveFoldable+    DeriveFunctor+    DeriveGeneric+    DeriveTraversable+    ExistentialQuantification+    FlexibleContexts+    FlexibleInstances+    GeneralizedNewtypeDeriving+    ImplicitParams+    KindSignatures+    NondecreasingIndentation+    OverloadedStrings+    RankNTypes+    RecordWildCards+    ScopedTypeVariables+    StandaloneDeriving+    Trustworthy+    TypeFamilies+    TypeOperators+    TypeSynonymInstances+    UndecidableInstances++  if impl(ghc >=7.11)+    other-extensions: PatternSynonyms++-- Small, fast running tests.+test-suite unit-tests+  type:             exitcode-stdio-1.0+  hs-source-dirs:   tests+  other-modules:+    Test.Laws+    Test.QuickCheck.Utils+    UnitTests.Distribution.Compat.CreatePipe+    UnitTests.Distribution.Compat.Graph+    UnitTests.Distribution.Compat.Time+    UnitTests.Distribution.SPDX+    UnitTests.Distribution.Simple.Glob+    UnitTests.Distribution.Simple.Program.Internal+    UnitTests.Distribution.Simple.Utils+    UnitTests.Distribution.System+    UnitTests.Distribution.Types.GenericPackageDescription+    UnitTests.Distribution.Utils.Generic+    UnitTests.Distribution.Utils.NubList+    UnitTests.Distribution.Utils.ShortText+    UnitTests.Distribution.Version++  main-is:          UnitTests.hs+  build-depends:+      array+    , base+    , bytestring+    , Cabal+    , containers+    , directory+    , filepath+    , integer-logarithms  >=1.0.2   && <1.1+    , pretty+    , QuickCheck          >=2.11.3  && <2.12+    , tagged+    , tasty               >=1.1.0.3 && <1.2+    , tasty-hunit+    , tasty-quickcheck+    , temporary+    , text++  ghc-options:      -Wall+  default-language: Haskell2010++test-suite parser-tests+  type:             exitcode-stdio-1.0+  hs-source-dirs:   tests+  main-is:          ParserTests.hs+  build-depends:+      base+    , base-compat       >=0.10.4  && <0.11+    , bytestring+    , Cabal+    , Diff              >=0.3.4   && <0.4+    , directory+    , filepath+    , tasty             >=1.1.0.3 && <1.2+    , tasty-golden      >=2.3.1.1 && <2.4+    , tasty-hunit+    , tasty-quickcheck++  ghc-options:      -Wall+  default-language: Haskell2010++  if impl(ghc >=7.8)+    build-depends: tree-diff >=0.0.1 && <0.1+    other-modules:+      Instances.TreeDiff+      Instances.TreeDiff.Language+      Instances.TreeDiff.SPDX+      Instances.TreeDiff.Version++test-suite check-tests+  type:             exitcode-stdio-1.0+  hs-source-dirs:   tests+  main-is:          CheckTests.hs+  build-depends:+      base+    , bytestring+    , Cabal+    , Diff          >=0.3.4   && <0.4+    , directory+    , filepath+    , tasty         >=1.1.0.3 && <1.2+    , tasty-golden  >=2.3.1.1 && <2.4++  ghc-options:      -Wall+  default-language: Haskell2010++test-suite custom-setup-tests+  type:             exitcode-stdio-1.0+  hs-source-dirs:   tests/custom-setup+  main-is:          CustomSetupTests.hs+  other-modules:+    CabalDoctestSetup+    IdrisSetup++  build-depends:+      base+    , Cabal+    , directory+    , filepath+    , process++  default-language: Haskell2010++test-suite hackage-tests+  type:               exitcode-stdio-1.0+  main-is:            HackageTests.hs++  -- TODO: need to get 01-index.tar on appveyor+  if os(windows)+    buildable: False++  hs-source-dirs:     tests+  build-depends:+      base+    , bytestring+    , Cabal+    , containers+    , deepseq+    , directory+    , filepath++  build-depends:+      base-compat           >=0.10.4   && <0.11+    , base-orphans          >=0.6      && <0.9+    , optparse-applicative  >=0.13.2.0 && <0.15+    , stm                   >=2.4.5.0  && <2.6+    , tar                   >=0.5.0.3  && <0.6++  if impl(ghc >=7.8)+    build-depends: tree-diff >=0.0.1 && <0.1+    other-modules:+      Instances.TreeDiff+      Instances.TreeDiff.Language+      Instances.TreeDiff.SPDX+      Instances.TreeDiff.Version++  ghc-options:        -Wall -rtsopts -threaded+  default-extensions: CPP+  default-language:   Haskell2010
+ fixtures/cabal-fmt.cabal view
@@ -0,0 +1,16 @@+cabal-version: 2.4+name: cabal-fmt+version: 0++-- An example formatter+executable cabal-fmt+    default-language: Haskell2010+    hs-source-dirs: src +    main-is: CabalFmt.hs+    -- build depends will be in+    -- a nice tabular format+    build-depends: base >=4.11 && <4.13, pretty >=1.1.3.6 && <1.2, bytestring, Cabal ^>=2.5, containers ^>=0.5.11.0 || ^>=0.6.0.1+    -- extensions will be sorted+    other-extensions:+      DeriveFunctor FlexibleContexts ExistentialQuantification OverloadedStrings+      RankNTypes
+ fixtures/cabal-fmt.format view
@@ -0,0 +1,26 @@+cabal-version: 2.4+name:          cabal-fmt+version:       0++-- An example formatter+executable cabal-fmt+  default-language: Haskell2010+  hs-source-dirs:   src+  main-is:          CabalFmt.hs++  -- build depends will be in+  -- a nice tabular format+  build-depends:+    , base        >=4.11     && <4.13+    , bytestring+    , Cabal       ^>=2.5+    , containers  ^>=0.5.11.0 || ^>=0.6.0.1+    , pretty      ^>=1.1.3.6++  -- extensions will be sorted+  other-extensions:+    DeriveFunctor+    ExistentialQuantification+    FlexibleContexts+    OverloadedStrings+    RankNTypes
+ fixtures/simple-example.cabal view
@@ -0,0 +1,51 @@+name:                simple-example+version:             1+synopsis:            Simple example of cabal-doctest demonstrating a library+                     with doctests+description:         A package skeleton, to demostrate the use of cabal-doctest+homepage:            https://github.com/phadej/cabal-doctest+license:             BSD3+license-file:        LICENSE+author:              Oleg Grenrus <oleg.grenrus@iki.fi>+maintainer:          Oleg Grenrus <oleg.grenrus@iki.fi>+copyright:           (c) 2017 Oleg Grenrus+category:            Example+build-type:          Custom+cabal-version:       1.12++tested-with:+  GHC==7.0.4,+  GHC==7.2.2,+  GHC==7.4.2,+  GHC==7.6.3,+  GHC==7.8.4,+  GHC==7.10.3,+  GHC==8.0.2,+  GHC==8.2.2,+  GHC==8.4.4,+  GHC==8.6.3++custom-setup+  setup-depends:+    base, Cabal, cabal-doctest >=1.0.6 && <1.1++library+  exposed-modules:     Example+  default-extensions:  ScopedTypeVariables RankNTypes+  build-depends:       base >=4.3 && <4.13+  hs-source-dirs:      src+  default-language:    Haskell2010++test-suite doctests+  type:                exitcode-stdio-1.0+  main-is:             doctests.hs+  build-depends:+    base,+    doctest >= 0.15 && <0.17,+    QuickCheck ==2.12.*,+    simple-example,+    template-haskell++  ghc-options:         -Wall -threaded+  hs-source-dirs:      tests+  default-language:    Haskell2010
+ fixtures/simple-example.format view
@@ -0,0 +1,48 @@+name:          simple-example+version:       1+synopsis:+  Simple example of cabal-doctest demonstrating a library+  with doctests++description:   A package skeleton, to demostrate the use of cabal-doctest+homepage:      https://github.com/phadej/cabal-doctest+license:       BSD3+license-file:  LICENSE+author:        Oleg Grenrus <oleg.grenrus@iki.fi>+maintainer:    Oleg Grenrus <oleg.grenrus@iki.fi>+copyright:     (c) 2017 Oleg Grenrus+category:      Example+build-type:    Custom+cabal-version: 1.12+tested-with:+  GHC ==8.6.3 || ==8.4.4 || ==8.2.2 || ==8.0.2 || ==7.10.3 || ==7.8.4 || ==7.6.3 || ==7.4.2 || ==7.2.2 || ==7.0.4++custom-setup+  setup-depends:+      base+    , Cabal+    , cabal-doctest  >=1.0.6 && <1.1++library+  exposed-modules:    Example+  default-extensions:+    RankNTypes+    ScopedTypeVariables++  build-depends:      base >=4.3 && <4.13+  hs-source-dirs:     src+  default-language:   Haskell2010++test-suite doctests+  type:             exitcode-stdio-1.0+  main-is:          doctests.hs+  build-depends:+      base+    , doctest           >=0.15 && <0.17+    , QuickCheck        >=2.12 && <2.13+    , simple-example+    , template-haskell++  ghc-options:      -Wall -threaded+  hs-source-dirs:   tests+  default-language: Haskell2010
+ src/CabalFmt.hs view
@@ -0,0 +1,137 @@+{-# LANGUAGE FlexibleContexts  #-}+{-# LANGUAGE OverloadedStrings #-}+-- | This is a demo application of how you can make Cabal-like+-- file formatter.+--+module CabalFmt (cabalFmt) where++import Control.Monad        (join)+import Control.Monad.Except (catchError)+import Control.Monad.Reader (asks, local)+import Data.Maybe           (fromMaybe)++import qualified Data.ByteString                              as BS+import qualified Distribution.CabalSpecVersion                as C+import qualified Distribution.FieldGrammar.Parsec             as C+import qualified Distribution.Fields                          as C+import qualified Distribution.Fields.ConfVar                  as C+import qualified Distribution.Fields.Pretty                   as C+import qualified Distribution.PackageDescription.FieldGrammar as C+import qualified Distribution.Parsec                          as C+import qualified Distribution.Pretty                          as C+import qualified Distribution.Simple.Utils                    as C+import qualified Distribution.Types.Condition                 as C+import qualified Distribution.Types.GenericPackageDescription as C+import qualified Distribution.Types.PackageDescription        as C+import qualified Distribution.Types.Version                   as C+import qualified Text.PrettyPrint                             as PP++import CabalFmt.Comments+import CabalFmt.Fields+import CabalFmt.Fields.BuildDepends+import CabalFmt.Fields.Extensions+import CabalFmt.Fields.Modules+import CabalFmt.Fields.TestedWith+import CabalFmt.Refactoring+import CabalFmt.Monad+import CabalFmt.Options+import CabalFmt.Parser++-------------------------------------------------------------------------------+-- Main+-------------------------------------------------------------------------------++cabalFmt :: FilePath -> BS.ByteString -> CabalFmt String+cabalFmt filepath contents = do+    opts         <- asks id+    indentWith   <- asks optIndent+    gpd          <- parseGpd filepath contents+    inputFields' <- parseFields contents+    let inputFields = foldr (\r f -> r opts f) (attachComments contents inputFields') refactorings ++    let v = C.cabalSpecFromVersionDigits+          $ C.versionNumbers+          $ C.specVersion+          $ C.packageDescription gpd++    local (\o -> o { optSpecVersion = v }) $ do++        outputPrettyFields <- C.genericFromParsecFields+            prettyFieldLines+            prettySectionArgs+            inputFields++        return $ C.showFields' fromComments indentWith outputPrettyFields++fromComments :: Comments -> [String]+fromComments (Comments bss) = map C.fromUTF8BS bss++-------------------------------------------------------------------------------+-- Refactorings+-------------------------------------------------------------------------------++refactorings :: [Refactoring]+refactorings =+    [ refactoringExpandExposedModules+    ]++-------------------------------------------------------------------------------+-- Field prettyfying+-------------------------------------------------------------------------------++prettyFieldLines :: C.FieldName -> [C.FieldLine ann] -> CabalFmt PP.Doc+prettyFieldLines fn fls =+    fromMaybe (C.prettyFieldLines fn fls) <$> knownField fn fls++knownField :: C.FieldName -> [C.FieldLine ann] -> CabalFmt (Maybe PP.Doc)+knownField fn fls = do+    v <- asks optSpecVersion+    return $ join $ fieldDescrLookup (fieldDescrs v) fn $ \p pp ->+        case C.runParsecParser' v p "<input>" (C.fieldLinesToStream fls) of+            Right x -> Just (pp x)+            Left _  -> Nothing++fieldDescrs :: C.CabalSpecVersion -> FieldDescrs () ()+fieldDescrs v+    =  buildDependsF v+    <> setupDependsF v+    <> defaultExtensionsF+    <> otherExtensionsF+    <> exposedModulesF+    <> otherModulesF+    <> testedWithF+    <> coerceFieldDescrs C.packageDescriptionFieldGrammar+    <> coerceFieldDescrs C.buildInfoFieldGrammar++-------------------------------------------------------------------------------+-- Sections+-------------------------------------------------------------------------------++prettySectionArgs :: C.FieldName -> [C.SectionArg ann] -> CabalFmt [PP.Doc]+prettySectionArgs x args =+    prettySectionArgs' x args `catchError` \_ ->+        return (C.prettySectionArgs x args)++prettySectionArgs' :: a -> [C.SectionArg ann] -> CabalFmt [PP.Doc]+prettySectionArgs' _ args = do+    c <- runParseResult "<args>" "" $ C.parseConditionConfVar (map (C.zeroPos <$) args)+    return [ppCondition c]++-------------------------------------------------------------------------------+-- PrettyPrint condition+-------------------------------------------------------------------------------++-- This is originally from Cabal++ppCondition :: C.Condition C.ConfVar -> PP.Doc+ppCondition (C.Var x)      = ppConfVar x+ppCondition (C.Lit b)      = PP.text (show b)+ppCondition (C.CNot c)     = PP.char '!' PP.<> ppCondition c+ppCondition (C.COr c1 c2)  = PP.parens (PP.hsep [ppCondition c1, PP.text "||", ppCondition c2])+ppCondition (C.CAnd c1 c2) = PP.parens (PP.hsep [ppCondition c1, PP.text "&&", ppCondition c2])++ppConfVar :: C.ConfVar -> PP.Doc+ppConfVar (C.OS os)     = PP.text "os"   PP.<> PP.parens (C.pretty os)+ppConfVar (C.Arch arch) = PP.text "arch" PP.<> PP.parens (C.pretty arch)+ppConfVar (C.Flag name) = PP.text "flag" PP.<> PP.parens (C.pretty name)+ppConfVar (C.Impl c v)  = PP.text "impl" PP.<> PP.parens (C.pretty c PP.<+> C.pretty v)
+ src/CabalFmt/Comments.hs view
@@ -0,0 +1,127 @@+{-# LANGUAGE BangPatterns               #-}+{-# LANGUAGE DerivingStrategies         #-}+{-# LANGUAGE GeneralizedNewtypeDeriving #-}+{-# LANGUAGE OverloadedStrings          #-}+{-# LANGUAGE ScopedTypeVariables        #-}+module CabalFmt.Comments where++import Data.Foldable (toList)+import Data.Maybe    (fromMaybe)++import qualified Data.ByteString           as BS+import qualified Data.ByteString.Char8     as BS8+import qualified Data.Map.Strict           as Map+import qualified Distribution.Fields       as C+import qualified Distribution.Fields.Field as C+import qualified Distribution.Parsec       as C++-------------------------------------------------------------------------------+-- Comments wrapper+-------------------------------------------------------------------------------++newtype Comments = Comments [BS.ByteString]+  deriving stock Show+  deriving newtype (Semigroup, Monoid)++-------------------------------------------------------------------------------+-- Attach comments+-------------------------------------------------------------------------------++attachComments+    :: BS.ByteString        -- ^ source with comments+    -> [C.Field C.Position] -- ^ parsed source fields+    -> [C.Field Comments]+attachComments input inputFields = overAnn attach inputFields where+    inputFieldsU :: [(FieldPath, C.Field C.Position)]+    inputFieldsU = fieldUniverseN inputFields++    comments :: [(Int, Comments)]+    comments = extractComments input++    -- todo: warning when comments are omitted+    comments' :: Map.Map FieldPath Comments+    comments' = Map.fromListWith (flip (<>))+        [ (path, cs)+        | (l, cs) <- comments+        , path <- toList (findPath C.fieldAnn l inputFieldsU)+        ]++    attach :: FieldPath -> C.Position -> Comments+    attach fp _pos = fromMaybe mempty (Map.lookup fp comments')++overAnn :: forall a b. (FieldPath -> a -> b) -> [C.Field a] -> [C.Field b]+overAnn f = go' id where+    go :: (FieldPath -> FieldPath) -> Int -> C.Field a -> C.Field b+    go g i (C.Field (C.Name a name) fls) =+        C.Field (C.Name b name) (b <$$ fls)+      where+        b = f (g (Nth i End)) a++    go g i (C.Section (C.Name a name) args fls) =+        C.Section (C.Name b name) (b <$$ args) (go' (g . Nth i) fls)+      where+        b = f (g (Nth i End)) a++    go' :: (FieldPath -> FieldPath) -> [C.Field a] -> [C.Field b]+    go' g xs = zipWith (go g) [0..] xs++    (<$$) :: (Functor f, Functor g) => x -> f (g y) -> f (g x)+    x <$$ y = (x <$) <$> y++-------------------------------------------------------------------------------+-- Find comments in the input+-------------------------------------------------------------------------------++extractComments :: BS.ByteString -> [(Int, Comments)]+extractComments = go . zip [1..] . map (BS.dropWhile isSpace8) . BS8.lines where+    go :: [(Int, BS.ByteString)] -> [(Int, Comments)]+    go [] = []+    go ((n, bs) : rest)+        | isComment bs = case span ((isComment .|| BS.null) . snd) rest of+            (h,t) -> (n, Comments $ bs : map snd h) : go t+        | otherwise = go rest++    (f .|| g) x = f x || g x++    isSpace8 w = w == 9 || w == 32++    isComment :: BS.ByteString -> Bool+    isComment = BS.isPrefixOf "--"++-------------------------------------------------------------------------------+-- FieldPath+-------------------------------------------------------------------------------++-- | Paths input paths. Essentially a list of offsets. Own type ofr safety.+data FieldPath+    = End+    | Nth Int FieldPath -- nth field+  deriving (Eq, Ord, Show)++fieldPathSize :: FieldPath -> Int+fieldPathSize = go 0 where+    go !acc End = acc+    go !acc (Nth _ fp) = go (succ acc) fp++fieldUniverseN :: [C.Field ann] -> [(FieldPath, C.Field ann)]+fieldUniverseN = concat . zipWith g [0..] where+    g n f' = [ (Nth n p, f'') | (p, f'') <- fieldUniverse f' ]++fieldUniverse :: C.Field ann -> [(FieldPath, C.Field ann)]+fieldUniverse f@(C.Section _ _ fs) = (End,f) : concat (zipWith g [0..] fs) where+    g n f' = [ (Nth n p, f'') | (p, f'') <- fieldUniverse f' ]+fieldUniverse f@(C.Field _ _)      = [(End, f)]++-- note: fieldUniverse* should produce 'FieldPath's in increasing order+-- that helps+findPath :: (a -> C.Position) -> Int -> [(FieldPath, a)] -> Maybe FieldPath+findPath _ _ [] = Nothing+findPath f l [(p, x)]+    | C.Position k _ <- f x =+        if l < k then Just p else Nothing+findPath f l ((_, x) : rest@((p, x') : _))+    | C.Position k  _ <- f x+    , C.Position k' _ <- f x' =+        if k < l && l < k'+        then Just p+        else findPath f l rest
+ src/CabalFmt/Error.hs view
@@ -0,0 +1,115 @@+module CabalFmt.Error (Error (..), renderError) where++import System.FilePath   (normalise)+import Text.Parsec.Error (ParseError)++import qualified Data.ByteString            as BS+import qualified Data.ByteString.Char8      as BS8+import qualified Distribution.Parsec        as C+import qualified Distribution.Simple.Utils  as C (fromUTF8BS)+import qualified Distribution.Types.Version as C++data Error+    = SomeError String+    | CabalParseError FilePath BS.ByteString [C.PError] (Maybe C.Version) [C.PWarning]+    | PanicCannotParseInput  ParseError+  deriving (Show)++renderError :: Error -> IO ()+renderError (SomeError err) = putStrLn $ "error: " ++ err+renderError (PanicCannotParseInput err) = putStrLn $ "panic! " ++ show err+renderError (CabalParseError filepath contents errors _ warnings) = +    putStr $ renderParseError filepath contents errors warnings++-------------------------------------------------------------------------------+-- Rendering of Cabal parser error+-------------------------------------------------------------------------------++-- | Render parse error highlighting the part of the input file.+renderParseError+    :: FilePath+    -> BS.ByteString+    -> [C.PError]+    -> [C.PWarning]+    -> String+renderParseError filepath contents errors warnings = unlines $+    [ "Errors encountered when parsing cabal file " <> filepath <> ":"+    ]+    ++ renderedErrors+    ++ renderedWarnings+  where+    filepath' = normalise filepath++    -- lines of the input file. 'lines' is taken, so they are called rows+    -- contents, line number, whether it's empty line+    rows :: [(String, Int, Bool)]+    rows = zipWith f (BS8.lines contents) [1..] where+        f bs i = let s = C.fromUTF8BS bs in (s, i, isEmptyOrComment s)++    rowsZipper = listToZipper rows++    isEmptyOrComment :: String -> Bool+    isEmptyOrComment s = case dropWhile (== ' ') s of+        ""          -> True   -- empty+        ('-':'-':_) -> True   -- comment+        _           -> False++    renderedErrors   = concatMap renderError' errors+    renderedWarnings = concatMap renderWarning warnings++    renderError' :: C.PError -> [String]+    renderError' (C.PError pos@(C.Position row col) msg)+        -- if position is 0:0, then it doesn't make sense to show input+        -- looks like, Parsec errors have line-feed in them+        | pos == C.zeroPos = msgs+        | otherwise        = msgs ++ formatInput row col+      where+        msgs = [ "", filepath' ++ ":" ++ C.showPos pos ++ ": error:", trimLF msg, "" ]++    renderWarning :: C.PWarning -> [String]+    renderWarning (C.PWarning _ pos@(C.Position row col) msg)+        | pos == C.zeroPos = msgs+        | otherwise        = msgs ++ formatInput row col+      where+        msgs = [ "", filepath' ++ ":" ++ C.showPos pos ++ ": warning:", trimLF msg, "" ]++    -- sometimes there are (especially trailing) newlines.+    trimLF :: String -> String+    trimLF = dropWhile (== '\n') . reverse . dropWhile (== '\n') . reverse++    -- format line: prepend the given line number+    formatInput :: Int -> Int -> [String]+    formatInput row col = case advance (row - 1) rowsZipper of+        Zipper xs ys -> before ++ after where+            before = case span (\(_, _, b) -> b) xs of+                (_, [])     -> []+                (zs, z : _) -> map formatInputLine $ z : reverse zs++            after  = case ys of+                []        -> []+                (z : _zs) ->+                    [ formatInputLine z                             -- error line+                    , "      | " ++ replicate (col - 1) ' ' ++ "^"  -- pointer: ^+                    ]+                    -- do we need rows after?+                    -- ++ map formatInputLine (take 1 zs)           -- one row after++    formatInputLine :: (String, Int, Bool) -> String+    formatInputLine (str, row, _) = leftPadShow row ++ " | " ++ str++    -- hopefully we don't need to work with over 99999 lines .cabal files+    -- at that point small glitches in error messages are hopefully fine.+    leftPadShow :: Int -> String+    leftPadShow n = let s = show n in replicate (5 - length s) ' ' ++ s++data Zipper a = Zipper [a] [a]++listToZipper :: [a] -> Zipper a+listToZipper = Zipper []++advance :: Int -> Zipper a -> Zipper a+advance n z@(Zipper xs ys)+    | n <= 0 = z+    | otherwise = case ys of+        []      -> z+        (y:ys') -> advance (n - 1) $ Zipper (y:xs) ys'
+ src/CabalFmt/Fields.hs view
@@ -0,0 +1,100 @@+{-# LANGUAGE DeriveFunctor             #-}+{-# LANGUAGE ExistentialQuantification #-}+{-# LANGUAGE RankNTypes                #-}+module CabalFmt.Fields (+    FieldDescrs,+    fieldDescrLookup,+    coerceFieldDescrs,+    singletonF,+    ) where++import Distribution.Compat.Newtype++import qualified Data.Map.Strict           as Map+import qualified Distribution.FieldGrammar as C+import qualified Distribution.Fields.Field as C+import qualified Distribution.Parsec       as C+import qualified Distribution.Pretty       as C+import qualified Distribution.Compat.CharParsing as C+import qualified Text.PrettyPrint          as PP++-------------------------------------------------------------------------------+-- FieldDescr variant+-------------------------------------------------------------------------------++-- strict pair+data SP = forall f. SP+    { _pPretty :: !(f -> PP.Doc)+    , _pParse  :: !(forall m. C.CabalParsing m => m f)+    }++-- | Lookup both pretty-printer and value parser.+--+-- As the value of the field is unknown, we have to work with it universally.+--+fieldDescrLookup+    :: C.CabalParsing m+    => FieldDescrs s a+    -> C.FieldName+    -> (forall f. m f -> (f -> PP.Doc) -> r)+    -> Maybe r+fieldDescrLookup (F m) fn kont = kont' <$> Map.lookup fn m where+    kont' (SP a b) = kont b a++-- | A collection field parsers and pretty-printers.+newtype FieldDescrs s a = F { runF :: Map.Map C.FieldName SP }+  deriving (Functor)++coerceFieldDescrs :: FieldDescrs s a -> FieldDescrs () ()+coerceFieldDescrs (F a) = F a++instance Semigroup (FieldDescrs s a) where+    F a <> F b = F (a <> b)++instance Applicative (FieldDescrs s) where+    pure _  = F mempty+    f <*> x = F (mappend (runF f) (runF x))++singletonF+    :: C.FieldName+    -> (f -> PP.Doc)+    -> (forall m. C.CabalParsing m => m f)+    -> FieldDescrs s a+singletonF fn f g = F $ Map.singleton fn (SP f g)++instance C.FieldGrammar FieldDescrs where+    blurFieldGrammar _ (F m) = F m++    booleanFieldDef fn _ _def = singletonF fn f C.parsec where+        f :: Bool -> PP.Doc+        f s = PP.text (show s)++    uniqueFieldAla fn _pack _ =+        singletonF fn (C.pretty . pack' _pack) (unpack' _pack <$> C.parsec)++    optionalFieldAla fn _pack _ =+        singletonF fn (C.pretty . pack' _pack) (unpack' _pack <$> C.parsec)++    optionalFieldDefAla fn _pack _ def =+        singletonF fn f (unpack' _pack <$> C.parsec)+      where+        f s | s == def  = PP.empty+            | otherwise = C.pretty (pack' _pack s)++    monoidalFieldAla fn _pack _ =+        singletonF fn (C.pretty . pack' _pack) (unpack' _pack <$> C.parsec)++    freeTextField fn _ = singletonF fn+        PP.text+        (C.munch $ const True)++    freeTextFieldDef fn _ = singletonF fn+        PP.text+        (C.munch $ const True)++    prefixedFields _fnPfx _l = F mempty+    knownField _           = pure ()+    deprecatedSince _  _ x = x+    removedIn _ _ x        = x+    availableSince _ _     = id+    hiddenField _          = F mempty
+ src/CabalFmt/Fields/BuildDepends.hs view
@@ -0,0 +1,124 @@+{-# LANGUAGE OverloadedStrings #-}+module CabalFmt.Fields.BuildDepends (+    buildDependsF,+    setupDependsF,+    ) where++import Control.Arrow               ((&&&))+import Data.Char                   (toLower)+import Data.List                   (sortOn)+import Distribution.Compat.Newtype++import qualified Distribution.CabalSpecVersion      as C+import qualified Distribution.Parsec                as C+import qualified Distribution.Parsec.Newtypes       as C+import qualified Distribution.Pretty                as C+import qualified Distribution.Types.Dependency      as C+import qualified Distribution.Types.DependencyMap   as C+import qualified Distribution.Types.PackageName     as C+import qualified Distribution.Types.Version         as C+import qualified Distribution.Types.VersionInterval as C+import qualified Distribution.Types.VersionRange    as C+import qualified Text.PrettyPrint                   as PP++import CabalFmt.Fields++setupDependsF :: C.CabalSpecVersion -> FieldDescrs () ()+setupDependsF v = singletonF "setup-depends" (pretty v) parse++buildDependsF :: C.CabalSpecVersion -> FieldDescrs () ()+buildDependsF v = singletonF "build-depends" (pretty v) parse++parse :: C.CabalParsing m => m [C.Dependency]+parse = unpack' (C.alaList C.CommaVCat) <$> C.parsec++pretty :: C.CabalSpecVersion -> [C.Dependency] -> PP.Doc+pretty v deps = case deps of+    [] -> PP.empty+    [dep] -> C.pretty (C.depPkgName dep) PP.<+> prettyVR vr'+      where+        vr' = either (C.fromVersionIntervals . C.mkVersionIntervals) id+            $ norm (C.asVersionIntervals $ C.depVerRange dep)+        prettyVR vr | vr == C.anyVersion = PP.empty+                    | otherwise          = C.pretty vr+    _ -> PP.vcat (zipWith pretty' (True : repeat False) deps')+      where+        deps' = sortOn (map toLower . fst)+              $ map (C.unPackageName . C.depPkgName &&& C.asVersionIntervals . C.depVerRange)+              $ C.fromDepMap . C.toDepMap -- this combines duplicate packages+              $ deps++        width = maximum (0 : map (length . fst) deps') + 1+        width' = maximum (0 : map (firstComponent . snd) deps')++        -- we assume cabal-version: 2.2 or higher+        pretty' :: Bool -> (String, [C.VersionInterval]) -> PP.Doc+        pretty' isFirst (name, vis)+            | empty vis = comma PP.<+> PP.text name+            | otherwise = case norm vis of+                Left [] -> comma PP.<+> PP.text name+                Left (vi : vis') ->+                    comma PP.<+>+                    PP.text (leftpad width name) PP.<+>+                    PP.hsep+                        ( prettyVi vi+                        : map (\vi' -> PP.text "||" PP.<+> prettyVi' vi') vis'+                        )+                Right vr ->+                    comma PP.<+>+                    PP.text (leftpad width name) PP.<+>+                    C.pretty vr+          where+            comma | isFirst, v < C.CabalSpecV2_2 = PP.text " "+                  | otherwise = PP.comma++        -- indent first+        prettyVi (C.LowerBound l lb, C.NoUpperBound) =+            prettyLowerBound lb PP.<> C.pretty l+        prettyVi (C.LowerBound l C.InclusiveBound, C.UpperBound u C.InclusiveBound)+            | l == u = PP.text "==" PP.<> C.pretty l+        prettyVi (C.LowerBound l lb, C.UpperBound u ub) =+            prettyLowerBound lb PP.<> PP.text (leftpad width' l')+            PP.<+> PP.text "&&" PP.<+>+            prettyUpperBound ub PP.<> C.pretty u+          where+            l' = C.prettyShow l++        prettyVi' (C.LowerBound l lb, C.NoUpperBound) =+            prettyLowerBound lb PP.<> C.pretty l+        prettyVi' (C.LowerBound l C.InclusiveBound, C.UpperBound u C.InclusiveBound)+            | l == u = PP.text "==" PP.<> C.pretty l+        prettyVi' (C.LowerBound l lb, C.UpperBound u ub) =+            prettyLowerBound lb PP.<> C.pretty l PP.<+> PP.text "&&" PP.<+>+            prettyUpperBound ub PP.<> C.pretty u++        prettyLowerBound :: C.Bound -> PP.Doc+        prettyLowerBound C.InclusiveBound = PP.text ">="+        prettyLowerBound C.ExclusiveBound = PP.text ">"++        prettyUpperBound :: C.Bound -> PP.Doc+        prettyUpperBound C.InclusiveBound = PP.text "<="+        prettyUpperBound C.ExclusiveBound = PP.text "<"+  where+    empty :: [C.VersionInterval] -> Bool+    empty []                                                  = True+    empty [(C.LowerBound l C.InclusiveBound, C.NoUpperBound)] = l == C.mkVersion [0]+    empty _                                                   = False++    norm :: [C.VersionInterval] -> Either [C.VersionInterval] C.VersionRange+    norm []     = Right C.anyVersion+    norm (i:is) = maybe (Left $ i:is) Right $+        foldr1 C.unionVersionRanges <$> traverse f (i : is)+      where+        f :: C.VersionInterval -> Maybe C.VersionRange+        f (C.LowerBound l C.InclusiveBound, C.UpperBound u C.ExclusiveBound)+            | v >= C.CabalSpecV2_0, u == C.majorUpperBound l =+                Just (C.majorBoundVersion l)+        f _ = Nothing++    firstComponent :: [C.VersionInterval] -> Int+    firstComponent [] = 0+    firstComponent ((C.LowerBound l _, _) : _) = length (C.prettyShow l)++leftpad :: Int -> String -> String+leftpad w s = s ++ replicate (w - length s) ' '
+ src/CabalFmt/Fields/Extensions.hs view
@@ -0,0 +1,28 @@+{-# LANGUAGE OverloadedStrings #-}+module CabalFmt.Fields.Extensions (+    otherExtensionsF,+    defaultExtensionsF,+    ) where++import Data.List                   (sortOn)+import Distribution.Compat.Newtype++import qualified Distribution.Parsec          as C+import qualified Distribution.Parsec.Newtypes as C+import qualified Distribution.Pretty          as C+import qualified Language.Haskell.Extension   as C+import qualified Text.PrettyPrint             as PP++import CabalFmt.Fields++otherExtensionsF :: FieldDescrs () ()+otherExtensionsF = singletonF "other-extensions" pretty parse++defaultExtensionsF :: FieldDescrs () ()+defaultExtensionsF = singletonF "default-extensions" pretty parse++parse :: C.CabalParsing m => m [C.Extension]+parse = unpack' (C.alaList' C.FSep C.MQuoted) <$> C.parsec++pretty :: [C.Extension] -> PP.Doc+pretty = PP.vcat . map C.pretty . sortOn show
+ src/CabalFmt/Fields/Modules.hs view
@@ -0,0 +1,43 @@+{-# LANGUAGE OverloadedStrings #-}+module CabalFmt.Fields.Modules (+    otherModulesF,+    exposedModulesF,+    ) where++import Data.Function               (on)+import Data.List                   (nub, sortBy)+import Distribution.Compat.Newtype++import qualified Distribution.ModuleName      as C+import qualified Distribution.Parsec          as C+import qualified Distribution.Parsec.Newtypes as C+import qualified Distribution.Pretty          as C+import qualified Text.PrettyPrint             as PP++import CabalFmt.Fields++exposedModulesF :: FieldDescrs () ()+exposedModulesF = singletonF "exposed-modules" pretty parse++otherModulesF :: FieldDescrs () ()+otherModulesF = singletonF "other-modules" pretty parse++parse :: C.CabalParsing m => m [C.ModuleName]+parse = unpack' (C.alaList' C.VCat C.MQuoted) <$> C.parsec++pretty :: [C.ModuleName] -> PP.Doc+pretty = PP.vcat . map C.pretty . nub . sortBy (cmp `on` C.prettyShow)+  where+    cmp a b = case dropCommonPrefix a b of+        ([], [])  -> EQ+        ([], _:_) -> LT+        (_:_, []) -> GT+        (a', b')  -> compare a' b'++dropCommonPrefix :: Eq a => [a] -> [a] -> ([a], [a])+dropCommonPrefix [] [] = ([], [])+dropCommonPrefix [] ys = ([], ys)+dropCommonPrefix xs [] = (xs, [])+dropCommonPrefix xs@(x:xs') ys@(y:ys')+    | x == y    = dropCommonPrefix xs' ys'+    | otherwise = (xs, ys)
+ src/CabalFmt/Fields/TestedWith.hs view
@@ -0,0 +1,34 @@+{-# LANGUAGE OverloadedStrings #-}+module CabalFmt.Fields.TestedWith (+    testedWithF,+    ) where++import Distribution.Compat.Newtype++import qualified Distribution.Parsec                as C+import qualified Distribution.Compiler                as C+import qualified Distribution.Parsec.Newtypes       as C+import qualified Distribution.Pretty                as C+import qualified Distribution.Types.VersionRange    as C+import qualified Text.PrettyPrint                   as PP+import qualified Data.Map.Strict as Map++import CabalFmt.Fields++testedWithF :: FieldDescrs () ()+testedWithF = singletonF "tested-with" pretty parse where+    parse :: C.CabalParsing m => m [(C.CompilerFlavor, C.VersionRange)]+    parse = unpack' (C.alaList' C.FSep C.TestedWith) <$> C.parsec++    pretty :: [(C.CompilerFlavor, C.VersionRange)] -> PP.Doc+    pretty tw0 = PP.fsep $ PP.punctuate PP.comma+        [ prettyC c PP.<+> C.pretty vr+        | (c, vr) <- Map.toList tw1+        ]+      where+        tw1 :: Map.Map C.CompilerFlavor C.VersionRange+        tw1 = Map.fromListWith C.unionVersionRanges tw0++        prettyC C.GHC   = PP.text "GHC"+        prettyC C.GHCJS = PP.text "GHCJS"+        prettyC c       = C.pretty c
+ src/CabalFmt/Monad.hs view
@@ -0,0 +1,17 @@+{-# LANGUAGE DerivingStrategies, GeneralizedNewtypeDeriving #-}+module CabalFmt.Monad (+    CabalFmt,+    runCabalFmt,+    ) where++import Control.Monad.Except (MonadError)+import Control.Monad.Reader (MonadReader, ReaderT, runReaderT)++import CabalFmt.Error+import CabalFmt.Options++newtype CabalFmt a = CabalFmt { unCabalFmt :: ReaderT Options (Either Error) a }+  deriving newtype (Functor, Applicative, Monad, MonadReader Options, MonadError Error)++runCabalFmt :: Options -> CabalFmt a -> Either Error a+runCabalFmt opts m = runReaderT (unCabalFmt m) opts
+ src/CabalFmt/Options.hs view
@@ -0,0 +1,20 @@+module CabalFmt.Options (+    Options (..),+    defaultOptions,+    ) where++import qualified Distribution.CabalSpecVersion as C++data Options = Options+    { optIndent      :: !Int+    , optSpecVersion :: !C.CabalSpecVersion+    , optFileList    :: ![FilePath]+    }+  deriving Show++defaultOptions :: Options+defaultOptions = Options+    { optIndent      = 2+    , optSpecVersion = C.cabalSpecLatest+    , optFileList    = []+    }
+ src/CabalFmt/Parser.hs view
@@ -0,0 +1,27 @@+module CabalFmt.Parser where++import Control.Monad.Except (throwError)++import qualified Data.ByteString                              as BS+import qualified Distribution.Fields                          as C+import qualified Distribution.PackageDescription.Parsec       as C+import qualified Distribution.Parsec                          as C+import qualified Distribution.Types.GenericPackageDescription as C++import CabalFmt.Error+import CabalFmt.Monad++runParseResult :: FilePath -> BS.ByteString -> C.ParseResult a -> CabalFmt a+runParseResult filepath contents pr = case result of+    Right gpd -> return gpd+    Left (mspecVersion, errors) -> throwError $ CabalParseError filepath contents errors mspecVersion warnings+  where+    (warnings, result) = C.runParseResult pr++parseGpd :: FilePath -> BS.ByteString -> CabalFmt C.GenericPackageDescription+parseGpd filepath contents = runParseResult filepath contents $ C.parseGenericPackageDescription contents++parseFields :: BS.ByteString -> CabalFmt [C.Field C.Position]+parseFields contents = case C.readFields contents of+    Left err -> throwError $ PanicCannotParseInput err+    Right x  -> return x
+ src/CabalFmt/Refactoring.hs view
@@ -0,0 +1,76 @@+{-# LANGUAGE OverloadedStrings #-}+module CabalFmt.Refactoring (+    Refactoring,+    refactoringExpandExposedModules,+    ) where++import Data.List       (intercalate, stripPrefix)+import Data.Maybe      (catMaybes)+import System.FilePath (dropExtension, splitDirectories)++import qualified Distribution.Compat.CharParsing     as C+import qualified Distribution.Fields                 as C+import qualified Distribution.Parsec                 as C+import qualified Distribution.Parsec.FieldLineStream as C+import qualified Distribution.Simple.Utils           as C++import CabalFmt.Comments+import CabalFmt.Options++-------------------------------------------------------------------------------+-- Refactoring type+-------------------------------------------------------------------------------++type Refactoring = Options -> [C.Field Comments] -> [C.Field Comments]++-------------------------------------------------------------------------------+-- Expand exposed-modules+-------------------------------------------------------------------------------++refactoringExpandExposedModules :: Refactoring+refactoringExpandExposedModules opts = overField refact where+    refact name@(C.Name c n) fls+        | n == "exposed-modules" || n == "other-modules"+        , definitions <- parse c =+            let newModules :: [C.FieldLine Comments]+                newModules = catMaybes+                    [ do rest <- stripPrefix prefix fp+                         return $ C.FieldLine mempty $ C.toUTF8BS $ intercalate "." rest+                    | prefix <- definitions+                    , fp <- fileList+                    ]+            in (name, newModules ++ fls)+        | otherwise = (name, fls)++    fileList :: [[FilePath]]+    fileList = map (splitDirectories . dropExtension) (optFileList opts)++    parse :: Comments -> [[FilePath]]+    parse (Comments bss) = catMaybes+        [ either (const Nothing) Just+        $ C.runParsecParser parser "<input>" $ C.fieldLineStreamFromBS bs+        | bs <- bss+        ]++    parser :: C.ParsecParser [FilePath]+    parser = do+        _ <- C.string "--"+        C.spaces+        _ <- C.string "cabal-fmt:"+        C.spaces+        _ <- C.string "expand"+        C.spaces+        dir <- C.parsecToken+        return (splitDirectories dir)++-------------------------------------------------------------------------------+-- Tools+-------------------------------------------------------------------------------++overField :: (C.Name Comments -> [C.FieldLine Comments] -> (C.Name Comments, [C.FieldLine Comments]))+          -> [C.Field Comments] -> [C.Field Comments]+overField f = goMany where+    goMany = map go++    go (C.Field name fls)       = let ~(name', fls') = f name fls in C.Field name' fls'+    go (C.Section name args fs) = C.Section name args (goMany fs)
+ tests/Golden.hs view
@@ -0,0 +1,43 @@+module Main (main) where++import Distribution.Simple.Utils  (fromUTF8BS, toUTF8BS)+import System.FilePath            ((-<.>), (</>))+import System.Process             (readProcessWithExitCode)+import Test.Tasty                 (TestTree, defaultMain, testGroup)+import Test.Tasty.Golden.Advanced (goldenTest)++import qualified Data.ByteString as BS++import CabalFmt         (cabalFmt)+import CabalFmt.Monad   (runCabalFmt)+import CabalFmt.Options (defaultOptions)++main :: IO ()+main = defaultMain $ testGroup "tests"+    [ goldenTest' "cabal-fmt"+    , goldenTest' "Cabal"+    , goldenTest' "simple-example"+    ]++goldenTest' :: String -> TestTree+goldenTest' n = goldenTest n readGolden makeTest cmp writeGolden+  where+    goldenPath = "fixtures" </> n -<.> "format"+    inputPath  = "fixtures" </> n -<.> "cabal"++    readGolden  = BS.readFile goldenPath+    writeGolden = BS.writeFile goldenPath++    makeTest = do+        contents <- BS.readFile inputPath+        case runCabalFmt defaultOptions $ cabalFmt inputPath contents of+            Right output' -> return (toUTF8BS output')+            Left err      -> fail (show err)++    cmp a b | a == b    = return Nothing+            | otherwise = Just <$> readProcess' "diff" ["-u", goldenPath, "-"] (fromUTF8BS b)+++    readProcess' proc args input = do+        (_, out, _) <- readProcessWithExitCode proc args input+        return out