[API Change] Remove modules T.P.Writers.Custom and T.P.Readers.Custom.

The functions `writeCustom` and `readCustom` are available from module
Text.Pandoc.Lua.

pandoc.cabal

@@ -606,7 +606,6 @@ library
                    Text.Pandoc.Readers.Ipynb,
                    Text.Pandoc.Readers.CSV,
                    Text.Pandoc.Readers.RTF,
-                   Text.Pandoc.Readers.Custom,
                    Text.Pandoc.Writers,
                    Text.Pandoc.Writers.Native,
                    Text.Pandoc.Writers.Docbook,
@@ -628,7 +627,6 @@ library
                    Text.Pandoc.Writers.RST,
                    Text.Pandoc.Writers.Org,
                    Text.Pandoc.Writers.AsciiDoc,
-                   Text.Pandoc.Writers.Custom,
                    Text.Pandoc.Writers.Textile,
                    Text.Pandoc.Writers.MediaWiki,
                    Text.Pandoc.Writers.DokuWiki,

src/Text/Pandoc/App.hs

@@ -64,6 +64,7 @@ import Text.Pandoc.App.OutputSettings (OutputSettings (..), optToOutputSettings)
 import Text.Collate.Lang (Lang (..), parseLang)
 import Text.Pandoc.Filter (Filter (JSONFilter, LuaFilter), Environment (..),
                            applyFilters)
+import Text.Pandoc.Lua (readCustom)
 import Text.Pandoc.PDF (makePDF)
 import Text.Pandoc.SelfContained (makeSelfContained)
 import Text.Pandoc.Shared (eastAsianLineBreakFilter,
@@ -71,7 +72,6 @@ import Text.Pandoc.Shared (eastAsianLineBreakFilter,
          defaultUserDataDir, tshow, textToIdentifier)
 import Text.Pandoc.Writers.Shared (lookupMetaString)
 import Text.Pandoc.Readers.Markdown (yamlToMeta)
-import Text.Pandoc.Readers.Custom (readCustom)
 import qualified Text.Pandoc.UTF8 as UTF8
 #ifndef _WINDOWS
 import System.Posix.IO (stdOutput)

src/Text/Pandoc/App/OutputSettings.hs

@@ -39,7 +39,7 @@ import Text.Pandoc.App.FormatHeuristics (formatFromFilePaths)
 import Text.Pandoc.App.Opt (Opt (..))
 import Text.Pandoc.App.CommandLineOptions (engines, setVariable)
 import Text.Pandoc.Highlighting (lookupHighlightingStyle)
-import Text.Pandoc.Writers.Custom (writeCustom)
+import Text.Pandoc.Lua (writeCustom)
 import qualified Text.Pandoc.UTF8 as UTF8
 
 readUtf8File :: PandocMonad m => FilePath -> m T.Text

src/Text/Pandoc/Readers/Custom.hs

@@ -1,13 +0,0 @@
-{- |
-   Module      : Text.Pandoc.Readers.Custom
-   Copyright   : Copyright (C) 2021-2022 John MacFarlane
-   License     : GNU GPL, version 2 or above
-
-   Maintainer  : John MacFarlane <jgm@berkeley.edu>
-   Stability   : alpha
-   Portability : portable
-
-Supports custom parsers written in Lua which produce a Pandoc AST.
--}
-module Text.Pandoc.Readers.Custom ( readCustom ) where
-import Text.Pandoc.Lua.Reader ( readCustom )

src/Text/Pandoc/Writers/Custom.hs

@@ -1,14 +0,0 @@
-{-# LANGUAGE LambdaCase          #-}
-{-# LANGUAGE OverloadedStrings   #-}
-{- |
-   Module      : Text.Pandoc.Writers.Custom
-   Copyright   : 2012-2022 John MacFarlane,
-   License     : GNU GPL, version 2 or above
-   Maintainer  : John MacFarlane <jgm@berkeley.edu>
-
-Conversion of 'Pandoc' documents to custom markup using
-a Lua writer.
--}
-module Text.Pandoc.Writers.Custom ( writeCustom ) where
-
-import Text.Pandoc.Lua.Writer ( writeCustom )