Relax upper bound for hslua, allow hslua-2.2. (#7929)

Lua 5.4 is used by default after this is merged. Packagers may still include Lua 5.3
instead by building pandoc with `--constraint='hslua <2.2'`.

Differences between 5.3 and 5.4 should not generally affect pandoc Lua filters.
See list of incompatible changes here  <https://www.lua.org/manual/5.4/manual.html#8.1>

pandoc.cabal

@@ -481,9 +481,9 @@ library
                  file-embed            >= 0.0      && < 0.1,
                  filepath              >= 1.1      && < 1.5,
                  haddock-library       >= 1.10     && < 1.11,
-                 hslua                 >= 2.1      && < 2.2,
-                 hslua-aeson           >= 2.1      && < 2.2,
-                 hslua-marshalling     >= 2.1      && < 2.2,
+                 hslua                 >= 2.1      && < 2.3,
+                 hslua-aeson           >= 2.1      && < 2.3,
+                 hslua-marshalling     >= 2.1      && < 2.3,
                  hslua-module-doclayout>= 1.0.2    && < 1.1,
                  hslua-module-path     >= 1.0      && < 1.1,
                  hslua-module-system   >= 1.0      && < 1.1,
@@ -786,7 +786,7 @@ test-suite test-pandoc
                   doctemplates      >= 0.10    && < 0.11,
                   exceptions        >= 0.8     && < 0.11,
                   filepath          >= 1.1     && < 1.5,
-                  hslua             >= 2.1     && < 2.2,
+                  hslua             >= 2.1     && < 2.3,
                   mtl               >= 2.2     && < 2.3,
                   pandoc-types      >= 1.22.1  && < 1.23,
                   process           >= 1.2.3   && < 1.7,

src/Text/Pandoc/Lua/Marshal/ReaderOptions.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                  #-}
 {-# LANGUAGE LambdaCase           #-}
 {-# LANGUAGE OverloadedStrings    #-}
 {-# LANGUAGE ScopedTypeVariables  #-}
@@ -21,7 +22,9 @@ module Text.Pandoc.Lua.Marshal.ReaderOptions
 
 import Data.Default (def)
 import HsLua as Lua
+#if !MIN_VERSION_hslua(2,2,0)
 import HsLua.Aeson (peekViaJSON, pushViaJSON)
+#endif
 import Text.Pandoc.Lua.Marshal.List (pushPandocList)
 import Text.Pandoc.Options (ReaderOptions (..))
 

src/Text/Pandoc/Lua/Marshal/WriterOptions.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                  #-}
 {-# LANGUAGE LambdaCase           #-}
 {-# LANGUAGE OverloadedStrings    #-}
 {-# LANGUAGE ScopedTypeVariables  #-}
@@ -20,7 +21,9 @@ module Text.Pandoc.Lua.Marshal.WriterOptions
 import Control.Applicative (optional)
 import Data.Default (def)
 import HsLua as Lua
+#if !MIN_VERSION_hslua(2,2,0)
 import HsLua.Aeson (peekViaJSON, pushViaJSON)
+#endif
 import Text.Pandoc.Lua.Marshal.List (pushPandocList)
 import Text.Pandoc.Lua.Marshal.Template (peekTemplate, pushTemplate)
 import Text.Pandoc.Options (WriterOptions (..))

src/Text/Pandoc/Lua/Writer/Classic.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                 #-}
 {-# LANGUAGE FlexibleContexts    #-}
 {-# LANGUAGE FlexibleInstances   #-}
 {-# LANGUAGE OverloadedStrings   #-}
@@ -24,7 +25,9 @@ import Data.Maybe (fromMaybe)
 import qualified Data.Text as T
 import Data.Text (Text, pack)
 import HsLua as Lua hiding (Operation (Div))
+#if !MIN_VERSION_hslua(2,2,0)
 import HsLua.Aeson (peekViaJSON)
+#endif
 import Text.DocLayout (literal, render)
 import Text.DocTemplates (Context)
 import Text.Pandoc.Definition

stack.yaml

@@ -12,24 +12,24 @@ extra-deps:
 - doctemplates-0.10.0.1
 - emojis-0.1.2
 - doclayout-0.3.1.1
-- lpeg-1.0.2
-- hslua-2.1.0
-- hslua-aeson-2.1.0
-- hslua-classes-2.1.0
-- hslua-core-2.1.0
-- hslua-marshalling-2.1.0
-- hslua-module-doclayout-1.0.2
-- hslua-module-path-1.0.1
-- hslua-module-system-1.0.1
-- hslua-module-text-1.0.1
-- hslua-module-version-1.0.1
-- hslua-objectorientation-2.1.0
-- hslua-packaging-2.1.0
-- lua-2.1.0
-- lua-arbitrary-1.0.0
-- tasty-hslua-1.0.1
-- tasty-lua-1.0.1
-- pandoc-lua-marshal-0.1.5
+- lpeg-1.0.3
+- hslua-2.2.0
+- hslua-aeson-2.2.0
+- hslua-classes-2.2.0
+- hslua-core-2.2.0
+- hslua-marshalling-2.2.0
+- hslua-module-doclayout-1.0.3
+- hslua-module-path-1.0.2
+- hslua-module-system-1.0.2
+- hslua-module-text-1.0.2
+- hslua-module-version-1.0.2
+- hslua-objectorientation-2.2.0
+- hslua-packaging-2.2.0
+- lua-2.2.0
+- lua-arbitrary-1.0.1
+- tasty-hslua-1.0.2
+- tasty-lua-1.0.2
+- pandoc-lua-marshal-0.1.5.1
 - pandoc-types-1.22.1
 - aeson-pretty-0.8.9
 - unicode-transforms-0.4.0@rev:1