Change haskell provider to neovimhaskell/haskell-vim, closes #75

syntax/cabal.vim

@@ -0,0 +1,55 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'haskell') == -1
+  
+" syntax highlighting for cabal
+"
+" author: raichoo (raichoo@googlemail.com)
+
+if version < 600
+  syn clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+syn match cabalLineComment "---*\([^-!#$%&\*\+./<=>\?@\\^|~].*\)\?$" contains=@Spell
+syn match cabalIdentifier "[A-Za-z\-]*" contained
+syn match cabalOperator "[<=>&|!]"
+syn match cabalColon ":" contained
+syn match cabalNumber "\<[0-9][0-9\.*]*\>"
+syn match cabalDelimiter "[,()]"
+syn keyword cabalBool True False
+syn keyword cabalConditional if else
+syn match cabalCompilerFlag "\s\+-[^ -][^ ]*"
+syn match cabalDocBulletPoint "^\s\+\*"
+syn match cabalDocHeadline "^\s\+=.*$"
+syn match cabalDocCode "^\s\+>.*$"
+syn match cabalDocNewline "^\s\+\.\s*$"
+syn match cabalSection "^\c\(executable\|library\|flag\|source-repository\|test-suite\|benchmark\)"
+syn match cabalEntry "^\s*[A-Za-z][a-zA-Z\-]*:" contains=cabalIdentifier,cabalColon
+
+syn region cabalDescription start="^\s*[dD]escription:" end="^\<" keepend
+  \ contains=
+  \ cabalEntry,
+  \ cabalLineComment,
+  \ cabalDocBulletPoint,
+  \ cabalDocHeadline,
+  \ cabalDocNewline,
+  \ cabalDocCode
+
+highlight def link cabalIdentifier Identifier
+highlight def link cabalLineComment Comment
+highlight def link cabalOperator Operator
+highlight def link cabalColon Operator
+highlight def link cabalNumber Number
+highlight def link cabalSection Structure
+highlight def link cabalDelimiter Delimiter
+highlight def link cabalBool Boolean
+highlight def link cabalCompilerFlag Macro
+highlight def link cabalConditional Conditional
+highlight def link cabalDocBulletPoint Structure
+highlight def link cabalDocHeadline Include
+highlight def link cabalDocNewline Operator
+highlight def link cabalDocCode Macro
+
+let b:current_syntax = "cabal"
+
+endif