Added support for literate haskell files.

syntax_checkers/lhaskell.vim

@@ -0,0 +1,30 @@
+"============================================================================
+"File:        lhaskell.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Anthony Carapetis <anthony.carapetis at gmail dot com>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+if exists("loaded_lhaskell_syntax_checker")
+    finish
+endif
+let loaded_lhaskell_syntax_checker = 1
+
+"bail if the user doesnt have ghc installed
+if !executable("ghc")
+    finish
+endif
+
+" As this calls ghc, it can take a few seconds... maybe hlint or something
+" could do a good enough job?
+function! SyntaxCheckers_lhaskell_GetLocList()
+    let makeprg = 'ghc '.shellescape(expand('%')).' -e :q'
+    let errorformat = '%-G\\s%#,%f:%l:%c:%m,%E%f:%l:%c:,%Z%m,'
+
+
+    return SyntasticMake({ 'makeprg': makeprg, 'errorformat': errorformat })
+endfunction