vim hangs after recompilation with extra features

[jrraymond]

I'm not entirely sure this is due to vim2hs, but I strongly suspect it is so I thought I'd let you know.
Initially vim2hs was working perfectly. I recompiled vim with the following options.

./configure --with-features=huge --enable-multibyte --enable-rubyinterp --enable-pythoninterp --enable-perlinterp --enable-luainterp  --enable-fail-if-missing --enable-gui=gtk2 --enable-cscope --prefix=/usr

The output of 'vim --version' is

     VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Oct 30 2015 12:25:17)
     Included patches: 1-901
     Huge version with GTK2 GUI.  Features included (+) or not (-):
     +acl             +farsi           +mouse_netterm   +syntax
     +arabic          +file_in_path    +mouse_sgr       +tag_binary
     +autocmd         +find_in_path    -mouse_sysmouse  +tag_old_static
     +balloon_eval    +float           +mouse_urxvt     -tag_any_white
     +browse          +folding         +mouse_xterm     -tcl
     ++builtin_terms  -footer          +multi_byte      +terminfo
     +byte_offset     +fork()          +multi_lang      +termresponse
     +cindent         +gettext         -mzscheme        +textobjects
     +clientserver    -hangul_input    +netbeans_intg   +title
     +clipboard       +iconv           +path_extra      +toolbar
     +cmdline_compl   +insert_expand   +perl            +user_commands
     +cmdline_hist    +jumplist        +persistent_undo +vertsplit
     +cmdline_info    +keymap          +postscript      +virtualedit
     +comments        +langmap         +printer         +visual
     +conceal         +libcall         +profile         +visualextra
     +cryptv          +linebreak       +python          +viminfo
     +cscope          +lispindent      -python3         +vreplace
     +cursorbind      +listcmds        +quickfix        +wildignore
     +cursorshape     +localmap        +reltime         +wildmenu
     +dialog_con_gui  +lua             +rightleft       +windows
     +diff            +menu            +ruby            +writebackup
     +digraphs        +mksession       +scrollbind      +X11
     +dnd             +modify_fname    +signs           -xfontset
     -ebcdic          +mouse           +smartindent     +xim
     +emacs_tags      +mouseshape      -sniff           +xsmp_interact
     +eval            +mouse_dec       +startuptime     +xterm_clipboard
     +ex_extra        +mouse_gpm       +statusline      -xterm_save
     +extra_search    -mouse_jsbterm   -sun_workshop    +xpm

Now when I open a Haskell file vim will freeze on me. If I disable vim2hs then vim will work fine. Hence why I believe it has to do with vim2hs.