gistfile1.el

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("[ \f	\n
]+" nil 0)
  split-string(nil)
  haskell-flymake-init()
  flymake-start-syntax-check()
  flymake-after-save-hook()
  run-hooks(after-save-hook)
  basic-save-buffer()
  save-buffer(1)
  call-interactively(save-buffer)
  ghc-save-buffer()
  call-interactively(ghc-save-buffer nil nil)
  command-execute(ghc-save-buffer)