knupfer
commented
9 years ago solved with an even better solution: f9b362109c382c7cc3a821be57f06230c6c7e11c function definitions get evaluated in a temp buffer which gets the file name with a let binding to link the elisp functions to the haskell sources
when injecting the lisp code into the haskell source and evaluate the appropriate region without saving the file, the documentation will note that this function is defined the haskell source, but it won't confuse ghc, because the file isn't edited.