Arash Esbati <arash@gnu.org> writes:

> I don't use doc-view, so I can't really tell, but preview.el (part of
> AUCTeX) uses "executable-find".  Applied to
> `doc-view-ghostscript-program', it could look like this:

Following up myself, I suggest the patch attached.

@Tassilo: What do you think, does it make sense?

Best, Arash