They're finally making a movie about Jonah, and, yes, that's the synopsis of the plot. A plot concerning neither his postbellum nor his post-apocalyptic exploits. Instead, the source material is a little known 1990s mini-series in which our holey-cheeked gunslinger scuffles with zombies. My brother got into a scuffle of his own with an Ottawa Comic Book Guy over this very issue.
Of course, with John Malkovich aboard, this thing might just stand a chance.