emacs.pkgs.pod-mode: fix build

Author: jian-lin

pkgs/applications/editors/emacs/elisp-packages/manual-packages/pod-mode/package.nix

@@ -15,6 +15,7 @@ let
 in
 melpaBuild {
   inherit pname version src;
+  melpaVersion = "1.4"; # upstream versions such as 1.04 are not supported
 
   outputs = [
     "out"