emacs30: add a patch to fix upstream bug 67916 (#367296)

From: Lin Jian <me@linj.tech>

Bug: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=67916

Inhibit lexical cookie warning for *-pkg.el files (bug#67916)

Users may use byte-compile-error-on-warn to turn compilation warnings

into errors to make sure their Emacs lisp packages are warning-free.

Emacs bug 67916 makes that difficult because the Emacs-generated file

*-pkg.el emits a compilation warning about missing lexical cookie.

There is an upstream patch to fix this.  That patch makes Emacs also

generate the needed lexical cookie when generating *-pkg.el files.

However, that patch has stalled.

This patch takes an easier but less accurate approach by inhibiting

lexical cookie warning for *-pkg.el files.  Given that not all

*-pkg.el files are generated by Emacs, to reduce impact, this patch

also checks no-byte-compile.

--- a/lisp/emacs-lisp/bytecomp.el

+++ b/lisp/emacs-lisp/bytecomp.el

@@ -2266,6 +2266,8 @@ See also `emacs-lisp-byte-compile-and-load'."

               filename buffer-file-name))

       ;; Don't inherit lexical-binding from caller (bug#12938).

       (unless (or (local-variable-p 'lexical-binding)

+                  (and (string-suffix-p "-pkg.el" filename)

+                       (with-current-buffer input-buffer no-byte-compile))

                   bytecomp--inhibit-lexical-cookie-warning)

         (let ((byte-compile-current-buffer (current-buffer)))

           (displaying-byte-compile-warnings

    variant = "mainline";

    rev = "30.0.93";

    hash = "sha256-lcpB4lKD3tjvCn646hUyAskxWNCQwEJ0RX/ZddRBRRU=";

    patches = fetchpatch: [

      (builtins.path {

        name = "inhibit-lexical-cookie-warning-67916.patch";

        path = ./inhibit-lexical-cookie-warning-67916-30.patch;

      })

    ];

  });

  emacs28-macport = import ./make-emacs.nix (mkArgs {