Try removing the bytecomp-revert.patch

overlays/bytecomp-revert.patch

@@ -1,30 +0,0 @@
-diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
-index 6c5051d70c4..a0063cbef7b 100644
---- a/lisp/emacs-lisp/bytecomp.el
-+++ b/lisp/emacs-lisp/bytecomp.el
-@@ -3570,8 +3570,6 @@ byte-compile-form
-                 (setq form (cons 'progn (cdr form)))
-                 (setq handler #'byte-compile-progn))
-                ((and (or sef (function-get (car form) 'important-return-value))
--                     ;; Don't warn for arguments to `ignore'.
--                     (not (eq byte-compile--for-effect 'for-effect-no-warn))
-                      (byte-compile-warning-enabled-p
-                       'ignored-return-value (car form)))
-                 (byte-compile-warn-x
-@@ -4515,8 +4513,11 @@ byte-compile-goto-if
- 
- (defun byte-compile-ignore (form)
-   (dolist (arg (cdr form))
--    ;; Compile each argument for-effect but suppress unused-value warnings.
--    (byte-compile-form arg 'for-effect-no-warn))
-+    ;; Compile args for value (to avoid warnings about unused values),
-+    ;; emit a discard after each, and trust the LAP peephole optimiser
-+    ;; to annihilate useless ops.
-+    (byte-compile-form arg)
-+    (byte-compile-discard))
-   (byte-compile-form nil))
- 
- ;; Return the list of items in CONDITION-PARAM that match PRED-LIST.
--- 
-2.42.0
-

overlays/emacs.nix

@@ -92,24 +92,12 @@ let
                   # TODO: remove when we drop support for < 23.05, and instead move withTreeSitter to the above line with the other arguments
                   maybeOverridden = if (super.lib.hasAttr "treeSitter" base || super.lib.hasAttr "withTreeSitter" base) then base.override { withTreeSitter = true; } else base;
               in
-                maybeOverridden.overrideAttrs (
+                maybeOverridden;
-                  oa: {
-                    patches = oa.patches ++ [
-                      # XXX: #318
-                      ./bytecomp-revert.patch
-                    ]; }
-                );
 
   emacs-pgtk = let base = super.lib.makeOverridable (mkGitEmacs "emacs-pgtk" ../repos/emacs/emacs-master.json) { withSQLite3 = true; withWebP = true; withPgtk = true; };
                    # TODO: remove when we drop support for < 23.05, and instead move withTreeSitter to the above line with the other arguments
                    maybeOverridden = if (super.lib.hasAttr "treeSitter" base || super.lib.hasAttr "withTreeSitter" base) then base.override { withTreeSitter = true; } else base;
-               in maybeOverridden.overrideAttrs (
+               in maybeOverridden;
-                 oa: {
-                   patches = oa.patches ++ [
-                     # XXX: #318
-                     ./bytecomp-revert.patch
-                   ]; }
-               );
 
   emacs-unstable = let base = super.lib.makeOverridable (mkGitEmacs "emacs-unstable" ../repos/emacs/emacs-unstable.json) { withSQLite3 = true; withWebP = true; };
                        # TODO: remove when we drop support for < 23.05, and instead move withTreeSitter to the above line with the other arguments