From 3ba984c2e1d3604e0bf51dc856da5208e0d93e28 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Wed, 15 Nov 2023 22:46:02 -0500
Subject: [PATCH] NSPlist: fix build with clang 16

The pre-generated lexer uses the `register` storage class specifier,
which is not supported in C++17 (the default for clang 16). Regenerate
it for improved compatibility.
---
 pkgs/development/libraries/NSPlist/default.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/NSPlist/default.nix b/pkgs/development/libraries/NSPlist/default.nix
index 680e86dd64ef..0ad160673973 100644
--- a/pkgs/development/libraries/NSPlist/default.nix
+++ b/pkgs/development/libraries/NSPlist/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, cmake }:
+{ lib, stdenv, fetchFromGitHub, flex, cmake }:
 
 stdenv.mkDerivation {
   pname = "NSPlist";
@@ -11,7 +11,12 @@ stdenv.mkDerivation {
     sha256 = "0v4yfiwfd08hmh2ydgy6pnmlzjbd96k78dsla9pfd56ka89aw74r";
   };
 
-  nativeBuildInputs = [ cmake ];
+  nativeBuildInputs = [ flex cmake ];
+
+  preConfigure = ''
+    # Regenerate the lexer for improved compatibility with clang 16.
+    flex -o src/NSPlistLexer.cpp <(tail --lines=+17 src/NSPlistLexer.l)
+  '';
 
   meta = with lib; {
     maintainers = with maintainers; [ matthewbauer ];