From cf6ce7b7d4e25c11b4c3df0af22c1a3dfe8f740a Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Thu, 9 Nov 2023 06:42:52 +0100
Subject: [PATCH 1/5] gecode_3: fix build with clang 16

---
 pkgs/development/libraries/gecode/3.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/libraries/gecode/3.nix b/pkgs/development/libraries/gecode/3.nix
index 36c7120ac609..1d6f158b52f2 100644
--- a/pkgs/development/libraries/gecode/3.nix
+++ b/pkgs/development/libraries/gecode/3.nix
@@ -18,10 +18,17 @@ stdenv.mkDerivation rec {
     (import ./fix-const-weights-clang-patch.nix fetchpatch)
   ];
 
+  postPatch = ''
+    substituteInPlace gecode/flatzinc/lexer.yy.cpp \
+      --replace "register " ""
+  '';
+
   nativeBuildInputs = [ perl ];
 
   preConfigure = "patchShebangs configure";
 
+  env.CXXFLAGS = lib.optionalString stdenv.cc.isClang "-std=c++14";
+
   meta = with lib; {
     license = licenses.mit;
     homepage = "https://www.gecode.org";

From a42220320aaef034d50c097896a15fd45137b2d9 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 10 Nov 2023 03:23:10 +0100
Subject: [PATCH 2/5] texlive.dvisvgm.pkgs: fix build with clang 16

---
 pkgs/tools/typesetting/tex/texlive/bin.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/typesetting/tex/texlive/bin.nix b/pkgs/tools/typesetting/tex/texlive/bin.nix
index 402c0c247e95..2d7f859c809c 100644
--- a/pkgs/tools/typesetting/tex/texlive/bin.nix
+++ b/pkgs/tools/typesetting/tex/texlive/bin.nix
@@ -310,12 +310,21 @@ chktex = stdenv.mkDerivation {
 };
 
 
-dvisvgm = stdenv.mkDerivation rec {
+dvisvgm = stdenv.mkDerivation {
   pname = "texlive-dvisvgm.bin";
   inherit version;
 
   inherit (common) src;
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/mgieseki/dvisvgm/commit/629544928877362d0c6d64f20695f7df3073c5eb.patch";
+      stripLen = 1;
+      extraPrefix = "texk/dvisvgm/dvisvgm-src/";
+      hash = "sha256-CBCbc/woaFeLw7aBG/kSVYc3a5Q56zbAB64kK6mRy4g=";
+    })
+  ];
+
   preConfigure = "cd texk/dvisvgm";
 
   configureFlags = common.configureFlags

From 8a05519cead638df8f9168e311ea69d8b33ebfd7 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 10 Nov 2023 04:47:54 +0100
Subject: [PATCH 3/5] blahtexml: fix build with clang 16

---
 pkgs/tools/typesetting/tex/blahtexml/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/tools/typesetting/tex/blahtexml/default.nix b/pkgs/tools/typesetting/tex/blahtexml/default.nix
index ce071c7006f2..43981eb2ae92 100644
--- a/pkgs/tools/typesetting/tex/blahtexml/default.nix
+++ b/pkgs/tools/typesetting/tex/blahtexml/default.nix
@@ -11,6 +11,11 @@ stdenv.mkDerivation rec {
     hash = "sha256-DL5DyfARHHbwWBVHSa/VwHzNaAx/v7EDdnw1GLOk+y0=";
   };
 
+  postPatch = lib.optionalString stdenv.cc.isClang ''
+    substituteInPlace makefile \
+      --replace "\$(CXX)" "\$(CXX) -std=c++98"
+  '';
+
   outputs = [ "out" "doc" ];
 
   nativeBuildInputs = [ texliveFull ]; # scheme-full needed for ucs package

From bed269ffa57f7100ffbd7cda65f3a7b0fd7e9db3 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 10 Nov 2023 05:02:01 +0100
Subject: [PATCH 4/5] vorbis-tools: fix build with clang 16

---
 pkgs/applications/audio/vorbis-tools/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/applications/audio/vorbis-tools/default.nix b/pkgs/applications/audio/vorbis-tools/default.nix
index 865d82a73562..46e67c7dc33e 100644
--- a/pkgs/applications/audio/vorbis-tools/default.nix
+++ b/pkgs/applications/audio/vorbis-tools/default.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ libogg libvorbis libao curl speex flac ];
 
+  env = lib.optionalAttrs stdenv.cc.isClang {
+    NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
+  };
+
   meta = with lib; {
     description = "Extra tools for Ogg-Vorbis audio codec";
     longDescription = ''

From 4f9710285899663149e00b90a7777f09be630bd1 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 10 Nov 2023 08:34:39 +0100
Subject: [PATCH 5/5] python311Packages.udatetime: fix build

---
 pkgs/development/python-modules/udatetime/default.nix | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/pkgs/development/python-modules/udatetime/default.nix b/pkgs/development/python-modules/udatetime/default.nix
index 17011e1b9073..9eef1512490d 100644
--- a/pkgs/development/python-modules/udatetime/default.nix
+++ b/pkgs/development/python-modules/udatetime/default.nix
@@ -1,7 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, fetchpatch
 }:
 
 buildPythonPackage rec {
@@ -13,16 +12,6 @@ buildPythonPackage rec {
     hash = "sha256-sQvFVwaZpDinLitaZOdr2MKO4779FvIJOHpVB/oLgwE=";
   };
 
-  patches = [
-    # fix build with python 3.9
-    # https://github.com/freach/udatetime/pull/33
-    (fetchpatch {
-      name = "freach-udatetime-pull-33.patch";
-      url = "https://github.com/freach/udatetime/compare/75a07891426364f8bf0b44305b00bb1dd90534ae...2cfbc92cb274a80476a45c6c0d387c19e77a9f6e.patch";
-      sha256 = "pPskJnie+9H3qKqf8X37sxB+CH3lpkj7IYl8HfiuV/4=";
-    })
-  ];
-
   # tests not included on pypi
   doCheck = false;