From 58f7dcd5c8040ad423c5016c662cff100c3a5219 Mon Sep 17 00:00:00 2001
From: Tom Hall <tahall256@protonmail.ch>
Date: Thu, 24 Aug 2023 23:12:59 +0100
Subject: [PATCH 1/3] valhalla: fix build with gcc 12

---
 pkgs/development/libraries/valhalla/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/libraries/valhalla/default.nix b/pkgs/development/libraries/valhalla/default.nix
index 2d400d73f401..778161622563 100644
--- a/pkgs/development/libraries/valhalla/default.nix
+++ b/pkgs/development/libraries/valhalla/default.nix
@@ -44,6 +44,11 @@ stdenv.mkDerivation (finalAttrs: {
     "-DENABLE_BENCHMARKS=OFF"
   ];
 
+  env.NIX_CFLAGS_COMPILE = toString [
+    # Needed for date submodule with GCC 12 https://github.com/HowardHinnant/date/issues/750
+    "-Wno-error=stringop-overflow"
+  ];
+
   buildInputs = [
     boost
     curl

From 900db7c04ef9cc23824cc27f9b533bfd1a45635e Mon Sep 17 00:00:00 2001
From: Tom Hall <tahall256@protonmail.ch>
Date: Fri, 25 Aug 2023 09:59:52 +0100
Subject: [PATCH 2/3] valhalla: Fix build error relating to std::set

---
 pkgs/development/libraries/valhalla/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/libraries/valhalla/default.nix b/pkgs/development/libraries/valhalla/default.nix
index 778161622563..bfd23747db0a 100644
--- a/pkgs/development/libraries/valhalla/default.nix
+++ b/pkgs/development/libraries/valhalla/default.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , cmake
 , pkg-config
 , boost
@@ -29,6 +30,14 @@ stdenv.mkDerivation (finalAttrs: {
     fetchSubmodules = true;
   };
 
+  patches = [
+    # Fix build
+    (fetchpatch {
+      url = "https://github.com/valhalla/valhalla/commit/e4845b68e8ef8de9eabb359b23bf34c879e21f2b.patch";
+      hash = "sha256-xCufmXHGj1JxaMwm64JT9FPY+o0+x4glfJSYLdvHI8U=";
+    })
+  ];
+
   postPatch = ''
     substituteInPlace src/bindings/python/CMakeLists.txt \
       --replace "\''${Python_SITEARCH}" "${placeholder "out"}/${python3.sitePackages}"

From e7fb26513b8489efe94afd63f330dcb1568c1b77 Mon Sep 17 00:00:00 2001
From: Tom Hall <tahall256@protonmail.ch>
Date: Fri, 25 Aug 2023 22:13:59 +0100
Subject: [PATCH 3/3] valhalla, osmscout-server: fix build

To avoid linker errors, they need an older version of protobuf, both
with abseil-cpp built using the same C++17 standard as valhalla and
osmscout-server.
---
 pkgs/top-level/all-packages.nix | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e00fbc33de82..f1928ea269f3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25474,6 +25474,11 @@ with pkgs;
 
   valhalla = callPackage ../development/libraries/valhalla {
     boost = boost.override { enablePython = true; python = python38; };
+    protobuf = protobuf3_21.override {
+      abseil-cpp = abseil-cpp_202103.override {
+        cxxStandard = "17";
+      };
+    };
   };
 
   vamp-plugin-sdk = callPackage ../development/libraries/audio/vamp-plugin-sdk { };
@@ -34633,7 +34638,13 @@ with pkgs;
 
   osmo-sip-connector = callPackage ../servers/osmocom/osmo-sip-connector { };
 
-  osmscout-server = libsForQt5.callPackage ../applications/misc/osmscout-server { };
+  osmscout-server = libsForQt5.callPackage ../applications/misc/osmscout-server {
+    protobuf = protobuf3_21.override {
+      abseil-cpp = abseil-cpp_202103.override {
+        cxxStandard = "17";
+      };
+    };
+  };
 
   palemoon-bin = callPackage ../applications/networking/browsers/palemoon/bin.nix { };