From 46a0243923a19886b8e5515c24d8007497273260 Mon Sep 17 00:00:00 2001
From: Tristan Ross <tristan.ross@midstall.com>
Date: Tue, 25 Jun 2024 22:15:45 -0700
Subject: [PATCH] flutterPackages-source.v3_23.engine: fix building

---
 .../compilers/flutter/engine/package.nix         | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/compilers/flutter/engine/package.nix b/pkgs/development/compilers/flutter/engine/package.nix
index 09133fea5fa9..a87088dc8131 100644
--- a/pkgs/development/compilers/flutter/engine/package.nix
+++ b/pkgs/development/compilers/flutter/engine/package.nix
@@ -83,6 +83,8 @@ let
   };
 
   outName = "host_${runtimeMode}${lib.optionalString (!isOptimized) "_unopt --unoptimized"}";
+
+  dartPath = "${if (lib.versionAtLeast flutterVersion "3.23") then "flutter/third_party" else "third_party"}/dart";
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "flutter-engine-${runtimeMode}${lib.optionalString (!isOptimized) "-unopt"}";
@@ -168,14 +170,14 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ gtk3 ];
 
   patchtools = [
-    "third_party/dart/tools/sdks/dart-sdk/bin/dart"
+    "${dartPath}/tools/sdks/dart-sdk/bin/dart"
     "flutter/third_party/gn/gn"
   ];
 
   dontPatch = true;
 
   patchgit = [
-    "third_party/dart"
+    dartPath
     "flutter"
     "."
   ] ++ lib.optional (lib.versionAtLeast flutterVersion "3.21") "flutter/third_party/skia";
@@ -183,6 +185,8 @@ stdenv.mkDerivation (finalAttrs: {
   postUnpack = ''
     pushd ${src.name}
 
+    cp ${./pkg-config.py} src/build/config/linux/pkg-config.py
+
     cp -pr --reflink=auto $swiftshader src/flutter/third_party/swiftshader
     chmod -R u+w -- src/flutter/third_party/swiftshader
 
@@ -190,7 +194,8 @@ stdenv.mkDerivation (finalAttrs: {
 
     mkdir -p src/flutter/buildtools/${constants.alt-platform}
     ln -s ${llvm} src/flutter/buildtools/${constants.alt-platform}/clang
-    ln -s ${dart} src/third_party/dart/tools/sdks/dart-sdk
+
+    ln -s ${dart} src/${dartPath}/tools/sdks/dart-sdk
 
     ${lib.optionalString (stdenv.isLinux) ''
       for patchtool in ''${patchtools[@]}; do
@@ -210,9 +215,8 @@ stdenv.mkDerivation (finalAttrs: {
       popd
     done
 
-    dart src/third_party/dart/tools/generate_package_config.dart
-    cp ${./pkg-config.py} src/build/config/linux/pkg-config.py
-    echo "${dartSdkVersion}" >src/third_party/dart/sdk/version
+    dart src/${dartPath}/tools/generate_package_config.dart
+    echo "${dartSdkVersion}" >src/${dartPath}/sdk/version
 
     rm -rf src/third_party/angle/.git
     python3 src/flutter/tools/pub_get_offline.py