From 2572634a6d50fdd1aafbd4f98c3553a08ec3f011 Mon Sep 17 00:00:00 2001
From: Tristan Ross <tristan.ross@midstall.com>
Date: Tue, 25 Jun 2024 21:51:13 -0700
Subject: [PATCH] flutter.engine: fix swiftshader size

---
 .../compilers/flutter/engine/default.nix        |  1 +
 .../compilers/flutter/engine/package.nix        | 17 +++++++++++++----
 .../update/get-engine-swiftshader.nix.in        |  5 +++++
 .../compilers/flutter/versions/3_13/data.json   |  2 +-
 .../compilers/flutter/versions/3_16/data.json   |  2 +-
 .../compilers/flutter/versions/3_19/data.json   |  2 +-
 .../compilers/flutter/versions/3_22/data.json   |  2 +-
 .../compilers/flutter/versions/3_23/data.json   |  2 +-
 8 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/pkgs/development/compilers/flutter/engine/default.nix b/pkgs/development/compilers/flutter/engine/default.nix
index 4aac2301f866..7bf59dc85719 100644
--- a/pkgs/development/compilers/flutter/engine/default.nix
+++ b/pkgs/development/compilers/flutter/engine/default.nix
@@ -51,6 +51,7 @@ stdenv.mkDerivation (
       runtimeMode
       outName
       dart
+      swiftshader
       ;
     inherit altRuntimeMode;
 
diff --git a/pkgs/development/compilers/flutter/engine/package.nix b/pkgs/development/compilers/flutter/engine/package.nix
index 7c2cd5cec220..09133fea5fa9 100644
--- a/pkgs/development/compilers/flutter/engine/package.nix
+++ b/pkgs/development/compilers/flutter/engine/package.nix
@@ -15,6 +15,7 @@
   fetchgit,
   runCommand,
   llvmPackages,
+  llvmPackages_15,
   patchelf,
   openbox,
   xorg,
@@ -67,6 +68,10 @@ let
     url = "https://swiftshader.googlesource.com/SwiftShader.git";
     hash = swiftshaderHash;
     rev = swiftshaderRev;
+
+    postFetch = ''
+      rm -rf $out/third_party/llvm-project
+    '';
   };
 
   llvm = symlinkJoin {
@@ -178,7 +183,14 @@ stdenv.mkDerivation (finalAttrs: {
   postUnpack = ''
     pushd ${src.name}
 
-    ln -s $swiftshader src/flutter/third_party/swiftshader
+    cp -pr --reflink=auto $swiftshader src/flutter/third_party/swiftshader
+    chmod -R u+w -- src/flutter/third_party/swiftshader
+
+    ln -s ${llvmPackages_15.llvm.monorepoSrc} src/flutter/third_party/swiftshader/third_party/llvm-project
+
+    mkdir -p src/flutter/buildtools/${constants.alt-platform}
+    ln -s ${llvm} src/flutter/buildtools/${constants.alt-platform}/clang
+    ln -s ${dart} src/third_party/dart/tools/sdks/dart-sdk
 
     ${lib.optionalString (stdenv.isLinux) ''
       for patchtool in ''${patchtools[@]}; do
@@ -198,9 +210,6 @@ stdenv.mkDerivation (finalAttrs: {
       popd
     done
 
-    mkdir -p src/flutter/buildtools/${constants.alt-platform}
-    ln -s ${llvm} src/flutter/buildtools/${constants.alt-platform}/clang
-
     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
diff --git a/pkgs/development/compilers/flutter/update/get-engine-swiftshader.nix.in b/pkgs/development/compilers/flutter/update/get-engine-swiftshader.nix.in
index 2dffbe950b86..aa71f8ae2ad3 100644
--- a/pkgs/development/compilers/flutter/update/get-engine-swiftshader.nix.in
+++ b/pkgs/development/compilers/flutter/update/get-engine-swiftshader.nix.in
@@ -2,4 +2,9 @@
 fetchgit {
   url = "https://swiftshader.googlesource.com/SwiftShader.git";
   rev = "@engine_swiftshader_rev@";
+
+  # Keep with in sync of pkgs/development/compilers/flutter/engine/package.nix
+  postFetch = ''
+    rm -rf $out/third_party/llvm-project
+  '';
 }
diff --git a/pkgs/development/compilers/flutter/versions/3_13/data.json b/pkgs/development/compilers/flutter/versions/3_13/data.json
index 9bd8b818bf46..1b61347b30f1 100644
--- a/pkgs/development/compilers/flutter/versions/3_13/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_13/data.json
@@ -1,7 +1,7 @@
 {
   "version": "3.13.8",
   "engineVersion": "767d8c75e898091b925519803830fc2721658d07",
-  "engineSwiftShaderHash": "sha256-N6f5aeDroqEwZlUBZi7nhDW8leE/7DqmOtRYOY4wzf4=",
+  "engineSwiftShaderHash": "sha256-qKf5gXIpI4+05bs7d3W6JlMNTn3vHFQL+i3JpFdyPao=",
   "engineSwiftShaderRev": "5f9ed9b16931c7155171d31f75004f73f0a3abc8",
   "channel": "stable",
   "engineHashes": {
diff --git a/pkgs/development/compilers/flutter/versions/3_16/data.json b/pkgs/development/compilers/flutter/versions/3_16/data.json
index 08cbdff5bc77..4c9142a149e9 100644
--- a/pkgs/development/compilers/flutter/versions/3_16/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_16/data.json
@@ -1,7 +1,7 @@
 {
   "version": "3.16.7",
   "engineVersion": "4a585b79294e830fa89c24924d58a27cc8fbf406",
-  "engineSwiftShaderHash": "sha256-N6f5aeDroqEwZlUBZi7nhDW8leE/7DqmOtRYOY4wzf4=",
+  "engineSwiftShaderHash": "sha256-qKf5gXIpI4+05bs7d3W6JlMNTn3vHFQL+i3JpFdyPao=",
   "engineSwiftShaderRev": "5f9ed9b16931c7155171d31f75004f73f0a3abc8",
   "channel": "stable",
   "engineHashes": {
diff --git a/pkgs/development/compilers/flutter/versions/3_19/data.json b/pkgs/development/compilers/flutter/versions/3_19/data.json
index 491447493db9..a05e0172ca44 100644
--- a/pkgs/development/compilers/flutter/versions/3_19/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_19/data.json
@@ -1,7 +1,7 @@
 {
   "version": "3.19.4",
   "engineVersion": "a5c24f538d05aaf66f7972fb23959d8cafb9f95a",
-  "engineSwiftShaderHash": "sha256-J8TKwbIQ7hdWCGIu1T//MJlRzT7OTVL0MG/dmMyutPQ=",
+  "engineSwiftShaderHash": "sha256-mRLCvhNkmHz7Rv6GzXkY7OB1opBSq+ATWZ466qZdgto=",
   "engineSwiftShaderRev": "2fa7e9b99ae4e70ea5ae2cc9c8d3afb43391384f",
   "channel": "stable",
   "engineHashes": {
diff --git a/pkgs/development/compilers/flutter/versions/3_22/data.json b/pkgs/development/compilers/flutter/versions/3_22/data.json
index 140b22bbcb1c..2abe37d9dac0 100644
--- a/pkgs/development/compilers/flutter/versions/3_22/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_22/data.json
@@ -1,7 +1,7 @@
 {
   "version": "3.22.2",
   "engineVersion": "edd8546116457bdf1c5bdfb13ecb9463d2bb5ed4",
-  "engineSwiftShaderHash": "sha256-J8TKwbIQ7hdWCGIu1T//MJlRzT7OTVL0MG/dmMyutPQ=",
+  "engineSwiftShaderHash": "sha256-mRLCvhNkmHz7Rv6GzXkY7OB1opBSq+ATWZ466qZdgto=",
   "engineSwiftShaderRev": "2fa7e9b99ae4e70ea5ae2cc9c8d3afb43391384f",
   "channel": "stable",
   "engineHashes": {
diff --git a/pkgs/development/compilers/flutter/versions/3_23/data.json b/pkgs/development/compilers/flutter/versions/3_23/data.json
index a4087fea903e..82233ea5112c 100644
--- a/pkgs/development/compilers/flutter/versions/3_23/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_23/data.json
@@ -1,7 +1,7 @@
 {
   "version": "3.23.0-0.1.pre",
   "engineVersion": "bb10c5466638e963479ba5e64e601e42d1a43447",
-  "engineSwiftShaderHash": "sha256-J8TKwbIQ7hdWCGIu1T//MJlRzT7OTVL0MG/dmMyutPQ=",
+  "engineSwiftShaderHash": "sha256-mRLCvhNkmHz7Rv6GzXkY7OB1opBSq+ATWZ466qZdgto=",
   "engineSwiftShaderRev": "2fa7e9b99ae4e70ea5ae2cc9c8d3afb43391384f",
   "channel": "beta",
   "engineHashes": {