flutter326: init at 3.26.0-0.1pre (#347124)

pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix

@@ -59,15 +59,22 @@ runCommand "flutter-artifacts-${flutterPlatform}-${systemPlatform}"
   passthru = {
     inherit flutterPlatform;
   };
-} ''
+} (''
   export FLUTTER_ROOT="$NIX_BUILD_TOP"
   lndir -silent '${flutter'}' "$FLUTTER_ROOT"
   rm -rf "$FLUTTER_ROOT/bin/cache"
   mkdir "$FLUTTER_ROOT/bin/cache"
+'' + lib.optionalString (lib.versionAtLeast flutter'.version "3.26") ''
+  mkdir "$FLUTTER_ROOT/bin/cache/dart-sdk"
+  lndir -silent '${flutter'}/bin/cache/dart-sdk' "$FLUTTER_ROOT/bin/cache/dart-sdk"
+'' + ''
 
   HOME="$(mktemp -d)" flutter precache -v '--${flutterPlatform}' ${builtins.concatStringsSep " " (map (p: "'--no-${p}'") (lib.remove flutterPlatform flutterPlatforms))}
   rm -rf "$FLUTTER_ROOT/bin/cache/lockfile"
+'' + lib.optionalString (lib.versionAtLeast flutter'.version "3.26") ''
+  rm -rf "$FLUTTER_ROOT/bin/cache/dart-sdk"
+'' + ''
   find "$FLUTTER_ROOT" -type l -lname '${flutter'}/*' -delete
 
   cp -r bin/cache "$out"
-''
+'')

pkgs/development/compilers/flutter/artifacts/prepare-artifacts.nix

@@ -16,6 +16,7 @@
 
     mkdir -p "$out/bin"
     cp -r . "$out/bin/cache"
+    rm -f "$out/bin/cache/flutter.version.json"
 
     runHook postInstall
   '';

pkgs/development/compilers/flutter/versions/3_26/patches/deregister-pub-dependencies-artifact.patch

@@ -0,0 +1,19 @@
+diff --git a/packages/flutter_tools/lib/src/flutter_cache.dart b/packages/flutter_tools/lib/src/flutter_cache.dart
+index 252021cf78..e50ef0885d 100644
+--- a/packages/flutter_tools/lib/src/flutter_cache.dart
++++ b/packages/flutter_tools/lib/src/flutter_cache.dart
+@@ -51,14 +51,6 @@ class FlutterCache extends Cache {
+       registerArtifact(IosUsbArtifacts(artifactName, this, platform: platform));
+     }
+     registerArtifact(FontSubsetArtifacts(this, platform: platform));
+-    registerArtifact(PubDependencies(
+-      logger: logger,
+-      // flutter root and pub must be lazily initialized to avoid accessing
+-      // before the version is determined.
+-      flutterRoot: () => Cache.flutterRoot!,
+-      pub: () => pub,
+-      projectFactory: projectFactory,
+-    ));
+   }
+ }
+ 

pkgs/development/compilers/flutter/versions/3_26/patches/disable-auto-update.patch

@@ -0,0 +1,30 @@
+diff --git a/packages/flutter_tools/lib/src/runner/flutter_command.dart b/packages/flutter_tools/lib/src/runner/flutter_command.dart
+index e4e474ab6e..5548599802 100644
+--- a/packages/flutter_tools/lib/src/runner/flutter_command.dart
++++ b/packages/flutter_tools/lib/src/runner/flutter_command.dart
+@@ -1693,7 +1693,7 @@ Run 'flutter -h' (or 'flutter <command> -h') for available flutter commands and
+ 
+     // Populate the cache. We call this before pub get below so that the
+     // sky_engine package is available in the flutter cache for pub to find.
+-    if (shouldUpdateCache) {
++    if (false) {
+       // First always update universal artifacts, as some of these (e.g.
+       // ios-deploy on macOS) are required to determine `requiredArtifacts`.
+       final bool offline;
+diff --git a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
+index 50783f8435..db94062840 100644
+--- a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
++++ b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
+@@ -377,11 +377,7 @@ class FlutterCommandRunner extends CommandRunner<void> {
+           globals.analytics.suppressTelemetry();
+         }
+ 
+-        globals.flutterVersion.ensureVersionFile();
+         final bool machineFlag = topLevelResults[FlutterGlobalOptions.kMachineFlag] as bool? ?? false;
+-        if (await _shouldCheckForUpdates(topLevelResults, topLevelMachineFlag: machineFlag)) {
+-          await globals.flutterVersion.checkFlutterVersionFreshness();
+-        }
+ 
+         // See if the user specified a specific device.
+         final String? specifiedDeviceId = topLevelResults[FlutterGlobalOptions.kDeviceIdOption] as String?;
+

pkgs/development/compilers/flutter/versions/3_26/patches/fix-ios-build-xcode-backend-sh.patch

@@ -0,0 +1,69 @@
+From 6df275df3b8694daf16302b407520e3b1dee6724 Mon Sep 17 00:00:00 2001
+From: Philip Hayes <philiphayes9@gmail.com>
+Date: Thu, 12 Sep 2024 13:23:00 -0700
+Subject: [PATCH] fix: cleanup xcode_backend.sh to fix iOS build w/
+ `NixOS/nixpkgs` flutter
+
+This patch cleans up `xcode_backend.sh`. It now effectively just runs
+`exec $FLUTTER_ROOT/bin/dart ./xcode_backend.dart`.
+
+The previous `xcode_backend.sh` tries to discover `$FLUTTER_ROOT` from
+argv[0], even though its presence is already guaranteed (the wrapped
+`xcode_backend.dart` also relies on this env).
+
+When using nixpkgs flutter, the flutter SDK directory is composed of several
+layers, joined together using symlinks (called a `symlinkJoin`). Without this
+patch, the auto-discover traverses the symlinks into the wrong layer, and so it
+uses an "unwrapped" `dart` command instead of a "wrapped" dart that sets some
+important envs/flags (like `$FLUTTER_ROOT`).
+
+Using the "unwrapped" dart then manifests in this error when compiling, since
+it doesn't see the ios build-support artifacts:
+
+```
+$ flutter run -d iphone
+Running Xcode build...
+Xcode build done.                                            6.4s
+Failed to build iOS app
+Error (Xcode): Target debug_unpack_ios failed: Error: Flutter failed to create a directory at "/<nix-store>/XXXX-flutter-3.24.1-unwrapped/bin/cache/artifacts".
+```
+---
+ packages/flutter_tools/bin/xcode_backend.sh | 25 ++++-----------------
+ 1 file changed, 4 insertions(+), 21 deletions(-)
+
+diff --git a/packages/flutter_tools/bin/xcode_backend.sh b/packages/flutter_tools/bin/xcode_backend.sh
+index 2889d7c8e4..48b9d06c6e 100755
+--- a/packages/flutter_tools/bin/xcode_backend.sh
++++ b/packages/flutter_tools/bin/xcode_backend.sh
+@@ -6,24 +6,7 @@
+ # exit on error, or usage of unset var
+ set -euo pipefail
+ 
+-# Needed because if it is set, cd may print the path it changed to.
+-unset CDPATH
+-
+-function follow_links() (
+-  cd -P "$(dirname -- "$1")"
+-  file="$PWD/$(basename -- "$1")"
+-  while [[ -h "$file" ]]; do
+-    cd -P "$(dirname -- "$file")"
+-    file="$(readlink -- "$file")"
+-    cd -P "$(dirname -- "$file")"
+-    file="$PWD/$(basename -- "$file")"
+-  done
+-  echo "$file"
+-)
+-
+-PROG_NAME="$(follow_links "${BASH_SOURCE[0]}")"
+-BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
+-FLUTTER_ROOT="$BIN_DIR/../../.."
+-DART="$FLUTTER_ROOT/bin/dart"
+-
+-"$DART" "$BIN_DIR/xcode_backend.dart" "$@"
++# Run `dart ./xcode_backend.dart` with the dart from $FLUTTER_ROOT.
++dart="${FLUTTER_ROOT}/bin/dart"
++xcode_backend_dart="${BASH_SOURCE[0]%.sh}.dart"
++exec "${dart}" "${xcode_backend_dart}" "$@"
+-- 
+2.46.0
+

pkgs/development/compilers/flutter/versions/3_26/patches/gradle-flutter-tools-wrapper.patch

@@ -0,0 +1,44 @@
+This patch introduces an intermediate Gradle build step to alter the behavior
+of flutter_tools' Gradle project, specifically moving the creation of `build`
+and `.gradle` directories from within the Nix Store to somewhere in `$HOME/.cache/flutter/nix-flutter-tools-gradle/$engineShortRev`.
+
+Without this patch, flutter_tools' Gradle project tries to generate `build` and `.gradle`
+directories within the Nix Store. Resulting in read-only errors when trying to build a
+Flutter Android app at runtime.
+
+This patch takes advantage of the fact settings.gradle takes priority over settings.gradle.kts to build the intermediate Gradle project
+when a Flutter app runs `includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")`
+
+`rootProject.buildFileName = "/dev/null"` so that the intermediate project doesn't use `build.gradle.kts` that's in the same directory.
+
+The intermediate project makes a `settings.gradle` file in `$HOME/.cache/flutter/nix-flutter-tools-gradle/<short engine rev>/` and `includeBuild`s it.
+This Gradle project will build the actual `packages/flutter_tools/gradle` project by setting
+`rootProject.projectDir = new File("$settingsDir")` and `apply from: new File("$settingsDir/settings.gradle.kts")`.
+
+Now the `.gradle` will be built in `$HOME/.cache/flutter/nix-flutter-tools-gradle/<short engine rev>/`, but `build` doesn't.
+To move `build` to `$HOME/.cache/flutter/nix-flutter-tools-gradle/<short engine rev>/` as well, we need to set `buildDirectory`.
+diff --git a/packages/flutter_tools/gradle/settings.gradle b/packages/flutter_tools/gradle/settings.gradle
+new file mode 100644
+index 0000000000..b2485c94b4
+--- /dev/null
++++ b/packages/flutter_tools/gradle/settings.gradle
+@@ -0,0 +1,19 @@
++rootProject.buildFileName = "/dev/null"
++
++def engineShortRev = (new File("$settingsDir/../../../bin/internal/engine.version")).text.take(10)
++def dir = new File("$System.env.HOME/.cache/flutter/nix-flutter-tools-gradle/$engineShortRev")
++dir.mkdirs()
++def file = new File(dir, "settings.gradle")
++
++file.text = """
++rootProject.projectDir = new File("$settingsDir")
++apply from: new File("$settingsDir/settings.gradle.kts")
++
++gradle.allprojects { project ->
++  project.beforeEvaluate {
++    project.layout.buildDirectory = new File("$dir/build")
++  }
++}
++"""
++
++includeBuild(dir)

pkgs/top-level/all-packages.nix

@@ -14543,6 +14543,7 @@ with pkgs;
   flutterPackages-source = recurseIntoAttrs (callPackage ../development/compilers/flutter { useNixpkgsEngine = true; });
   flutterPackages = flutterPackages-bin;
   flutter = flutterPackages.stable;
+  flutter326 = flutterPackages.v3_26;
   flutter324 = flutterPackages.v3_24;
   flutter319 = flutterPackages.v3_19;