Add note to doctor validator if script is running Rosetta (#101309)

Author: jmagman

packages/flutter_tools/lib/src/base/os.dart

@@ -372,10 +372,16 @@ class _MacOSUtils extends _PosixUtils {
         _processUtils.runSync(<String>['sw_vers', '-productName']),
         _processUtils.runSync(<String>['sw_vers', '-productVersion']),
         _processUtils.runSync(<String>['sw_vers', '-buildVersion']),
+        _processUtils.runSync(<String>['uname', '-m']),
       ];
       if (results.every((RunResult result) => result.exitCode == 0)) {
+        String osName = getNameForHostPlatform(hostPlatform);
+        // If the script is running in Rosetta, "uname -m" will return x86_64.
+        if (hostPlatform == HostPlatform.darwin_arm && results[3].stdout.contains('x86_64')) {
+          osName = '$osName (Rosetta)';
+        }
         _name =
-            '${results[0].stdout.trim()} ${results[1].stdout.trim()} ${results[2].stdout.trim()} ${getNameForHostPlatform(hostPlatform)}';
+            '${results[0].stdout.trim()} ${results[1].stdout.trim()} ${results[2].stdout.trim()} $osName';
       }
       _name ??= super.name;
     }

packages/flutter_tools/test/general.shard/base/os_test.dart

@@ -311,6 +311,13 @@ void main() {
           ],
           stdout: 'build',
         ),
+        const FakeCommand(
+          command: <String>[
+            'uname',
+            '-m',
+          ],
+          stdout: 'arm64',
+        ),
         const FakeCommand(
           command: <String>[
             'which',
@@ -331,6 +338,56 @@ void main() {
       expect(utils.name, 'product version build darwin-arm');
     });
 
+    testWithoutContext('macOS ARM on Rosetta name', () async {
+      fakeProcessManager.addCommands(<FakeCommand>[
+        const FakeCommand(
+          command: <String>[
+            'sw_vers',
+            '-productName',
+          ],
+          stdout: 'product',
+        ),
+        const FakeCommand(
+          command: <String>[
+            'sw_vers',
+            '-productVersion',
+          ],
+          stdout: 'version',
+        ),
+        const FakeCommand(
+          command: <String>[
+            'sw_vers',
+            '-buildVersion',
+          ],
+          stdout: 'build',
+        ),
+        const FakeCommand(
+          command: <String>[
+            'uname',
+            '-m',
+          ],
+          stdout: 'x86_64', // Running on Rosetta
+        ),
+        const FakeCommand(
+          command: <String>[
+            'which',
+            'sysctl',
+          ],
+        ),
+        const FakeCommand(
+          command: <String>[
+            'sysctl',
+            'hw.optional.arm64',
+          ],
+          stdout: 'hw.optional.arm64: 1',
+        ),
+      ]);
+
+      final OperatingSystemUtils utils =
+      createOSUtils(FakePlatform(operatingSystem: 'macos'));
+      expect(utils.name, 'product version build darwin-arm (Rosetta)');
+    });
+
     testWithoutContext('macOS x86 name', () async {
       fakeProcessManager.addCommands(<FakeCommand>[
         const FakeCommand(
@@ -354,6 +411,13 @@ void main() {
           ],
           stdout: 'build',
         ),
+        const FakeCommand(
+          command: <String>[
+            'uname',
+            '-m',
+          ],
+          stdout: 'x86_64',
+        ),
         const FakeCommand(
           command: <String>[
             'which',