diff --git a/script/tool/lib/src/analyze_command.dart b/script/tool/lib/src/analyze_command.dart
index c7a953c50ca..c8b576587d0 100644
--- a/script/tool/lib/src/analyze_command.dart
+++ b/script/tool/lib/src/analyze_command.dart
@@ -2,25 +2,21 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
-
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 import 'package:yaml/yaml.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// A command to run Dart analysis on packages.
 class AnalyzeCommand extends PackageLoopingCommand {
   /// Creates a analysis command instance.
   AnalyzeCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addMultiOption(_customAnalysisFlag,
         help:
             'Directories (comma separated) that are allowed to have their own '
diff --git a/script/tool/lib/src/build_examples_command.dart b/script/tool/lib/src/build_examples_command.dart
index 29af2e69ebd..5b5866ec03b 100644
--- a/script/tool/lib/src/build_examples_command.dart
+++ b/script/tool/lib/src/build_examples_command.dart
@@ -2,16 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
-
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 import 'package:yaml/yaml.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// Key for APK.
@@ -45,10 +41,10 @@ const String _flutterBuildTypeAndroidAlias = 'android';
 class BuildExamplesCommand extends PackageLoopingCommand {
   /// Creates an instance of the build command.
   BuildExamplesCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addFlag(platformLinux);
     argParser.addFlag(platformMacOS);
     argParser.addFlag(platformWeb);
diff --git a/script/tool/lib/src/common/package_looping_command.dart b/script/tool/lib/src/common/package_looping_command.dart
index 5462f5378c7..f014fb21ace 100644
--- a/script/tool/lib/src/common/package_looping_command.dart
+++ b/script/tool/lib/src/common/package_looping_command.dart
@@ -6,14 +6,11 @@ import 'dart:async';
 
 import 'package:colorize/colorize.dart';
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:path/path.dart' as p;
-import 'package:platform/platform.dart';
 import 'package:pub_semver/pub_semver.dart';
 
 import 'core.dart';
 import 'package_command.dart';
-import 'process_runner.dart';
 import 'repository_package.dart';
 
 /// Enumeration options for package looping commands.
@@ -85,12 +82,11 @@ class PackageResult {
 abstract class PackageLoopingCommand extends PackageCommand {
   /// Creates a command to operate on [packagesDir] with the given environment.
   PackageLoopingCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
-  }) : super(packagesDir,
-            processRunner: processRunner, platform: platform, gitDir: gitDir) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
+  }) {
     argParser.addOption(
       _skipByFlutterVersionArg,
       help: 'Skip any packages that require a Flutter version newer than '
diff --git a/script/tool/lib/src/custom_test_command.dart b/script/tool/lib/src/custom_test_command.dart
index dea77c70d9b..4042cd14a26 100644
--- a/script/tool/lib/src/custom_test_command.dart
+++ b/script/tool/lib/src/custom_test_command.dart
@@ -3,10 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/pub_utils.dart';
 import 'common/repository_package.dart';
 
@@ -21,10 +19,10 @@ const String _legacyScriptName = 'run_tests.sh';
 class CustomTestCommand extends PackageLoopingCommand {
   /// Creates a custom test command instance.
   CustomTestCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform);
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  });
 
   @override
   final String name = 'custom-test';
diff --git a/script/tool/lib/src/dart_test_command.dart b/script/tool/lib/src/dart_test_command.dart
index f34a3ebf4d6..5968ec2c946 100644
--- a/script/tool/lib/src/dart_test_command.dart
+++ b/script/tool/lib/src/dart_test_command.dart
@@ -3,12 +3,10 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/pub_utils.dart';
 import 'common/repository_package.dart';
 
@@ -16,10 +14,10 @@ import 'common/repository_package.dart';
 class DartTestCommand extends PackageLoopingCommand {
   /// Creates an instance of the test command.
   DartTestCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addOption(
       kEnableExperiment,
       defaultsTo: '',
diff --git a/script/tool/lib/src/dependabot_check_command.dart b/script/tool/lib/src/dependabot_check_command.dart
index d16fb33e92f..032ea32fca4 100644
--- a/script/tool/lib/src/dependabot_check_command.dart
+++ b/script/tool/lib/src/dependabot_check_command.dart
@@ -2,10 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
-
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:yaml/yaml.dart';
 
 import 'common/core.dart';
@@ -15,8 +12,7 @@ import 'common/repository_package.dart';
 /// A command to verify Dependabot configuration coverage of packages.
 class DependabotCheckCommand extends PackageLoopingCommand {
   /// Creates Dependabot check command instance.
-  DependabotCheckCommand(Directory packagesDir, {GitDir? gitDir})
-      : super(packagesDir, gitDir: gitDir) {
+  DependabotCheckCommand(super.packagesDir, {super.gitDir}) {
     argParser.addOption(_configPathFlag,
         help: 'Path to the Dependabot configuration file',
         defaultsTo: '.github/dependabot.yml');
diff --git a/script/tool/lib/src/drive_examples_command.dart b/script/tool/lib/src/drive_examples_command.dart
index 18354d83777..24acb9b43e9 100644
--- a/script/tool/lib/src/drive_examples_command.dart
+++ b/script/tool/lib/src/drive_examples_command.dart
@@ -2,17 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 const int _exitNoPlatformFlags = 2;
@@ -25,10 +22,10 @@ const int _chromeDriverPort = 4444;
 class DriveExamplesCommand extends PackageLoopingCommand {
   /// Creates an instance of the drive command.
   DriveExamplesCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addFlag(platformAndroid,
         help: 'Runs the Android implementation of the examples',
         aliases: const <String>[platformAndroidAlias]);
diff --git a/script/tool/lib/src/federation_safety_check_command.dart b/script/tool/lib/src/federation_safety_check_command.dart
index 837193b1ccc..ec4b98879d7 100644
--- a/script/tool/lib/src/federation_safety_check_command.dart
+++ b/script/tool/lib/src/federation_safety_check_command.dart
@@ -3,9 +3,7 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:path/path.dart' as p;
-import 'package:platform/platform.dart';
 import 'package:pub_semver/pub_semver.dart';
 
 import 'common/core.dart';
@@ -13,7 +11,6 @@ import 'common/file_utils.dart';
 import 'common/git_version_finder.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// A command to check that PRs don't violate repository best practices that
@@ -22,16 +19,11 @@ import 'common/repository_package.dart';
 class FederationSafetyCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the safety check command.
   FederationSafetyCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
-  }) : super(
-          packagesDir,
-          processRunner: processRunner,
-          platform: platform,
-          gitDir: gitDir,
-        );
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
+  });
 
   // A map of package name (as defined by the directory name of the package)
   // to a list of changed Dart files in that package, as Posix paths relative to
diff --git a/script/tool/lib/src/firebase_test_lab_command.dart b/script/tool/lib/src/firebase_test_lab_command.dart
index b679c1a27c5..07335959a2b 100644
--- a/script/tool/lib/src/firebase_test_lab_command.dart
+++ b/script/tool/lib/src/firebase_test_lab_command.dart
@@ -2,18 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
 import 'dart:io' as io;
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 import 'package:uuid/uuid.dart';
 
 import 'common/core.dart';
 import 'common/gradle.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 const int _exitGcloudAuthFailed = 2;
@@ -22,10 +19,10 @@ const int _exitGcloudAuthFailed = 2;
 class FirebaseTestLabCommand extends PackageLoopingCommand {
   /// Creates an instance of the test runner command.
   FirebaseTestLabCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addOption(
       'project',
       defaultsTo: 'flutter-cirrus',
diff --git a/script/tool/lib/src/fix_command.dart b/script/tool/lib/src/fix_command.dart
index 2819609eabb..a35508bcf8e 100644
--- a/script/tool/lib/src/fix_command.dart
+++ b/script/tool/lib/src/fix_command.dart
@@ -2,24 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
-
-import 'package:file/file.dart';
-import 'package:platform/platform.dart';
-
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// A command to run Dart's "fix" command on packages.
 class FixCommand extends PackageLoopingCommand {
   /// Creates a fix command instance.
   FixCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform);
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  });
 
   @override
   final String name = 'fix';
diff --git a/script/tool/lib/src/format_command.dart b/script/tool/lib/src/format_command.dart
index 30a5565f232..b7f1745f5e9 100644
--- a/script/tool/lib/src/format_command.dart
+++ b/script/tool/lib/src/format_command.dart
@@ -8,11 +8,9 @@ import 'dart:io' as io;
 import 'package:file/file.dart';
 import 'package:http/http.dart' as http;
 import 'package:meta/meta.dart';
-import 'package:platform/platform.dart';
 
 import 'common/core.dart';
 import 'common/package_command.dart';
-import 'common/process_runner.dart';
 
 /// In theory this should be 8191, but in practice that was still resulting in
 /// "The input line is too long" errors. This was chosen as a value that worked
@@ -40,10 +38,10 @@ final Uri _googleFormatterUrl = Uri.https('github.com',
 class FormatCommand extends PackageCommand {
   /// Creates an instance of the format command.
   FormatCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) {
     argParser.addFlag('fail-on-change', hide: true);
     argParser.addOption('clang-format',
         defaultsTo: 'clang-format', help: 'Path to "clang-format" executable.');
diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index cbce766b376..6eaaa0308f0 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -18,7 +18,7 @@ final Version minKotlinVersion = Version(1, 7, 10);
 /// A command to enforce gradle file conventions and best practices.
 class GradleCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the gradle check command.
-  GradleCheckCommand(Directory packagesDir) : super(packagesDir);
+  GradleCheckCommand(super.packagesDir);
 
   @override
   final String name = 'gradle-check';
diff --git a/script/tool/lib/src/license_check_command.dart b/script/tool/lib/src/license_check_command.dart
index a8d4a7be5f6..dcc8c2711ce 100644
--- a/script/tool/lib/src/license_check_command.dart
+++ b/script/tool/lib/src/license_check_command.dart
@@ -3,9 +3,7 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:path/path.dart' as p;
-import 'package:platform/platform.dart';
 
 import 'common/core.dart';
 import 'common/package_command.dart';
@@ -107,9 +105,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 /// Validates that code files have copyright and license blocks.
 class LicenseCheckCommand extends PackageCommand {
   /// Creates a new license check command for [packagesDir].
-  LicenseCheckCommand(Directory packagesDir,
-      {Platform platform = const LocalPlatform(), GitDir? gitDir})
-      : super(packagesDir, platform: platform, gitDir: gitDir);
+  LicenseCheckCommand(super.packagesDir, {super.platform, super.gitDir});
 
   @override
   final String name = 'license-check';
diff --git a/script/tool/lib/src/lint_android_command.dart b/script/tool/lib/src/lint_android_command.dart
index 9b875e78560..8d82baf7152 100644
--- a/script/tool/lib/src/lint_android_command.dart
+++ b/script/tool/lib/src/lint_android_command.dart
@@ -2,14 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:file/file.dart';
-import 'package:platform/platform.dart';
-
 import 'common/core.dart';
 import 'common/gradle.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// Run 'gradlew lint'.
@@ -18,10 +14,10 @@ import 'common/repository_package.dart';
 class LintAndroidCommand extends PackageLoopingCommand {
   /// Creates an instance of the linter command.
   LintAndroidCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform);
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  });
 
   @override
   final String name = 'lint-android';
diff --git a/script/tool/lib/src/list_command.dart b/script/tool/lib/src/list_command.dart
index b47657e47ef..f4becce078a 100644
--- a/script/tool/lib/src/list_command.dart
+++ b/script/tool/lib/src/list_command.dart
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 
 import 'common/package_command.dart';
 import 'common/repository_package.dart';
@@ -13,9 +12,9 @@ class ListCommand extends PackageCommand {
   /// Creates an instance of the list command, whose behavior depends on the
   /// 'type' argument it provides.
   ListCommand(
-    Directory packagesDir, {
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, platform: platform) {
+    super.packagesDir, {
+    super.platform,
+  }) {
     argParser.addOption(
       _type,
       defaultsTo: _package,
diff --git a/script/tool/lib/src/make_deps_path_based_command.dart b/script/tool/lib/src/make_deps_path_based_command.dart
index 8884a3deddc..9561dbb45ea 100644
--- a/script/tool/lib/src/make_deps_path_based_command.dart
+++ b/script/tool/lib/src/make_deps_path_based_command.dart
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:path/path.dart' as p;
 import 'package:pub_semver/pub_semver.dart';
 import 'package:pubspec_parse/pubspec_parse.dart';
@@ -28,9 +27,9 @@ class MakeDepsPathBasedCommand extends PackageCommand {
   /// Creates an instance of the command to convert selected dependencies to
   /// path-based.
   MakeDepsPathBasedCommand(
-    Directory packagesDir, {
-    GitDir? gitDir,
-  }) : super(packagesDir, gitDir: gitDir) {
+    super.packagesDir, {
+    super.gitDir,
+  }) {
     argParser.addMultiOption(_targetDependenciesArg,
         help:
             'The names of the packages to convert to path-based dependencies.\n'
diff --git a/script/tool/lib/src/native_test_command.dart b/script/tool/lib/src/native_test_command.dart
index 978c41bdf8c..7d7bc0405e8 100644
--- a/script/tool/lib/src/native_test_command.dart
+++ b/script/tool/lib/src/native_test_command.dart
@@ -4,14 +4,12 @@
 
 import 'package:file/file.dart';
 import 'package:meta/meta.dart';
-import 'package:platform/platform.dart';
 
 import 'common/cmake.dart';
 import 'common/core.dart';
 import 'common/gradle.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 import 'common/xcode.dart';
 
@@ -39,11 +37,10 @@ const String misconfiguredJavaIntegrationTestErrorExplanation =
 class NativeTestCommand extends PackageLoopingCommand {
   /// Creates an instance of the test command.
   NativeTestCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  })  : _xcode = Xcode(processRunner: processRunner, log: true),
-        super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) : _xcode = Xcode(processRunner: processRunner, log: true) {
     argParser.addOption(
       _iOSDestinationFlag,
       help: 'Specify the destination when running iOS tests.\n'
diff --git a/script/tool/lib/src/podspec_check_command.dart b/script/tool/lib/src/podspec_check_command.dart
index 9fcaa469955..31773122cd9 100644
--- a/script/tool/lib/src/podspec_check_command.dart
+++ b/script/tool/lib/src/podspec_check_command.dart
@@ -6,11 +6,9 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:file/file.dart';
-import 'package:platform/platform.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 const int _exitUnsupportedPlatform = 2;
@@ -22,10 +20,10 @@ const int _exitPodNotInstalled = 3;
 class PodspecCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the linter command.
   PodspecCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  }) : super(packagesDir, processRunner: processRunner, platform: platform);
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  });
 
   @override
   final String name = 'podspec-check';
diff --git a/script/tool/lib/src/publish_check_command.dart b/script/tool/lib/src/publish_check_command.dart
index 97656288988..79317323d66 100644
--- a/script/tool/lib/src/publish_check_command.dart
+++ b/script/tool/lib/src/publish_check_command.dart
@@ -6,14 +6,11 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io' as io;
 
-import 'package:file/file.dart';
 import 'package:http/http.dart' as http;
-import 'package:platform/platform.dart';
 import 'package:pub_semver/pub_semver.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/pub_utils.dart';
 import 'common/pub_version_finder.dart';
 import 'common/repository_package.dart';
@@ -22,13 +19,12 @@ import 'common/repository_package.dart';
 class PublishCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the publish command.
   PublishCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
     http.Client? httpClient,
-  })  : _pubVersionFinder =
-            PubVersionFinder(httpClient: httpClient ?? http.Client()),
-        super(packagesDir, processRunner: processRunner, platform: platform) {
+  }) : _pubVersionFinder =
+            PubVersionFinder(httpClient: httpClient ?? http.Client()) {
     argParser.addFlag(
       _allowPrereleaseFlag,
       help: 'Allows the pre-release SDK warning to pass.\n'
diff --git a/script/tool/lib/src/publish_command.dart b/script/tool/lib/src/publish_command.dart
index fb197ccd3ab..e8eadb7982e 100644
--- a/script/tool/lib/src/publish_command.dart
+++ b/script/tool/lib/src/publish_command.dart
@@ -20,7 +20,6 @@ import 'common/file_utils.dart';
 import 'common/git_version_finder.dart';
 import 'common/package_command.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/pub_version_finder.dart';
 import 'common/repository_package.dart';
 
@@ -49,17 +48,15 @@ class _RemoteInfo {
 class PublishCommand extends PackageLoopingCommand {
   /// Creates an instance of the publish command.
   PublishCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
     io.Stdin? stdinput,
-    GitDir? gitDir,
+    super.gitDir,
     http.Client? httpClient,
   })  : _pubVersionFinder =
             PubVersionFinder(httpClient: httpClient ?? http.Client()),
-        _stdin = stdinput ?? io.stdin,
-        super(packagesDir,
-            platform: platform, processRunner: processRunner, gitDir: gitDir) {
+        _stdin = stdinput ?? io.stdin {
     argParser.addMultiOption(_pubFlagsOption,
         help:
             'A list of options that will be forwarded on to pub. Separate multiple flags with commas.');
diff --git a/script/tool/lib/src/pubspec_check_command.dart b/script/tool/lib/src/pubspec_check_command.dart
index 838aac0541b..976e6b70678 100644
--- a/script/tool/lib/src/pubspec_check_command.dart
+++ b/script/tool/lib/src/pubspec_check_command.dart
@@ -3,16 +3,13 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:path/path.dart' as p;
-import 'package:platform/platform.dart';
 import 'package:pub_semver/pub_semver.dart';
 import 'package:pubspec_parse/pubspec_parse.dart';
 import 'package:yaml/yaml.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 /// A command to enforce pubspec conventions across the repository.
@@ -23,16 +20,11 @@ import 'common/repository_package.dart';
 class PubspecCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the version check command.
   PubspecCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
-  }) : super(
-          packagesDir,
-          processRunner: processRunner,
-          platform: platform,
-          gitDir: gitDir,
-        ) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
+  }) {
     argParser.addOption(
       _minMinFlutterVersionFlag,
       help:
diff --git a/script/tool/lib/src/readme_check_command.dart b/script/tool/lib/src/readme_check_command.dart
index 7e28979c956..81f401510f1 100644
--- a/script/tool/lib/src/readme_check_command.dart
+++ b/script/tool/lib/src/readme_check_command.dart
@@ -3,13 +3,10 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
-import 'package:platform/platform.dart';
 import 'package:yaml/yaml.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 
 const String _instructionWikiUrl =
@@ -19,16 +16,11 @@ const String _instructionWikiUrl =
 class ReadmeCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the README check command.
   ReadmeCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
-  }) : super(
-          packagesDir,
-          processRunner: processRunner,
-          platform: platform,
-          gitDir: gitDir,
-        ) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
+  }) {
     argParser.addFlag(_requireExcerptsArg,
         help: 'Require that Dart code blocks be managed by code-excerpt.');
   }
diff --git a/script/tool/lib/src/remove_dev_dependencies_command.dart b/script/tool/lib/src/remove_dev_dependencies_command.dart
index 3085e0df85e..0b74e79f00d 100644
--- a/script/tool/lib/src/remove_dev_dependencies_command.dart
+++ b/script/tool/lib/src/remove_dev_dependencies_command.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:file/file.dart';
 import 'package:yaml/yaml.dart';
 import 'package:yaml_edit/yaml_edit.dart';
 
@@ -16,7 +15,7 @@ import 'common/repository_package.dart';
 /// clients of the library, but not for development of the library.
 class RemoveDevDependenciesCommand extends PackageLoopingCommand {
   /// Creates a publish metadata updater command instance.
-  RemoveDevDependenciesCommand(Directory packagesDir) : super(packagesDir);
+  RemoveDevDependenciesCommand(super.packagesDir);
 
   @override
   final String name = 'remove-dev-dependencies';
diff --git a/script/tool/lib/src/update_dependency_command.dart b/script/tool/lib/src/update_dependency_command.dart
index d66d2f37451..106ff29743f 100644
--- a/script/tool/lib/src/update_dependency_command.dart
+++ b/script/tool/lib/src/update_dependency_command.dart
@@ -12,7 +12,6 @@ import 'package:yaml_edit/yaml_edit.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/pub_utils.dart';
 import 'common/pub_version_finder.dart';
 import 'common/repository_package.dart';
@@ -29,12 +28,11 @@ const int _exitNoTargetVersion = 4;
 class UpdateDependencyCommand extends PackageLoopingCommand {
   /// Creates an instance of the version check command.
   UpdateDependencyCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
+    super.packagesDir, {
+    super.processRunner,
     http.Client? httpClient,
-  })  : _pubVersionFinder =
-            PubVersionFinder(httpClient: httpClient ?? http.Client()),
-        super(packagesDir, processRunner: processRunner) {
+  }) : _pubVersionFinder =
+            PubVersionFinder(httpClient: httpClient ?? http.Client()) {
     argParser.addOption(
       _pubPackageFlag,
       help: 'A pub package to update.',
diff --git a/script/tool/lib/src/update_excerpts_command.dart b/script/tool/lib/src/update_excerpts_command.dart
index fec5c3482fd..b57f56b1886 100644
--- a/script/tool/lib/src/update_excerpts_command.dart
+++ b/script/tool/lib/src/update_excerpts_command.dart
@@ -5,15 +5,12 @@
 import 'dart:io' as io;
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:meta/meta.dart';
-import 'package:platform/platform.dart';
 import 'package:yaml/yaml.dart';
 import 'package:yaml_edit/yaml_edit.dart';
 
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
-import 'common/process_runner.dart';
 import 'common/pub_utils.dart';
 import 'common/repository_package.dart';
 
@@ -21,16 +18,11 @@ import 'common/repository_package.dart';
 class UpdateExcerptsCommand extends PackageLoopingCommand {
   /// Creates a excerpt updater command instance.
   UpdateExcerptsCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
-  }) : super(
-          packagesDir,
-          processRunner: processRunner,
-          platform: platform,
-          gitDir: gitDir,
-        ) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
+  }) {
     argParser.addFlag(_failOnChangeFlag, hide: true);
     argParser.addFlag(_noCleanupFlag,
         help: 'Skips the step of cleaning up the excerpt extraction output. '
diff --git a/script/tool/lib/src/update_min_sdk_command.dart b/script/tool/lib/src/update_min_sdk_command.dart
index e75b4fe0543..fd4a344b683 100644
--- a/script/tool/lib/src/update_min_sdk_command.dart
+++ b/script/tool/lib/src/update_min_sdk_command.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:file/file.dart';
 import 'package:pub_semver/pub_semver.dart';
 import 'package:yaml_edit/yaml_edit.dart';
 
@@ -15,7 +14,7 @@ const int _exitUnknownVersion = 3;
 /// A command to update the minimum Flutter and Dart SDKs of packages.
 class UpdateMinSdkCommand extends PackageLoopingCommand {
   /// Creates a publish metadata updater command instance.
-  UpdateMinSdkCommand(Directory packagesDir) : super(packagesDir) {
+  UpdateMinSdkCommand(super.packagesDir) {
     argParser.addOption(_flutterMinFlag,
         mandatory: true,
         help: 'The minimum version of Flutter to set SDK constraints to.');
diff --git a/script/tool/lib/src/update_release_info_command.dart b/script/tool/lib/src/update_release_info_command.dart
index 240ae72eed7..92d11082344 100644
--- a/script/tool/lib/src/update_release_info_command.dart
+++ b/script/tool/lib/src/update_release_info_command.dart
@@ -4,7 +4,6 @@
 
 import 'package:args/command_runner.dart';
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:pub_semver/pub_semver.dart';
 import 'package:yaml_edit/yaml_edit.dart';
 
@@ -36,9 +35,9 @@ enum _ChangelogUpdateState {
 class UpdateReleaseInfoCommand extends PackageLoopingCommand {
   /// Creates a publish metadata updater command instance.
   UpdateReleaseInfoCommand(
-    Directory packagesDir, {
-    GitDir? gitDir,
-  }) : super(packagesDir, gitDir: gitDir) {
+    super.packagesDir, {
+    super.gitDir,
+  }) {
     argParser.addOption(_changelogFlag,
         mandatory: true,
         help: 'The changelog entry to add. '
diff --git a/script/tool/lib/src/version_check_command.dart b/script/tool/lib/src/version_check_command.dart
index a2ea016c331..acaf510b7b8 100644
--- a/script/tool/lib/src/version_check_command.dart
+++ b/script/tool/lib/src/version_check_command.dart
@@ -3,18 +3,15 @@
 // found in the LICENSE file.
 
 import 'package:file/file.dart';
-import 'package:git/git.dart';
 import 'package:http/http.dart' as http;
 import 'package:meta/meta.dart';
 import 'package:path/path.dart' as p;
-import 'package:platform/platform.dart';
 import 'package:pub_semver/pub_semver.dart';
 
 import 'common/core.dart';
 import 'common/git_version_finder.dart';
 import 'common/package_looping_command.dart';
 import 'common/package_state_utils.dart';
-import 'common/process_runner.dart';
 import 'common/pub_version_finder.dart';
 import 'common/repository_package.dart';
 
@@ -98,19 +95,13 @@ Map<Version, NextVersionType> getAllowedNextVersions(
 class VersionCheckCommand extends PackageLoopingCommand {
   /// Creates an instance of the version check command.
   VersionCheckCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
     http.Client? httpClient,
-  })  : _pubVersionFinder =
-            PubVersionFinder(httpClient: httpClient ?? http.Client()),
-        super(
-          packagesDir,
-          processRunner: processRunner,
-          platform: platform,
-          gitDir: gitDir,
-        ) {
+  }) : _pubVersionFinder =
+            PubVersionFinder(httpClient: httpClient ?? http.Client()) {
     argParser.addFlag(
       _againstPubFlag,
       help: 'Whether the version check should run against the version on pub.\n'
diff --git a/script/tool/lib/src/xcode_analyze_command.dart b/script/tool/lib/src/xcode_analyze_command.dart
index 7a9a5953f52..f953bf879e3 100644
--- a/script/tool/lib/src/xcode_analyze_command.dart
+++ b/script/tool/lib/src/xcode_analyze_command.dart
@@ -2,13 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:file/file.dart';
-import 'package:platform/platform.dart';
-
 import 'common/core.dart';
 import 'common/package_looping_command.dart';
 import 'common/plugin_utils.dart';
-import 'common/process_runner.dart';
 import 'common/repository_package.dart';
 import 'common/xcode.dart';
 
@@ -16,11 +12,10 @@ import 'common/xcode.dart';
 class XcodeAnalyzeCommand extends PackageLoopingCommand {
   /// Creates an instance of the test command.
   XcodeAnalyzeCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-  })  : _xcode = Xcode(processRunner: processRunner, log: true),
-        super(packagesDir, processRunner: processRunner, platform: platform) {
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+  }) : _xcode = Xcode(processRunner: processRunner, log: true) {
     argParser.addFlag(platformIOS, help: 'Analyze iOS');
     argParser.addFlag(platformMacOS, help: 'Analyze macOS');
     argParser.addOption(_minIOSVersionArg,
diff --git a/script/tool/pubspec.yaml b/script/tool/pubspec.yaml
index 925d4b60697..cfc95ba4db5 100644
--- a/script/tool/pubspec.yaml
+++ b/script/tool/pubspec.yaml
@@ -31,4 +31,4 @@ dev_dependencies:
   mockito: '>=5.3.2 <=5.4.0'
 
 environment:
-  sdk: '>=2.14.0 <4.0.0'
+  sdk: '>=2.18.0 <4.0.0'
diff --git a/script/tool/test/common/package_command_test.dart b/script/tool/test/common/package_command_test.dart
index e907829f594..ed0e905ee5e 100644
--- a/script/tool/test/common/package_command_test.dart
+++ b/script/tool/test/common/package_command_test.dart
@@ -7,11 +7,9 @@ import 'package:file/file.dart';
 import 'package:file/memory.dart';
 import 'package:flutter_plugin_tools/src/common/core.dart';
 import 'package:flutter_plugin_tools/src/common/package_command.dart';
-import 'package:flutter_plugin_tools/src/common/process_runner.dart';
 import 'package:git/git.dart';
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
-import 'package:platform/platform.dart';
 import 'package:test/test.dart';
 
 import '../mocks.dart';
@@ -1270,13 +1268,12 @@ packages/b_package/lib/src/foo.dart
 
 class SamplePackageCommand extends PackageCommand {
   SamplePackageCommand(
-    Directory packagesDir, {
-    ProcessRunner processRunner = const ProcessRunner(),
-    Platform platform = const LocalPlatform(),
-    GitDir? gitDir,
+    super.packagesDir, {
+    super.processRunner,
+    super.platform,
+    super.gitDir,
     this.includeSubpackages = false,
-  }) : super(packagesDir,
-            processRunner: processRunner, platform: platform, gitDir: gitDir);
+  });
 
   final List<String> plugins = <String>[];
 
diff --git a/script/tool/test/common/package_looping_command_test.dart b/script/tool/test/common/package_looping_command_test.dart
index 043fa0a77ce..32d18376a5d 100644
--- a/script/tool/test/common/package_looping_command_test.dart
+++ b/script/tool/test/common/package_looping_command_test.dart
@@ -10,10 +10,7 @@ import 'package:file/file.dart';
 import 'package:file/memory.dart';
 import 'package:flutter_plugin_tools/src/common/core.dart';
 import 'package:flutter_plugin_tools/src/common/package_looping_command.dart';
-import 'package:flutter_plugin_tools/src/common/process_runner.dart';
-import 'package:git/git.dart';
 import 'package:mockito/mockito.dart';
-import 'package:platform/platform.dart';
 import 'package:test/test.dart';
 
 import '../mocks.dart';
@@ -852,8 +849,8 @@ void main() {
 
 class TestPackageLoopingCommand extends PackageLoopingCommand {
   TestPackageLoopingCommand(
-    Directory packagesDir, {
-    required Platform platform,
+    super.packagesDir, {
+    required super.platform,
     this.hasLongOutput = true,
     this.packageLoopingType = PackageLoopingType.topLevelOnly,
     this.customFailureListHeader,
@@ -862,10 +859,9 @@ class TestPackageLoopingCommand extends PackageLoopingCommand {
     this.warnsDuringInit = false,
     this.warnsDuringCleanup = false,
     this.captureOutput = false,
-    ProcessRunner processRunner = const ProcessRunner(),
-    GitDir? gitDir,
-  }) : super(packagesDir,
-            processRunner: processRunner, platform: platform, gitDir: gitDir);
+    super.processRunner,
+    super.gitDir,
+  });
 
   final List<String> checkedPackages = <String>[];
   final List<String> capturedOutput = <String>[];
diff --git a/script/tool/test/common/plugin_utils_test.dart b/script/tool/test/common/plugin_utils_test.dart
index 415b1db8932..ff2ff6a3953 100644
--- a/script/tool/test/common/plugin_utils_test.dart
+++ b/script/tool/test/common/plugin_utils_test.dart
@@ -223,9 +223,12 @@ void main() {
         'plugin',
         packagesDir,
         platformSupport: <String, PlatformDetails>{
-          platformLinux: const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
-          platformMacOS: const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
-          platformWindows: const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
+          platformLinux:
+              const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
+          platformMacOS:
+              const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
+          platformWindows:
+              const PlatformDetails(PlatformSupport.inline, hasDartCode: true),
         },
       );