🔨 Adds Melos Packages script

.gitignore

@@ -5,7 +5,7 @@
 .example/flutter.png
 build/
 # Remove the following pattern if you wish to check in your lock file
-**/pubspec.lock
+pubspec.lock
 
 # Directory created by dartdoc
 doc/api/

pubspec.yaml

@@ -7,4 +7,7 @@ environment:
 
 dev_dependencies:
   lints: any
-  melos: ^3.1.0
+  melos: any
+  cli_util: any # Required by custom melos command.
+  pub_semver: any # Required by custom melos command.
+  yaml: any # Required by custom melos command.

scripts/melos_packages.dart

@@ -0,0 +1,76 @@
+import 'dart:io';
+
+import 'package:cli_util/cli_logging.dart' show Logger;
+import 'package:melos/melos.dart'
+    show MelosLogger, MelosWorkspace, MelosWorkspaceConfig;
+import 'package:pub_semver/pub_semver.dart';
+import 'package:yaml/yaml.dart';
+
+void main(List<String> arguments) async {
+  final root = Platform.environment['MELOS_ROOT_PATH'] as String;
+  final config = MelosWorkspaceConfig.fromYaml(
+    loadYamlNode(
+      File('$root/melos.yaml').readAsStringSync(),
+    ).toPlainObject() as Map,
+    path: root,
+  );
+  final workspace = await MelosWorkspace.fromConfig(
+    config,
+    logger: MelosLogger(Logger.standard()),
+  );
+  final packages = workspace.filteredPackages.values;
+  final current = Version.parse(
+    RegExp(r'\d*\.\d*\.\d*').firstMatch(Platform.version)!.group(0)!,
+  );
+  if (arguments.first == 'true') {
+    final satisfiedPackages = packages
+        .map(
+          (package) {
+            if (package.pubSpec.environment!.sdkConstraint!.allows(current)) {
+              return package.name;
+            }
+            return null;
+          },
+        )
+        .whereType<String>()
+        .join(',');
+    print(satisfiedPackages);
+  } else {
+    final ignoresPackages = packages
+        .map(
+          (package) {
+            if (package.pubSpec.environment!.sdkConstraint!.allows(current)) {
+              return null;
+            }
+            return package.name;
+          },
+        )
+        .whereType<String>()
+        .map((e) => '--ignore="$e"')
+        .join(' ');
+    print(ignoresPackages);
+  }
+}
+
+extension YamlUtils on YamlNode {
+  /// Converts a YAML node to a regular mutable Dart object.
+  Object? toPlainObject() {
+    final node = this;
+    if (node is YamlScalar) {
+      return node.value;
+    }
+    if (node is YamlMap) {
+      return {
+        for (final entry in node.nodes.entries)
+          (entry.key as YamlNode).toPlainObject(): entry.value.toPlainObject(),
+      };
+    }
+    if (node is YamlList) {
+      return node.nodes.map((node) => node.toPlainObject()).toList();
+    }
+    throw FormatException(
+      'Unsupported YAML node type encountered: ${node.runtimeType}',
+      this,
+    );
+  }
+}