[deps] add a dep on the new dart-lang/core monorepo

Change-Id: I7af5f1d9239ca45fbb8dd562bb4dccceacac1a23
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/390581
Reviewed-by: Nate Bosch <[email protected]>
Commit-Queue: Devon Carew <[email protected]>

DEPS

@@ -8,7 +8,7 @@
 #
 # Packages can be rolled to the latest version with `tools/manage_deps.dart`.
 #
-# For example
+# For example:
 #
 #     dart tools/manage_deps.dart bump third_party/pkg/dart_style
 
@@ -131,6 +131,7 @@ vars = {
   "clock_rev": "7956d60042f4ea979c4554d43eeb57d087627869",
   "collection_rev": "887b826b50f48d6a9cd2c0684aa353e8e3a0fad0",
   "convert_rev": "d361833e117cb2438d2a2a6d0b0acb28ff0910fb",
+  "core_rev": "279afbcda95f4e0a39e44ab82f9c60eeb70d7514",
   "crypto_rev": "3d26ef4cf22d4b218ba30e616544ad3cf52f64a1",
   "csslib_rev": "a3700b05bbcc42782e8a7024790dbf019d89c249",
   # Note: Updates to dart_style have to be coordinated with the infrastructure
@@ -406,6 +407,8 @@ deps = {
       Var("dart_git") + "collection.git" + "@" + Var("collection_rev"),
   Var("dart_root") + "/third_party/pkg/convert":
       Var("dart_git") + "convert.git" + "@" + Var("convert_rev"),
+  Var("dart_root") + "/third_party/pkg/core":
+      Var("dart_git") + "core.git" + "@" + Var("core_rev"),
   Var("dart_root") + "/third_party/pkg/crypto":
       Var("dart_git") + "crypto.git" + "@" + Var("crypto_rev"),
   Var("dart_root") + "/third_party/pkg/csslib":

tools/generate_package_config.dart

@@ -88,31 +88,30 @@ void main(List<String> args) {
   ];
   packages.sort((a, b) => a.name.compareTo(b.name));
 
-  // TODO(devoncarew): Temporarily ignore the second package:file and
-  // package:file_testing locations.
-  packages.removeWhere((p) {
-    final path = posix(p.rootUri);
-    return path == 'third_party/pkg/file/packages/file' ||
-        path == 'third_party/pkg/file/packages/file_testing';
-  });
-
-  // Remove any packages with identical names.
+  // Check for duplicate packages - the same package sourced from multiple
+  // repositories.
   final uniqueNames = packages.map((p) => p.name).toSet();
 
   var hasDuplicatePackages = false;
 
   for (var name in uniqueNames) {
-    var matches = [
-      for (final p in packages)
-        if (p.name == name) p
-    ];
+    var matches = packages.where((p) => p.name == name).toList();
     if (matches.length > 1) {
-      print('Duplicates found for package:$name');
-      for (var package in matches) {
-        print('  ${package.rootUri}');
+      final inMonorepos = matches.where((p) => p.inMonorepo).toList();
+
+      if (inMonorepos.length == 1) {
+        // De-duplicating package 'name' - select just the monorepo version.
+        packages.removeWhere((p) {
+          return p.name == name && !p.inMonorepo;
+        });
+      } else {
+        print('Duplicates found for package:$name');
+        for (var package in matches) {
+          print('  ${package.rootUri}');
+        }
+
+        hasDuplicatePackages = true;
       }
-
-      hasDuplicatePackages = true;
     }
   }
 
@@ -300,6 +299,14 @@ class Package {
     this.languageVersion,
   });
 
+  /// Whether this package lives in a monorepo.
+  bool get inMonorepo {
+    // By convention (and for our purposes), a monorepo package lives in a
+    // `pkgs` directory.
+    final paths = posix(rootUri).split('/');
+    return paths.length >= 2 && paths[paths.length - 2] == 'pkgs';
+  }
+
   Map<String, Object?> toMap(String relativeTo) {
     return {
       'name': name,

tools/package_deps/bin/package_deps.dart

@@ -453,8 +453,6 @@ class SdkDeps {
     _findPackages(Directory('pkg'));
     _findPackages(Directory(path.join('third_party', 'devtools')));
     _findPackages(Directory(path.join('third_party', 'pkg')));
-    _findPackages(
-        Directory(path.join('third_party', 'pkg', 'file', 'packages')));
 
     if (verbose) {
       print('Package versions in the SDK:');