Pick the correct version for packages bundled in the IDE

See #28

arduino/cores/packagemanager/loader.go

@@ -164,6 +164,7 @@ func (pm *PackageManager) loadPlatforms(targetPackage *cores.Package, packageDir
 		} else if exist {
 
 			// case: ARCHITECTURE/boards.txt
+			// this is the general case for unversioned Platform
 			version := semver.MustParse("")
 
 			// FIXME: this check is duplicated, find a better way to handle this
@@ -173,6 +174,34 @@ func (pm *PackageManager) loadPlatforms(targetPackage *cores.Package, packageDir
 				continue
 			}
 
+			// check if package_bundled_index.json exists
+			packageBundledIndexPath := packageDir.Parent().Join("package_index_bundled.json")
+			if packageBundledIndexPath.Exist() {
+				// particular case: ARCHITECTURE/boards.txt with package_bundled_index.json
+
+				// this is an unversioned Platform with a package_index_bundled.json that
+				// gives information about the version and tools needed
+
+				// Parse the bundled index and merge to the general index
+				index, err := pm.LoadPackageIndexFromFile(packageBundledIndexPath)
+				if err != nil {
+					return fmt.Errorf("parsing IDE bundled index: %s", err)
+				}
+
+				// Now export the bundled index in a temporary core.Packages to retrieve the bundled package version
+				tmp := cores.NewPackages()
+				index.MergeIntoPackages(tmp)
+				if tmpPackage := tmp.GetOrCreatePackage(targetPackage.Name); tmpPackage == nil {
+					pm.Log.Warnf("Can't determine bundle platform version for %s", targetPackage.Name)
+				} else if tmpPlatform := tmpPackage.GetOrCreatePlatform(architecure); tmpPlatform == nil {
+					pm.Log.Warnf("Can't determine bundle platform version for %s:%s", targetPackage.Name, architecure)
+				} else if tmpPlatformRelease := tmpPlatform.GetLatestRelease(); tmpPlatformRelease == nil {
+					pm.Log.Warnf("Can't determine bundle platform version for %s:%s, no valid release found", targetPackage.Name, architecure)
+				} else {
+					version = tmpPlatformRelease.Version
+				}
+			}
+
 			platform := targetPackage.GetOrCreatePlatform(architecure)
 			release, err := platform.GetOrCreateRelease(version)
 			if err != nil {

arduino/cores/packagemanager/package_manager.go

@@ -198,14 +198,19 @@ func (pm *PackageManager) ResolveFQBN(fqbn *cores.FQBN) (
 
 // LoadPackageIndex loads a package index by looking up the local cached file from the specified URL
 func (pm *PackageManager) LoadPackageIndex(URL *url.URL) error {
-	indexPath := pm.IndexDir.Join(path.Base(URL.Path))
+	_, err := pm.LoadPackageIndexFromFile(pm.IndexDir.Join(path.Base(URL.Path)))
+	return err
+}
+
+// LoadPackageIndexFromFile load a package index from the specified file
+func (pm *PackageManager) LoadPackageIndexFromFile(indexPath *paths.Path) (*packageindex.Index, error) {
 	index, err := packageindex.LoadIndex(indexPath)
 	if err != nil {
-		return fmt.Errorf("loading json index file %s: %s", indexPath, err)
+		return nil, fmt.Errorf("loading json index file %s: %s", indexPath, err)
 	}
 
 	index.MergeIntoPackages(pm.packages)
-	return nil
+	return index, nil
 }
 
 // Package looks for the Package with the given name, returning a structure