Support for Yarn workspaces? about ember-cli-rails HOT 1 OPEN

diff --git a/lib/ember_cli/path_set.rb b/lib/ember_cli/path_set.rb
index 9a30e2c..c246a51 100644
--- a/lib/ember_cli/path_set.rb
+++ b/lib/ember_cli/path_set.rb
@@ -1,3 +1,4 @@
+require "json"
 require "ember_cli/helpers"
 
 module EmberCli
@@ -41,7 +42,7 @@ module EmberCli
 
     def ember
       @ember ||= begin
-        root.join("node_modules", "ember-cli", "bin", "ember").tap do |path|
+        ember_path.tap do |path|
           unless path.executable?
             fail DependencyError.new <<-MSG.strip_heredoc
               No `ember-cli` executable found for `#{app_name}`.
@@ -148,6 +149,31 @@ module EmberCli
       app_options[:yarn] || app_options[:yarn_path]
     end
 
+    def workspace?
+      manifest_path = rails_root.join("package.json")
+      return false unless File.file?(manifest_path)
+
+      workspaces = JSON.parse(File.read(manifest_path)).fetch("workspaces", [])
+
+      workspaces.any? { |workspace| File.fnmatch(workspace, relative_path) }
+    end
+
+    def relative_path
+      @relative_path ||= begin
+        path = app_options.fetch(:path) { default_root }
+        pathname = Pathname.new(path)
+        pathname.relative_path_from(rails_root)
+      end
+    end
+
+    def ember_path
+      if workspace?
+        root.join("node_modules", ".bin", "ember")
+      else
+        root.join("node_modules", "ember-cli", "bin", "ember")
+      end
+    end
+
     def app_name
       app.name
     end