Merge pull request #4020 from rubygems/bring-back-support-for-path-in…

…-plugin

Bring back the possibility to install a plugin from path

(cherry picked from commit 62782d3)

bundler/lib/bundler/plugin/dsl.rb

@@ -10,7 +10,7 @@ class PluginGemfileError < PluginError; end
       # So that we don't have to override all there methods to dummy ones
       # explicitly.
       # They will be handled by method_missing
-      [:gemspec, :gem, :path, :install_if, :platforms, :env].each {|m| undef_method m }
+      [:gemspec, :gem, :install_if, :platforms, :env].each {|m| undef_method m }
 
       # This lists the plugins that was added automatically and not specified by
       # the user.

bundler/spec/plugins/install_spec.rb

@@ -208,6 +208,19 @@ def exec(command, args)
       plugin_should_be_installed("ga-plugin")
     end
 
+    it "accepts path sources" do
+      build_lib "ga-plugin" do |s|
+        s.write "plugins.rb"
+      end
+
+      install_gemfile <<-G
+        plugin 'ga-plugin', :path => "#{lib_path("ga-plugin-1.0")}"
+      G
+
+      expect(out).to include("Installed plugin ga-plugin")
+      plugin_should_be_installed("ga-plugin")
+    end
+
     context "in deployment mode" do
       it "installs plugins" do
         install_gemfile <<-G