[Installer] Load plugin files from path gems

3 files changed, 42 insertions, 1 deletions

diff --git a/lib/bundler/installer.rb b/lib/bundler/installer.rb
index efad66e202..813edbcda9 100644
--- a/lib/bundler/installer.rb
+++ b/lib/bundler/installer.rb
@@ -162,13 +162,23 @@ module Bundler
     # that said, it's a rare situation (other than rake), and parallel
     # installation is SO MUCH FASTER. so we let people opt in.
     def install(options)
-      Bundler.rubygems.load_plugins
+      load_plugins
       force = options["force"]
       jobs = 1
       jobs = [Bundler.settings[:jobs].to_i - 1, 1].max if can_install_in_parallel?
       install_in_parallel jobs, options[:standalone], force
     end
 
+    def load_plugins
+      Bundler.rubygems.load_plugins
+
+      requested_path_gems = @definition.requested_specs.select {|s| s.source.is_a?(Source::Path) }
+      path_plugin_files = requested_path_gems.map do |spec|
+        spec.matches_for_glob("rubygems_plugin#{Bundler.rubygems.suffix_pattern}")
+      end.flatten
+      Bundler.rubygems.load_plugin_files(path_plugin_files)
+    end
+
     def ensure_specs_are_compatible!
       system_ruby = Bundler::RubyVersion.system
       rubygems_version = Gem::Version.create(Gem::VERSION)
diff --git a/lib/bundler/rubygems_integration.rb b/lib/bundler/rubygems_integration.rb
index 8b7ed19465..7bd49a5cfb 100644
--- a/lib/bundler/rubygems_integration.rb
+++ b/lib/bundler/rubygems_integration.rb
@@ -158,6 +158,10 @@ module Bundler
       Gem.post_reset_hooks
     end
 
+    def suffix_pattern
+      Gem.suffix_pattern
+    end
+
     def gem_cache
       gem_path.map {|p| File.expand_path("cache", p) }
     end
@@ -212,6 +216,10 @@ module Bundler
       Gem.load_plugins if Gem.respond_to?(:load_plugins)
     end
 
+    def load_plugin_files(files)
+      Gem.load_plugin_files(files) if Gem.respond_to?(:load_plugin_files)
+    end
+
     def ui=(obj)
       Gem::DefaultUserInteraction.ui = obj
     end
diff --git a/spec/install/gemfile/path_spec.rb b/spec/install/gemfile/path_spec.rb
index 49dda37aee..e76d5c486e 100644
--- a/spec/install/gemfile/path_spec.rb
+++ b/spec/install/gemfile/path_spec.rb
@@ -590,5 +590,28 @@ RSpec.describe "bundle install with explicit source paths" do
         :requires => [lib_path("install_hooks.rb")]
       expect(out).to include("failed for foo-1.0")
     end
+
+    it "loads plugins from the path gem" do
+      foo_file = home("foo_plugin_loaded")
+      bar_file = home("bar_plugin_loaded")
+      expect(foo_file).not_to be_file
+      expect(bar_file).not_to be_file
+
+      build_lib "foo" do |s|
+        s.write("lib/rubygems_plugin.rb", "FileUtils.touch('#{foo_file}')")
+      end
+
+      build_git "bar" do |s|
+        s.write("lib/rubygems_plugin.rb", "FileUtils.touch('#{bar_file}')")
+      end
+
+      install_gemfile! <<-G
+        gem "foo", :path => "#{lib_path("foo-1.0")}"
+        gem "bar", :path => "#{lib_path("bar-1.0")}"
+      G
+
+      expect(foo_file).to be_file
+      expect(bar_file).to be_file
+    end
   end
 end