[Source::Path] Don’t store cache paths in the lockfile

lib/bundler/source/path.rb

@@ -4,10 +4,12 @@ class Source
     class Path < Source
       autoload :Installer, "bundler/source/path/installer"
 
-      attr_reader :path, :options, :root_path
+      attr_reader :path, :options, :root_path, :original_path
       attr_writer :name
       attr_accessor :version
 
+      protected :original_path
+
       DEFAULT_GLOB = "{,*,*/*}.gemspec".freeze
 
       def initialize(options)
@@ -61,7 +63,7 @@ def hash
 
       def eql?(other)
         return unless other.class == self.class
-        expanded_path == expand(other.path) &&
+        expand(@original_path) == expand(other.original_path) &&
           version == other.version
       end
 
@@ -130,8 +132,8 @@ def expand(somepath)
       end
 
       def lockfile_path
-        return relative_path if path.absolute?
-        expand(path).relative_path_from(Bundler.root)
+        return relative_path(original_path) if original_path.absolute?
+        expand(original_path).relative_path_from(Bundler.root)
       end
 
       def app_cache_path(custom_path = nil)
@@ -186,7 +188,7 @@ def load_spec_files
         index
       end
 
-      def relative_path
+      def relative_path(path = self.path)
         if path.to_s.start_with?(root_path.to_s)
           return path.relative_path_from(root_path)
         end

spec/lock/lockfile_spec.rb

@@ -600,6 +600,36 @@
     G
   end
 
+  it "serializes pinned path sources to the lockfile even when packaging" do
+    build_lib "foo"
+
+    install_gemfile! <<-G
+      gem "foo", :path => "#{lib_path("foo-1.0")}"
+    G
+
+    bundle! "package --all"
+    bundle! "install --local"
+
+    lockfile_should_be <<-G
+      PATH
+        remote: #{lib_path("foo-1.0")}
+        specs:
+          foo (1.0)
+
+      GEM
+        specs:
+
+      PLATFORMS
+        #{generic_local_platform}
+
+      DEPENDENCIES
+        foo!
+
+      BUNDLED WITH
+         #{Bundler::VERSION}
+    G
+  end
+
   it "sorts serialized sources by type" do
     build_lib "foo"
     bar = build_git "bar"