* lib/rubygems: Update to RubyGems master 2abce58. Changes:

  Fixed documentation generation when sdoc and json are installed as
  gems.

  Added some missing documentation.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43317 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

7 files changed, 42 insertions, 13 deletions

diff --git a/lib/rubygems/ext/cmake_builder.rb b/lib/rubygems/ext/cmake_builder.rb
index d6d106f4ae..17bd6c296e 100644
--- a/lib/rubygems/ext/cmake_builder.rb
+++ b/lib/rubygems/ext/cmake_builder.rb
@@ -1,3 +1,5 @@
+require 'rubygems/command'
+
 class Gem::Ext::CmakeBuilder < Gem::Ext::Builder
   def self.build(extension, directory, dest_path, results)
     unless File.exist?('Makefile') then
diff --git a/lib/rubygems/ext/configure_builder.rb b/lib/rubygems/ext/configure_builder.rb
index ef8b29e427..2a542e6bd0 100644
--- a/lib/rubygems/ext/configure_builder.rb
+++ b/lib/rubygems/ext/configure_builder.rb
@@ -4,8 +4,6 @@
 # See LICENSE.txt for permissions.
 #++
 
-require 'rubygems/ext/builder'
-
 class Gem::Ext::ConfigureBuilder < Gem::Ext::Builder
 
   def self.build(extension, directory, dest_path, results, args=[])
diff --git a/lib/rubygems/ext/ext_conf_builder.rb b/lib/rubygems/ext/ext_conf_builder.rb
index 5112eb8e2f..9a656a30a3 100644
--- a/lib/rubygems/ext/ext_conf_builder.rb
+++ b/lib/rubygems/ext/ext_conf_builder.rb
@@ -4,8 +4,6 @@
 # See LICENSE.txt for permissions.
 #++
 
-require 'rubygems/ext/builder'
-require 'rubygems/command'
 require 'fileutils'
 require 'tempfile'
 
diff --git a/lib/rubygems/ext/rake_builder.rb b/lib/rubygems/ext/rake_builder.rb
index 2ac6edd5c8..984c54bc1b 100644
--- a/lib/rubygems/ext/rake_builder.rb
+++ b/lib/rubygems/ext/rake_builder.rb
@@ -4,9 +4,6 @@
 # See LICENSE.txt for permissions.
 #++
 
-require 'rubygems/ext/builder'
-require 'rubygems/command'
-
 class Gem::Ext::RakeBuilder < Gem::Ext::Builder
 
   def self.build(extension, directory, dest_path, results, args=[])
diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
index 5b12f418f0..2e7ccc731e 100644
--- a/lib/rubygems/installer.rb
+++ b/lib/rubygems/installer.rb
@@ -4,6 +4,7 @@
 # See LICENSE.txt for permissions.
 #++
 
+require 'rubygems/command'
 require 'rubygems/exceptions'
 require 'rubygems/package'
 require 'rubygems/ext'
diff --git a/lib/rubygems/request_set.rb b/lib/rubygems/request_set.rb
index bce6308d6d..3ff3e83ca6 100644
--- a/lib/rubygems/request_set.rb
+++ b/lib/rubygems/request_set.rb
@@ -5,6 +5,19 @@ require 'rubygems/dependency_list'
 require 'rubygems/installer'
 require 'tsort'
 
+##
+# A RequestSet groups a request to activate a set of dependencies.
+#
+#   nokogiri = Gem::Dependency.new 'nokogiri', '~> 1.6'
+#   pg = Gem::Dependency.new 'pg', '~> 0.14'
+#
+#   set = Gem::RequestSet.new nokogiri, pg
+#
+#   requests = set.resolve
+#
+#   p requests.map { |r| r.full_name }
+#   #=> ["nokogiri-1.6.0", "mini_portile-0.5.1", "pg-0.17.0"]
+
 class Gem::RequestSet
 
   include TSort
@@ -23,6 +36,15 @@ class Gem::RequestSet
 
   attr_accessor :soft_missing
 
+  ##
+  # Creates a RequestSet for a list of Gem::Dependency objects, +deps+.  You
+  # can then #resolve and #install the resolved list of dependencies.
+  #
+  #   nokogiri = Gem::Dependency.new 'nokogiri', '~> 1.6'
+  #   pg = Gem::Dependency.new 'pg', '~> 0.14'
+  #
+  #   set = Gem::RequestSet.new nokogiri, pg
+
   def initialize *deps
     @dependencies = deps
 
diff --git a/lib/rubygems/specification.rb b/lib/rubygems/specification.rb
index 0bbef639ec..f63f6282d3 100644
--- a/lib/rubygems/specification.rb
+++ b/lib/rubygems/specification.rb
@@ -1390,16 +1390,27 @@ class Gem::Specification < Gem::BasicSpecification
 
   def build_extensions # :nodoc:
     return if default_gem?
+    return if extensions.empty?
     return if File.exist? gem_build_complete_path
     return if !File.writable?(base_dir) &&
               !File.exist?(File.join(base_dir, 'extensions'))
 
-    gem_original_require 'rubygems/ext'
-    gem_original_require 'rubygems/user_interaction'
-
-    Gem::DefaultUserInteraction.use_ui Gem::SilentUI.new do
-      builder = Gem::Ext::Builder.new self
-      builder.build_extensions
+    begin
+      # We need to require things in $LOAD_PATH without looking for the
+      # extension we are about to build.
+      unresolved_deps = Gem::Specification.unresolved_deps.dup
+      Gem::Specification.unresolved_deps.clear
+
+      require 'rubygems/config_file'
+      require 'rubygems/ext'
+      require 'rubygems/user_interaction'
+
+      Gem::DefaultUserInteraction.use_ui Gem::SilentUI.new do
+        builder = Gem::Ext::Builder.new self
+        builder.build_extensions
+      end
+    ensure
+      Gem::Specification.unresolved_deps.replace unresolved_deps
     end
   end