RubyGems 1.5 requires 1.8.7 or newer

Rakefile

@@ -29,7 +29,7 @@ hoe = Hoe.spec 'rubygems-update' do
   self.readme_file    = 'README.rdoc'
 
   spec_extras[:required_rubygems_version] = Gem::Requirement.default
-  spec_extras[:required_ruby_version]     = Gem::Requirement.new '> 1.8.3'
+  spec_extras[:required_ruby_version]     = Gem::Requirement.new '>= 1.8.7'
   spec_extras[:executables]               = ['update_rubygems']
 
   clean_globs.push('**/debug.log',

bin/gem

@@ -9,7 +9,7 @@ require 'rubygems'
 require 'rubygems/gem_runner'
 require 'rubygems/exceptions'
 
-required_version = Gem::Requirement.new ">= 1.8.6"
+required_version = Gem::Requirement.new ">= 1.8.7"
 
 unless required_version.satisfied_by? Gem.ruby_version then
   abort "Expected Ruby Version #{required_version}, is #{Gem.ruby_version}"

lib/rubygems/commands/setup_command.rb

@@ -27,13 +27,7 @@ def initialize
     end
 
     add_option '--[no-]vendor',
-               'Install into vendorlibdir not sitelibdir',
-               '(Requires Ruby 1.8.7)' do |vendor, options|
-      if vendor and Gem.ruby_version < Gem::Version.new('1.8.7') then
-        raise OptionParser::InvalidOption,
-              "requires ruby 1.8.7+ (you have #{Gem.ruby_version})"
-      end
-
+               'Install into vendorlibdir not sitelibdir' do |vendor, options|
       options[:site_or_vendor] = vendor ? :vendorlibdir : :sitelibdir
     end
 
@@ -55,7 +49,7 @@ def initialize
   end
 
   def check_ruby_version
-    required_version = Gem::Requirement.new '>= 1.8.6'
+    required_version = Gem::Requirement.new '>= 1.8.7'
 
     unless required_version.satisfied_by? Gem.ruby_version then
       alert_error "Expected Ruby version #{required_version}, is #{Gem.ruby_version}"

lib/rubygems/spec_fetcher.rb

@@ -173,7 +173,7 @@ def find_matching(*args)
   def suggest_gems_from_name gem_name
     gem_name        = gem_name.downcase
     max             = gem_name.size / 2
-    specs           = list.values.flatten(1) # flatten(1) is 1.8.7 and up
+    specs           = list.values.flatten 1
 
     matches = specs.map { |name, version, platform|
       next unless Gem::Platform.match platform