1 files changed, 10 insertions, 9 deletions
diff --git a/lib/rubygems/basic_specification.rb b/lib/rubygems/basic_specification.rb
index a09e8ed0e1..0ed7fc60bb 100644
--- a/lib/rubygems/basic_specification.rb
+++ b/lib/rubygems/basic_specification.rb
@@ -34,15 +34,6 @@ class Gem::BasicSpecification
     internal_init
   end
 
-  def self.default_specifications_dir
-    Gem.default_specifications_dir
-  end
-
-  class << self
-    extend Gem::Deprecate
-    rubygems_deprecate :default_specifications_dir, "Gem.default_specifications_dir"
-  end
-
   ##
   # The path to the gem.build_complete file within the extension install
   # directory.
@@ -199,6 +190,9 @@ class Gem::BasicSpecification
     File.expand_path(File.join(gems_dir, full_name, "data", name))
   end
 
+  extend Gem::Deprecate
+  rubygems_deprecate :datadir, :none, "4.1"
+
   ##
   # Full path of the target library file.
   # If the file is not in this gem, return nil.
@@ -256,6 +250,13 @@ class Gem::BasicSpecification
     raise NotImplementedError
   end
 
+  def installable_on_platform?(target_platform) # :nodoc:
+    return true if [Gem::Platform::RUBY, nil, target_platform].include?(platform)
+    return true if Gem::Platform.new(platform) === target_platform
+
+    false
+  end
+
   def raw_require_paths # :nodoc:
     raise NotImplementedError
   end