count default gems as installed

fixes #2780

1 files changed, 3 insertions, 5 deletions

diff --git a/lib/bundler/source/rubygems.rb b/lib/bundler/source/rubygems.rb
index 28f6b47c2f..910e1ddc8a 100644
--- a/lib/bundler/source/rubygems.rb
+++ b/lib/bundler/source/rubygems.rb
@@ -252,11 +252,9 @@ module Bundler
       end
 
       def gem_dir_exists?(spec)
-        if spec.name == "bundler"
-          true
-        else
-          File.directory?(spec.full_gem_path)
-        end
+        return true if spec.name == "bundler"
+        return true if spec.loaded_from.include?("specifications/default/")
+        File.directory?(spec.full_gem_path)
       end
     end