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-rwxr-xr-xtool/rbinstall.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index 322608d330..927b2743d0 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -688,7 +688,9 @@ install?(:ext, :comm, :gem) do
$:.unshift(File.join(srcdir, "lib"))
require("rubygems.rb")
gem_dir = Gem.default_dir
- directories = Gem.ensure_gem_subdirectories(gem_dir)
+ # Gem.ensure_gem_subdirectories makes subdirectories group-writable.
+ directories = Gem::REPOSITORY_SUBDIRECTORIES
+ makedirs([gem_dir, *directories.map {|name| File.join(gem_dir, name)}])
prepare "default gems", gem_dir, directories
spec_dir = File.join(gem_dir, directories.grep(/^spec/)[0])