bundler already does validations on $HOME

lib/bundler/compact_index_client/updater.rb

@@ -29,8 +29,6 @@ def update(local_path, remote_path, retrying = nil)
         headers = {}
 
         Bundler::SharedHelpers.filesystem_access(Dir.tmpdir, :write) do
-          validate_permissions_on_home
-
           Dir.mktmpdir("bundler-compact-index-") do |local_temp_dir|
             local_temp_path = Pathname.new(local_temp_dir).join(local_path.basename)
 
@@ -106,16 +104,6 @@ def checksum_for_file(path)
           Digest::MD5.hexdigest(IO.read(path))
         end
       end
-
-    private
-
-      def validate_permissions_on_home
-        return if File.stat(ENV["HOME"]).writable?
-        raise Bundler::PermissionError,
-          "Bundler does not have write access to $HOME. Bundler must " \
-          "have write access to $HOME to function properly. " \
-          "$HOME is currently #{ENV["HOME"]}"
-      end
     end
   end
 end

spec/bundler/compact_index_client/updater_spec.rb

@@ -42,21 +42,4 @@
       end.to raise_error(Bundler::PermissionError)
     end
   end
-
-  context "when bundler doesn't have permissions on $HOME" do
-    let(:response) { double(:response, :body => "") }
-    let(:local_path) { Pathname("/tmp/localpath") }
-    let(:remote_path) { double(:remote_path) }
-    let(:home_file_stat) { File::Stat.new("/") }
-
-    it "Bundler::PermissionError is raised" do
-      allow(Dir).to receive(:tmpdir) { "/tmp" }
-      allow(File).to receive(:stat).with(anything) { home_file_stat }
-      allow(home_file_stat).to receive(:writable?) { false }
-
-      expect do
-        updater.update(local_path, remote_path)
-      end.to raise_error(Bundler::PermissionError)
-    end
-  end
 end