The filesystem might not be writable during runtime when deployed.

2 files changed, 20 insertions, 1 deletions

diff --git a/lib/bundler.rb b/lib/bundler.rb
index 396c3cdb4c..da9b2361a9 100644
--- a/lib/bundler.rb
+++ b/lib/bundler.rb
@@ -189,7 +189,7 @@ module Bundler
       path = path.parent until path.exist?
       sudo_present = !`which sudo 2>#{NULL}`.empty?
 
-      !File.writable?(path) && sudo_present
+      !settings.path && !File.writable?(path) && sudo_present
     end
 
     def mkdir_p(path)
diff --git a/spec/runtime/setup_spec.rb b/spec/runtime/setup_spec.rb
index 271a75f5cd..88729dca3e 100644
--- a/spec/runtime/setup_spec.rb
+++ b/spec/runtime/setup_spec.rb
@@ -241,6 +241,25 @@ describe "Bundler.setup" do
       FileUtils.rm_rf vendored_gems('cache')
       should_be_installed "rack 1.0.0"
     end
+
+    it "does not randomly change the path when specifying --path and the bundle directory becomes read only" do
+      begin
+        bundle "install vendor"
+
+        Dir["**/*"].each do |f|
+          File.directory?(f) ?
+            File.chmod(0555, f) :
+            File.chmod(0444, f)
+        end
+        should_be_installed "rack 1.0.0"
+      ensure
+        Dir["**/*"].each do |f|
+          File.directory?(f) ?
+            File.chmod(0755, f) :
+            File.chmod(0644, f)
+        end
+      end
+    end
   end
 
   describe "when excluding groups" do