Auto merge of #4610 - b-ggs:binstub-standalone, r=RochesterinNYC

Add standalone flag to binstubs

Add `--standalone` flag to `binstubs`

Fix #4594

@RochesterinNYC @segiddins

3 files changed, 20 insertions, 0 deletions

diff --git a/lib/bundler/cli.rb b/lib/bundler/cli.rb
index f2af5d71f7..fe510d1734 100644
--- a/lib/bundler/cli.rb
+++ b/lib/bundler/cli.rb
@@ -229,6 +229,8 @@ module Bundler
       "Overwrite existing binstubs if they exist"
     method_option "path", :type => :string, :lazy_default => "bin", :banner =>
       "Binstub destination directory (default bin)"
+    method_option "standalone", :type => :array, :lazy_default => [], :banner =>
+      "Make binstubs that can work without the Bundler runtime"
     def binstubs(*gems)
       require "bundler/cli/binstubs"
       Binstubs.new(options, gems).run
diff --git a/lib/bundler/cli/binstubs.rb b/lib/bundler/cli/binstubs.rb
index 8452ca3bfe..e8982e90b4 100644
--- a/lib/bundler/cli/binstubs.rb
+++ b/lib/bundler/cli/binstubs.rb
@@ -29,6 +29,8 @@ module Bundler
 
         if spec.name == "bundler"
           Bundler.ui.warn "Sorry, Bundler can only be run via Rubygems."
+        elsif options[:standalone]
+          installer.generate_standalone_bundler_executable_stubs(spec)
         else
           installer.generate_bundler_executable_stubs(spec, :force => options[:force], :binstubs_cmd => true)
         end
diff --git a/spec/commands/binstubs_spec.rb b/spec/commands/binstubs_spec.rb
index ee319e016c..338f07100a 100644
--- a/spec/commands/binstubs_spec.rb
+++ b/spec/commands/binstubs_spec.rb
@@ -145,6 +145,22 @@ describe "bundle binstubs <gem>" do
     end
   end
 
+  context "after installing with --standalone" do
+    before do
+      install_gemfile <<-G
+        source "file://#{gem_repo1}"
+        gem "rack"
+      G
+      bundle "install --standalone"
+    end
+
+    it "includes the standalone path" do
+      bundle "binstubs rack --standalone"
+      standalone_line = File.read(bundled_app("bin/rackup")).each_line.find {|line| line.include? "$:.unshift" }.strip
+      expect(standalone_line).to eq "$:.unshift File.expand_path '../../bundle', __FILE__"
+    end
+  end
+
   context "when the bin already exists" do
     it "doesn't overwrite and warns" do
       FileUtils.mkdir_p(bundled_app("bin"))