Bundler 1.3 --binstubs vs. Rails 4

README.md

On a clean Rails 4 install with Bundler 1.3.0, using --binstubs causes competition between Rails and Bundler for the contents of bin/rails (and bin/rake).

Just running bundle will rewrite the Rails version of bin/rails to a version that doesn't work.

The fix is to use the new bundle binstubs <gemname> command.

(see rails/rails#8974)

shell

$ cat Gemfile
source 'https://rubygems.org'
ruby "2.0.0"

gem 'rails',     github: 'rails/rails'

$ bundle install --path zz --binstubs
Fetching git://github.com/rails/rails.git
...
[snip]
...

$ cat .bundle/config
---
BUNDLE_PATH: zz
BUNDLE_BIN: bin
BUNDLE_DISABLE_SHARED_GEMS: '1'

$ bundler -v
-bash: bundler: command not found

$ bundle -v
Bundler version 1.3.0

$ cat bin/rails
#!/usr/bin/env ruby
APP_PATH = File.expand_path('../../config/application',  __FILE__)
require_relative '../config/boot'
require 'rails/commands'

$ bundle
Using rake (10.0.3) 
...
[snip]
...
Your bundle is complete! It was installed into ./zz

$ cat bin/rails
#!/usr/bin/env ruby
#
# This file was generated by Bundler.
#
# The application 'rails' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'pathname'
ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
  Pathname.new(__FILE__).realpath)

require 'rubygems'
require 'bundler/setup'

load Gem.bin_path('railties', 'rails')

$ bin/rake rails:update:bin
       exist  bin
   identical  bin/bundle
    conflict  bin/rails
Overwrite /Volumes/modev/bundler-rails/bin/rails? (enter "h" for help) [Ynaqdh] n
       skip  bin/rails
    conflict  bin/rake
Overwrite /Volumes/modev/bundler-rails/bin/rake? (enter "h" for help) [Ynaqdh] n
        skip  bin/rake

$ bin/rails s
Usage:
  rails new APP_PATH [options]
  ...

#### FIX ####

$ rm -rf .bundle/
$ rm -rf zz
$ rm -rf bin
$ bundle install --path zz
Fetching gem metadata from https://rubygems.org/.........
...
[snip]
...

$ ls bin
ls: bin: No such file or directory

$ bundle exec rake rails:update:bin
      create  bin
      create  bin/bundle
      create  bin/rails
      create  bin/rake

$ bin/rails s
=> Booting WEBrick
...
[snip]
...

$ bundle binstubs rdoc

$ ls bin
bundle  rails	rake	rdoc	ri

$ bin/rdoc
Parsing sources...
^C3% [115/3555]  ...04/actionpack/lib/action_controller/metal/instrumentation.rb
Interrupted
$ bundle
Using rake (10.0.3) 
...
[snip]
...

$ bin/rails s
=> Booting WEBrick
...

Alternatively:

bundle install --path .bundle --binstubs .bundle/bin
export PATH="bin:.bundle/bin:$PATH"

(I'm not sure how I feel about the $PATH modifications, though.)

@wuputah, I do the same thing and put the binstubs under .bundle/bin. I don't modify the path though, too risky.