GemBundler Bug Report

gembundler_bug_report

1. bundle gem json1 # create a gem
2. cd json1
3. modify json1.gemspec to this:
# -*- encoding: utf-8 -*-
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'json1/version'

Gem::Specification.new do |gem|
  gem.name          = "json1"
  gem.version       = Json1::VERSION
  gem.authors       = ["Bachue Zhou"]
  gem.email         = ["bachue.shu@gmail.com"]
  gem.description   = %q{description}
  gem.summary       = %q{summary}
  gem.homepage      = ""

  gem.files         = `git ls-files`.split($/)
  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
  gem.require_paths = ["lib"]
  gem.add_dependency 'json', '>= 1.7.3' # important
end
4. gem build json1.gemspec # build it, get json1-0.0.1.gem
5. cd .. 

6. bundle gem json2 # create another gem
7. cd json2
8. modify json2.gemspec to this:
# -*- encoding: utf-8 -*-
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'json2/version'

Gem::Specification.new do |gem|
  gem.name          = "json2"
  gem.version       = Json2::VERSION
  gem.authors       = ["Bachue Zhou"]
  gem.email         = ["bachue.shu@gmail.com"]
  gem.description   = %q{description}
  gem.summary       = %q{summary}
  gem.homepage      = ""

  gem.files         = `git ls-files`.split($/)
  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
  gem.require_paths = ["lib"]
  gem.add_dependency 'json', '<= 1.7.4' # important
end
9. gem build json2.gemspec # build it, get json2-0.0.1.gem
10. cd ..

11. mkdir test-project # create a project for test (not a rails project)
12. cd test-project
13. gem unpack ../json1/json1-0.0.1.gem
14. gem unpack ../json2/json2-0.0.1.gem # unpack these two gems to local
15. create a Gemfile, the content is:
source :rubygems

gem 'json1', '0.0.1', :path => 'json1-0.0.1/'
gem 'json2', '0.0.1', :path => 'json2-0.0.1/'

16. run "bundle install" # install gems from Gemfile
------------------
expected: 
Fetching gem metadata from http://rubygems.org/..
Installing json (1.7.4) with native extensions 
Using json1 (0.0.1) from source at json1-0.0.1/ 
Using json2 (0.0.1) from source at json2-0.0.1/ 
Using bundler (1.2.1) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
------------------
actual:
Fetching gem metadata from http://rubygems.org/..
Bundler could not find compatible versions for gem "json":
  In Gemfile:
    json2 (= 0.0.1) ruby depends on
      json (<= 1.7.4) ruby

    json1 (= 0.0.1) ruby depends on
      json (1.7.5)
------------------
# My explanation: 
# Here I wrote 2 gems:
# json1, which depends on json >= 1.7.3
# json2, which depends on json <= 1.7.4
# And I created a project, use these 2 gems
# When I run "bundle install", bundler should install json plugin, whose version is >= 1.7.3 and <= 1.7.4
# So I think bundler should install json 1.7.4, but actually it failed.
------------------
Bundler version 1.2.1
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.2]
gem version: 1.8.24
rvm 1.14.7 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
rubygems-bundler (1.1.0, 1.0.3)