can't find gem specified in gemspec with a range

[stepheneb]

I have a gem, https://github.com/stepheneb/jnlp which specifies a range for nokogiri in the gemspec:

s.add_runtime_dependency('nokogiri', ">= 1.4.4", "<= 1.5")

Am using bundler v1.0.18:

$ bundle --version
Bundler version 1.0.18

When I run bundle install bundler reports it can't find the gem.

In JRuby 1.6.4:

$ bundle install
There was a LoadError while evaluating jnlp.gemspec:
Could not find RubyGem nokogiri (>= 1.4.4, <= 1.5)

In Ruby 1.9.2 p290

$ bundle install
There was a LoadError while evaluating jnlp.gemspec:
Could not find nokogiri (<= 1.5, >= 1.4.4) amongst [abstract-1.0.0, actionmailer-3.1.0 ...

If I install nokogiri manually then the bundle install command completes successfully.

[indirect]

It's working fine for me with both 1.0.18 and 1.1.pre.8.

$ gem uninstall nokogiri
INFO:  gem "nokogiri" is not installed

$ cat Gemfile
source :rubygems
gem "jnlp", "~> 0.7.3"

$ bundle install --path vendor/bundle
Fetching dependency information from the API at http://rubygems.org/.......
Installing nokogiri (1.5.0) with native extensions 
Installing jnlp (0.7.3) 
Using bundler (1.1.pre.8) 
Your bundle is complete! It was installed into ./vendor/bundle

$ rm -rf Gemfile.lock vendor/bundle/

$ bundle _1.0.18_ install --path vendor/bundle
Fetching source index for http://rubygems.org/
Installing nokogiri (1.5.0) with native extensions 
Installing jnlp (0.7.3) 
Using bundler (1.0.18) 
Your bundle is complete! It was installed into ./vendor/bundle

[indirect]

(Unrelated, but I strongly suggest that you change your dependency on nokogiri to "~> 1.4.4", which is the same as [">= 1.4.4", "<1.5.0"])