"The gem ... has been deleted. It was installed at" Error. Bundle install doesn't install gems. How to re-install gems?

Question

I'm trying to build capybara-webkit on XP. I follow this instruction. I says:

8) Clone latest version of capybara-webkit from Github:

 $ git clone git://github.com/thoughtbot/capybara-webkit.git

9) Bundle/Install capybara-webkit version:

 $ cd ruby193\capybara-webkit
 $ bundle install

I did so at the first time. It installed some gems. Then I followed the instruction steps but couldn't build capybara-webkit. So to begin one more time, I deleted all the gems that were installed manually. Now I follow all the same steps but bundle install doesn't work any more. I says that all the gems are present:

C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems>cd capybara-webkit

C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems\capybara-webkit>bundle install
Resolving dependencies...
Using rake (0.9.2)
Using addressable (2.3.2)
Using bundler (1.3.5)
Using appraisal (0.4.0)
Using mime-types (1.22)
Using nokogiri (1.5.9)
Using rack (1.5.2)
Using rack-test (0.6.2)
Using xpath (2.0.0)
Using capybara (2.1.0)
Using json (1.8.0)
Using capybara-webkit (1.0.0) from source at .
Using ffi (1.2.0)
Using childprocess (0.3.6)
Using diff-lcs (1.1.2)
Using websocket (1.0.6)
Using libwebsocket (0.1.7.1)
Using subexec (0.0.4)
Using mini_magick (3.2.1)
Using multi_json (1.5.0)
Using rack-protection (1.3.2)
Using rspec-core (2.6.4)
Using rspec-expectations (2.6.0)
Using rspec-mocks (2.6.0)
Using rspec (2.6.0)
Using rubyzip (0.9.9)
Using selenium-webdriver (2.27.2)
Using tilt (1.3.3)
Using sinatra (1.3.5)
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.

But now I check these gems with bundle show but it says they all were deleted:

C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems\capybara-webkit>bundle show sinatra
The gem sinatra has been deleted. It was installed at:
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sinatra-1.3.5

C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems\capybara-webkit>bundle show selenium-webdriver
The gem selenium-webdriver has been deleted. It was installed at:
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.27.2

C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems\capybara-webkit>bundle show mini_magick
The gem mini_magick has been deleted. It was installed at:
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mini_magick-3.2.1

How it can be that bundle install says they are present but bundle show says they are deleted? So bundle install doesn't work any more. How may I again use bundle install to install these gems again?

Answer 1

This solved it for me: "gem install" and "bundle install" do not install gem dependencies after manual gem deletion. How to inform Rubygems that gems were deleted manually?

(Delete the .gemspec files for the gems you have removed).