How to solve Some gems seem to be missing from your vendor/cache directory. Could not find "whatever" in any of the sources?

Question

This is driving me crazy. I added a gem (hirb) to the Gemfile and now I can't deploy.

Yes, I used bundle install --path vendor/cache

Yes I used bundle package

Yes I committed Gemfile and Gemfile.lock

I deleted the vendor/cache folder in the production machine so it would generate it again instead of updating it. Was this wrong?

Whenever I run cap:deploy I get the following...

executing "cd /var/www/releases/20120606002321 && bundle install --gemfile /var/www/releases/20120606002321/Gemfile --path /var/www/shared/bundle --deployment --quiet --without development test"
    servers: ["11.111.11.11"]
    [11.111.11.11] executing command
    [11.111.11.11] env PATH=/var/lib/gems/1.9.1/bin:$PATH sh -c 'cd /var/www/releases/20120606002321 && bundle install --gemfile /var/www/releases/20120606002321/Gemfile --path /var/www/shared/bundle --deployment --quiet --without development test'
 ** [out :: 11.111.11.11] Some gems seem to be missing from your vendor/cache directory.
 ** [out :: 11.111.11.11] Could not find multi_json-1.3.6 in any of the sources
    command finished in 48571ms
*** [deploy:update_code] rolling back
  * executing "rm -rf /var/www/releases/20120606002321; true"
    servers: ["11.111.11.11"]
    [11.111.11.11] executing command
    [11.111.11.11] env PATH=/var/lib/gems/1.9.1/bin:$PATH sh -c 'rm -rf /var/www/releases/20120606002321; true'
    command finished in 6417ms
failed: "env PATH=/var/lib/gems/1.9.1/bin:$PATH sh -c 'cd /var/www/releases/20120606002321 && bundle install --gemfile /var/www/releases/20120606002321/Gemfile --path /var/www/shared/bundle --deployment --quiet --without development test'" on 11.111.11.11

Answer 1

You might want to try removing the --deployment flag. That seems to allow Bundler to install from both the vendor/cache source and Rubygems.

Capfile:

set :bundle_flags, "--quiet --no-cache"

A related bug: https://github.com/bundler/bundler/issues/1454

Answer 2

Try,

bundle install --no-deployment

This removes the --deployment "bundle freeze" that prevents updates you're attempting. You can verify a freeze is imposed by looking for BUNDLE_FROZEN in .bundle/config