Check for gems missing in sources before pulling the gem source

[KieranP]

Don't fetch source index unless needed. The index takes far longer than pulling the gems from system gems.

Scenario:

== Rubygems ==
% gem list
Custom gem (0.1.0)

== Gemfile ==
source :gemcutter
gem "custom_gem"

Expected:

Installing Custom gem from system gems

Actual:

Fetching source index from http://gemcutter.org
Installing Custom gem from system gems

Incase newer gems are available in the source, but not system gems, have a --force option

Or inverse, add option not to pull source index unless needed, i.e. --skip-sources

[indirect]

The option to not pull the source index unless needed already exists. You activate it with bundle lock. As long as your bundle is locked, and the gems in the lockfile are available locally, bundle install will not fetch the source index.

[KieranP]

Ah, I see. Thanks.