How to find all gems that depend on lead time from a specific gem

Question

How to find all gems that are dependent on lead time from a particular gem.

eg How do I find all gems which are dependent on mongoid gem version 2.3.4 

Answer 1

You use the -R switch (upper case) with gem dependency :

 gem dependency mongoid -v '2.3.4' -R 

outputs:

 Gem mongoid-2.3.4 activemodel (~> 3.1) bson_ext (~> 1.3, development) mocha (~> 0.9.12, development) mongo (~> 1.3) rdoc (~> 3.5.0, development) rspec (~> 2.6, development) tzinfo (~> 0.3.22) watchr (~> 0.6, development) 

Answer 2

 gem dependency mongoid -v 2.3.4 

The documentation is here http://docs.rubygems.org/read/chapter/10#page78