How do I find gems that depend on a given gem?

Question

Is it possible to search for all gems that rely on a certain rubygem?

For example, I'd like to ask for all gems in gemcutter that rely on the test-unit gem.

Background: I'm looking to see how other gems handle the issue mentioned here.

Answer 1

I had the same problem, and found that some of the other suggestions for this question are now defunct. I came up with a 2-step solution that worked for me.

The following unix-y script will tell you all the gems your gems depend on:

gem list | egrep '^.*[ ]' -o | gem dependency

Then I just searched for the culprit in the output.

Answer 2

Use Google + Gemcutter.

Answer 3

Searching for gems with test-unit- brings up a few gems with test-unit- dependencies:

gem search test-unit-

Also, you can search your local gems dependencies with my gem grep plugin

gem grep -f dependencies test-unit

In a future release I plan to support searching remote gem dependencies ...