How to make a gem work with newer version of dependencies?

Question

I am using resque gem and it requires sinatra (>= 0.9.2)

This installs Sinatra 1.0 gem which produces an error like loadError: cannot load such file -- rack/showexceptions

This is an issue fixed in Sinatra version 1.4.7, but I can't make resque to work with 1.4.7, even if version 1.4.7 is installed, bundle install still install version 1.0

Answer 1

Fork the project on GitHub. Replace the dependency version here. Run the test and if everything passes create a pull request.

s.add_dependency "sinatra", ">= 0.9.2"

# to this
s.add_dependency "sinatra", "~> 1.4"

Alternatively, you will have to your own gem and use it in your project. But that obviously has its disadvantages! That should be your last resort.