Is there a fix for the “Could not find *gem* in any of the sources” error that doesn't involve deleting Gemfile.lock?

Question

I am trying to get my development environment setup on a new computer.

git clone -o heroku git@heroku.com:theirapp.git
cd theirapp
bundle
Fetching gem metadata f         


        

Answer 1

An old version of bundler was giving me this same issue. After a bunch of puzzling, I realized that this was the issue.

Running gem install bundler fixed it completely.