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Say I have a gem living happily at:
/MyPath/MyGem.gemAnd I want to use the local and unique gem rather than a gem version from Github, or wherever it fetches it from.
How do I specify I want to use gem "mygem" from /MyPath/MyGem.gem
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Use `gem install -v` You may already be familiar with gem install , but if you add the -v flag, you can specify the version of the gem to install. Using -v you can specify an exact version or use version comparators.
You can download gems from https://rubygems.org/gems/ or build you local gem via bundle and rack. eg: bundle gem yourGemName. rake install.
The Gemfile is wherever you want it to be - usually in the main directory of your project and the name of the file is Gemfile . It's convenient to have one because it allows you to use Bundler to manage which gems and which versions of each your project needs to run.
Try, in your Gemfile:
gem "mygem", :path => "/MyPath/MyGem.gem"
Note that it's probably best to use a relative link in there, like:
gem "mygem", :path => "vendor/MyPath/MyGem.gem"
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