install(dep_or_name, version = Gem::Requirement.default)
Instance Public methods
Installs the gem dep_or_name and all its dependencies.
Returns an Array of installed gem specifications.
If the :prerelease option is set and there is a prerelease for
dep_or_name the prerelease version will be installed.
Unless explicitly specified as a prerelease dependency, prerelease gems
that dep_or_name depend on will not be installed.
If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed separately.
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