Support for the Ruby 2.4 series has ended. See here for reference.
![show/hide quicksearch [+]](../../images/find.png)
An InstalledSpecification represents a gem that is already installed locally.
This is a null install as this specification is already installed. options are ignored.
 
               # File rubygems/resolver/installed_specification.rb, line 18
def install options = {}
  yield nil
end
             
            Returns true if this gem is installable for the current platform.
 
               # File rubygems/resolver/installed_specification.rb, line 25
def installable_platform?
  # BACKCOMPAT If the file is coming out of a specified file, then we
  # ignore the platform. This code can be removed in RG 3.0.
  return true if @source.kind_of? Gem::Source::SpecificFile
  super
end