class Gem::MissingSpecVersionError

rescue from the superclass Gem::LoadError to catch all types of load errors.
not the requested version. Instead of rescuing from this class, make sure to
Raised when trying to activate a gem, and the gem exists on the system, but
#

def build_message 

def build_message
  names = specs.map(&:full_name)
  "Could not find '#{name}' (#{requirement}) - did find: [#{names.join ','}]\n"
end

def initialize name, requirement, specs 

def initialize name, requirement, specs
  super(name, requirement)
  @specs = specs
end