# class Gem::MissingSpecVersionError

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

### Attributes

specs[R]

### Public Class Methods

new(name, requirement, specs) click to toggle source
Calls superclass method `Gem::MissingSpecError::new`

    # File lib/rubygems/errors.rb, line 58
    def initialize(name, requirement, specs)
      super(name, requirement)
      @specs = specs
    end

### Private Instance Methods

build_message() click to toggle source

    # File lib/rubygems/errors.rb, line 65
    def build_message
      if name == "bundler" && message = Gem::BundlerVersionFinder.missing_version_message
        return message
      end
      names = specs.map(&:full_name)
      "Could not find '#{name}' (#{requirement}) - did find: [#{names.join ','}]\n"
    end