Check if module doesn't exist and fail fast
# File lib/librarian/puppet/extension.rb, line 92 def dependencies_of(names) names = Array === names ? names.dup : names.to_a assert_strings!(names) deps = Set.new until names.empty? name = normalize_name(names.shift) next if deps.include?(name) deps << name raise(Error, "Unable to find module #{name}. Your Puppetfile may be out of sync with the lock, try running 'librarian-puppet install' first") if index[name].nil? names.concat index[name].dependencies.map(&:name) end deps.to_a end