Sourcing puppet modules from yaml

Puppetfile

require 'yaml' 

mypath = File.expand_path(File.dirname(__FILE__))

# Load configuration from config.yml
conf = YAML::load_file("#{mypath}/Puppetfile.yml")

forge_conf = conf.fetch('forge', nil)
if forge_conf.nil? 
    forge = ""
else
    forge, modules = forge_conf.first
    modules.each { |m|
        if m.is_a?(Hash)
            name, version = m.first
            if version == 'latest'
                mod name, :latest
            else
                mod name, version
            end
        else
            mod m
        end
    }
end

conf['git'].each { |org_uri, modules|
    modules.each { |m|
        if !(m.is_a?(Hash))
            m = { m => 'master' }
        end
        repo, ref = m.first
        name = repo.split('-', 2)[-1].gsub(/-/, '_')
        git = "#{org_uri}/#{repo}.git"
        mod name, :git => git,  :ref => ref
    }
}

Puppetfile.yml

forge:
  "https://forgeapi.puppetlabs.com":
    - bfraser/grafana
    - bmurt/puppet_agent:                       0.0.4
    - camptocamp/augeas: latest

git:
  "https://github.com":
    - jenkinsci/puppet-jenkins:                 v1.5.0
    - ripienaar/puppet-module-data:             0.0.4
    - rackerlabs/puppet-repose:                 1.6.0
  "git@github.example.com:ops":
    - puppet-profile_crm:                       0.1.12
    - puppet-profile_docker:                    0.3.1
    - puppet-profile_java_app_server:           0.1.1
    - puppet-profile_jenkins:                   1.4.0
    - puppet-repo:                              0.3.1
  "git@github.example.com:config-management-modules":
    - puppet-passwordsafe:                      0.3.5