Some form of vagrant plugin to setup proxies

vagrant-plugin.rb

class Allan
  def initialize(app, env)
    @app = app
    @machine = env[:machine]
  end

  def call(env)
    @app.call env
    setup_debian_apt if @machine.box.name =~ /bento\/debian/
    setup_centos_yum if @machine.box.name =~ /centos\/7/
    setup_nix
  end

  def setup_nix
    return if @machine.communicate.test 'cat /etc/nix/nix.conf'
    @machine.ui.detail 'Setting up nix'
    @machine.communicate.tap do |comm|
      comm.sudo 'mkdir -p /nix /etc/nix && chown vagrant:vagrant /nix /etc/nix'
      comm.execute 'echo binary-caches = http://proxy.dev:8081/repository/nixos-cache/ > /etc/nix/nix.conf'
    end
  end

  def setup_debian_apt
    return if @machine.communicate.test 'grep proxy.dev /etc/apt/sources.list'
    @machine.ui.detail "Setting up Apt sources on #{@machine.box.name} based VM"
    @machine.communicate.tap do |comm|
      comm.sudo 'sed "s,httpredir.debian.org,proxy.dev:8081/repository," -i /etc/apt/sources.list'
      comm.sudo 'sed "s,security.debian.org,proxy.dev:8081/repository/debian-security," -i /etc/apt/sources.list'
    end
  end

  def setup_ubuntu_apt
    @machine.ui.detail "Setting up Apt sources on #{machine.box.name} based VM"
    @machine.communicate.tap do |comm|
      comm.sudo 'sed "s,us.archive.ubuntu.com,proxy.dev:8081/repository," -i /etc/apt/sources.list'
      comm.sudo 'sed "s,security.ubuntu.com/ubuntu,proxy.dev:8081/repository/ubuntu-security," -i /etc/apt/sources.list'
    end
  end

  def setup_centos_yum
    @machine.ui.detail "Setting up Yum sources on #{@machine.box.name} based VM"
    @machine.communicate.tap do |comm|
      comm.execute "awk '{ sub(/^mirrorlist/, \"#mirrorlist\") ; "\
                           "sub(/^#baseurl/, \"baseurl\") ; "\
                           "sub(/mirror.centos.org/, \"proxy.dev:8081/repository\"); "\
                           "print }'  /etc/yum.repos.d/CentOS-Base.repo > /tmp/CentOS-Base.repo"
      comm.sudo 'cp -fv /tmp/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo'
    end
  end
end

class Stuff < Vagrant.plugin('2')
  name 'allan'

  action_hook 'setup_repos', :machine_action_up do |hook|
    hook.append Allan
  end
end

Vagrant.configure '2' do |config|
  config.vm.network :forwarded_port, guest: 22, host: 2222, id: "ssh", disabled: true
  config.vm.synced_folder '.', '/vagrant', disabled: true
  config.ssh.insert_key = false
end