install gem using puppet package

gistfile1.pp

  package {
    'jekyll':
      ensure => installed,
      provider => gem,
      require => [
        Anyenv::Env::Install["anyenv_deploy_rbenv_${ruby_version}"],
        Anyenv::Env::Default["anyenv_deploy_rbenv_default_${ruby_version}"],
      ];
    'rouge':
      ensure => installed,
      provider => gem,
      require => [
        Anyenv::Env::Install["anyenv_deploy_rbenv_${ruby_version}"],
        Anyenv::Env::Default["anyenv_deploy_rbenv_default_${ruby_version}"],
      ];
  }

gistfile2.pp

  exec {
    'gem install jekyll':
      command => 'gem install jekyll',
      creates => '/home/deploy/.anyenv/envs/rbenv/shims/jekyll',
      user => 'deploy',
      provider => shell,
      environment => [
        "HOME=/home/deploy",
        "RBENV_ROOT=/home/deploy/.anyenv/envs/rbenv",
      ],
      path => [
        '/home/deploy/.anyenv/bin',
        '/home/deploy/.anyenv/envs/rbenv/bin',
        '/home/deploy/.anyenv/envs/rbenv/shims',
        '/usr/local/bin',
        '/usr/bin',
        '/bin',
      ],
      require => [
        Anyenv::Env::Install["anyenv_deploy_rbenv_${ruby_version}"],
        Anyenv::Env::Default["anyenv_deploy_rbenv_default_${ruby_version}"],
      ];
    'gem install rouge':
      command => 'gem install rouge',
      creates => '/home/deploy/.anyenv/envs/rbenv/shims/rouge',
      user => 'deploy',
      provider => shell,
      environment => [
        "HOME=/home/deploy",
        "RBENV_ROOT=/home/deploy/.anyenv/envs/rbenv",
      ],
      path => [
        '/home/deploy/.anyenv/bin',
        '/home/deploy/.anyenv/envs/rbenv/bin',
        '/home/deploy/.anyenv/envs/rbenv/shims',
        '/usr/local/bin',
        '/usr/bin',
        '/bin',
      ],
      require => [
        Anyenv::Env::Install["anyenv_deploy_rbenv_${ruby_version}"],
        Anyenv::Env::Default["anyenv_deploy_rbenv_default_${ruby_version}"],
      ];
  }

Try this, a bit more brief...

  Exec {
    user => 'deploy',
    provider => shell,
    environment => [
      "HOME=/home/deploy",
      "RBENV_ROOT=/home/deploy/.anyenv/envs/rbenv",
    ],
    path => [
      '/home/deploy/.anyenv/bin',
      '/home/deploy/.anyenv/envs/rbenv/bin',
      '/home/deploy/.anyenv/envs/rbenv/shims',
      '/usr/local/bin',
      '/usr/bin',
      '/bin',
    ],
    require => [
      Anyenv::Env::Install["anyenv_deploy_rbenv_${ruby_version}"],
      Anyenv::Env::Default["anyenv_deploy_rbenv_default_${ruby_version}"],
    ],
  }

  exec {
    'gem install jekyll':
      command => 'gem install jekyll',
      creates => '/home/deploy/.anyenv/envs/rbenv/shims/jekyll';
    'gem install rouge':
      command => 'gem install rouge',
      creates => '/home/deploy/.anyenv/envs/rbenv/shims/rouge';
  }