Is there a better way to do this?

gistfile1.txt

    $attrs_first = {
        command => "/foo",
    }

    if $condition {
        $more_attrs = {require => Class['bar']}
        $attrs = merge($attrs_first, $more_attrs)
    } else {
        $attrs = $attrs_first
    }

    $resource = { "something" => $attrs }

    create_resources(exec, $resource)

compare to ruby:

{ command: '/foo'}.tap{|f| f.merge!(require: "class['bar']") if condition }