put virtualenv activation during build in comment. That means that for the moment the build machine must be provisionned beforehand, or ansible must be available globally
### MANAGED BY PUPPET ###
<% @options.sort.map do |k,v| -%>
<% if v.is_a?(Hash) -%>
[<%= k %>]
<% v.sort.map do |ki, vi| -%>
<% if vi == true or v == '' -%>
<%= ki %>
<% elsif vi.is_a?(Array) -%>
<% vi.each do |vii| -%>
<%= ki %> = <%= vii %>
<% end -%>
<% elsif ![nil, '', :undef].include?(vi) -%>
<%= ki %> = <%= vi %>
<% end -%>
<% end -%>
<% end %>
<% end -%>