Affected Puppet, Ruby, OS and module versions/distributions

all !

How to reproduce (e.g Puppet code you use)

set (in hiera):

prosody::custom_options:
  http_interfaces:
    - "127.0.0.1"
    - "::1"

What are you seeing

renders to (in prosody.cfg):

http_interfaces = { "127.0.0.1"; "::1" }

What behaviour did you expect instead

it should render to:

http_interfaces = { "127.0.0.1", "::1" }

Any additional information you'd like to impart

prosody.cfg is a lua code file. Arrays should be separated with ',' .See https://www.lua.org/pil/11.1.html