Hi,

I am playing around with the Puppet 4 Type system and nested hashes.
Is it possible to use the Type system on a hash and check sub hashes as Struct?

# nested hashes
$hash = {
  ‘ben’ => {
    uid => 2204,
    home => ‘/home/ben’,
  },
  ‘jones’ => {
    uid => 2205,
    home => ‘home/jones’,
  }
}

# class definition
class users (
  Hash[String, Struct[{ uid => Integer, home => Pattern[/^\/.*/]}]] $hash,  
){
…
}

# class declaration
class { ‘users’:
  hash => $hash,
}

In this case I receive the following error:
Error: Expected parameter 'hash' of 'Class[Users]' to have type Hash[String, 
Struct[{'uid'=>Integer, 'home'=>Pattern[/^\/.*/]}]], got 
Struct[{'ben'=>Struct[{'uid'=>Integer, 'home'=>String}], 
'jones'=>Struct[{'uid'=>Integer, 'home'=>String}]}] at /root/hash.pp:16 on node 
puppetmaster.example.net

When using the Struct one needs to know the keys. But the keys may be any 
arbitrary value.

Within class users I could use the keys function and a define and check for the 
data types within the define.
But I thought that the mentioned approach is valid (at least I haven’t found a 
hint that my approach is not valid).

Any help/feedback appreciated,

best,
Martin

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