Puppet

While encountering #5349 and trying to find a workaround for it, I came up with another weirdness of parametrized classes:

# cat foo.pp 
stage { "pre": before => Stage[main] }
class a {
  file{'/tmp/a': ensure => present }
}

class b inherits a {
  file{'/tmp/b': ensure => present, require => File['/tmp/a'] }
  include c
}

class c {
  file{'/tmp/c': ensure => present }
}

class {['b','a']: stage => pre }
# puppet foo.pp
Duplicate definition: Class[A] is already defined; cannot redefine at /root/foo.pp:15 on node foo

But the following works:

# cat foo.pp 
stage { "pre": before => Stage[main] }
class a {
  file{'/tmp/a': ensure => present }
}

class b inherits a {
  file{'/tmp/b': ensure => present, require => File['/tmp/a'] }
  include c
}

class c {
  file{'/tmp/c': ensure => present }
}

class {['a','b']: stage => pre }
# puppet foo.pp 
notice: Finished catalog run in 0.56 seconds

Imho both cases should work.