# cat /tmp/test.pp 
ckm { "root": }
##

# cat type/ckm.rb 
module Puppet
    newtype(:ckm) do
        @doc = "Manages entries in /etc/ckm.conf"

        ensurable

        newparam(:name) do
            desc "the main key in ckm.conf"

            isnamevar
        end

        newproperty(:target) do
            desc "ckm.conf"

            defaultto { if @resource.class.defaultprovider.ancestors.include?(Puppet::Provider::ParsedFile)
                    @resource.class.defaultprovider.default_target
                else
                    nil
                end
            }
        end
    end
end

##

# cat provider/ckm/parsed.rb 
require 'puppet/provider/parsedfile'

ckm = "/tmp/ckm.conf"

Puppet::Type.type(:ckm).provide(:parsed,
    :parent => Puppet::Provider::ParsedFile,
    :default_target => ckm,
    :filetype => :flat
) do
    desc "Parse and generate ckm.conf."

    confine :exists => ckm

    text_line :comment, :match => /^#/
    text_line :blank, :match => /^\s*$/

    record_line :parsed, :fields => %w{name}
end

##

# puppet -v /tmp/test.pp  --trace
info: Loading fact apache_version
info: Loading fact netmask
info: Loading fact location
info: Loading fact hardware_platform
info: Loading fact servertype
info: Loading fact topdomain
info: Loading fact domain
info: Stored catalog for puppetmaster in 0.08 seconds
err: Could not create root: Could not find a default provider for ckm
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/providers.rb:39:in `defaultprovider'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/providers.rb:182:in `default'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/attributes.rb:635:in `setdefaults'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/attributes.rb:120:in `eachattr'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/attributes.rb:115:in `each'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/attributes.rb:115:in `eachattr'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/attributes.rb:625:in `setdefaults'
/usr/lib/ruby/site_ruby/1.8/puppet/type.rb:247:in `initialize'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/instances.rb:151:in `new'
/usr/lib/ruby/site_ruby/1.8/puppet/metatype/instances.rb:151:in `create'
/usr/lib/ruby/site_ruby/1.8/puppet/transportable.rb:87:in `to_type'
/usr/lib/ruby/site_ruby/1.8/puppet/node/catalog.rb:488:in `send'
/usr/lib/ruby/site_ruby/1.8/puppet/node/catalog.rb:488:in `to_catalog'
/usr/lib/ruby/site_ruby/1.8/puppet/node/catalog.rb:476:in `each'
/usr/lib/ruby/site_ruby/1.8/puppet/node/catalog.rb:476:in `to_catalog'
/usr/lib/ruby/site_ruby/1.8/puppet/node/catalog.rb:402:in `to_ral'
/usr/bin/puppet:212
Could not find a default provider for ckm