Puppet users - Jun 2007 - How to handle package conflicts between classes ..

what is the best way to handle package conflicts between classes?

for example, below, i have the following two classes defined and both 
include a "package { "perl-LDAP" }", so when used separately
they work
as expected but when i need to assign both classes to a node i get a 
conflict.

error: "Duplicate definition: Package[perl-LDAP] is already defined"

thanks for any help

Ben

===============================================
    class cups-server {
     
      package { [ cups, "cups-lpd", hpijs, foomatic, ghostscript,
    "perl-LDAP" ]:
                  ensure  => installed
              }
    # ---- from disabled repos (custom-testing-puppet, dag-puppet),
    waiting for ability to pass args to package handler.
    #  package  { [ pdftk ]:
    #             ensure  => installed,
    #             args      => "--enablerepo=dag-puppet"
    #         }
             
      service { cups:
                  ensure  => running,
                  enable  => true
              }
             
      rfile   { "/etc/cups/cupsd.conf":
                  type    => "cups-server",
                  group   => lp,
                  mode    => 640,
                  notify  => Service["cups"];

                "/usr/share/cups/model":
                  type    => "cups-server",
                  notify  => Service["cups"];
                 
                "/usr/lib/cups/backend":
                  type    => "cups-server",
                  mode    => 755,
                  notify  => Service["cups"];
              }
             
      file    { "/opt/cups.tmp":
                  ensure  => directory;
               
                # ---- disable the SNMP backend 
                "/usr/lib/cups/backend/snmp":
                  mode    => 000
              }         
    }


    class ldap-server {
      package { [ "xorg-x11-deprecated-libs",
                  "java-1.5.0-sun",
                  "fedora-ds",
                  "fonts-xorg-base",
                  "perl-LDAP",
                  "openldap-clients",
                  "perl-MIME-Lite",
                  "perl-IO-Socket-SSL"
                ]:
                  ensure  => installed,
                  require => [ Mkyumrepo["fedora-ds"],
    Mkyumrepo["custom"], Mkyumrepo["base"] ]
              }

      mkyumrepo { "fedora-ds":
                    descr     => "Fedora Directory Server repo",
                    repopath  =>
    "/$operatingsystem/fedora-ds/\$releasever/\$basearch/",
                    gpgcheck  => 0,
                    enabled   => 1
                }
     
      append_if_no_such_line
                { "sysctl-keepalive":
                    file  => "/etc/sysctl.conf",
                    line  => "net.ipv4.tcp_keepalive_time = 300";
                  "sysctl-port-range":
                    file  => "/etc/sysctl.conf",
                    line  => "net.ipv4.ip_local_port_range = 1024
65000";
                  "sysctl-file-max":
                    file  => "/etc/sysctl.conf",
                    line  => "fs.file-max = 130000";
                }

      rfile
                { "/etc/rc.d/init.d/FedoraDirectoryServer":
                    type    => "ldap-server",
                    mode    => 750;
                    
                  "/etc/rc.d/init.d/fedora-ds-admin":
                    type    => "ldap-server",
                    mode    => 750;
                    
                  "/etc/security/limits.conf":
                    type    => "ldap-server"                
                }
                
      service   { "FedoraDirectoryServer":
                    enable  => true,
                    require =>
    Rfile["/etc/rc.d/init.d/FedoraDirectoryServer"];
                  "fedora-ds-admin":
                    enable  => true,
                    require =>
Rfile["/etc/rc.d/init.d/fedora-ds-admin"];
                }

      file      {"/opt/ldap-server/fedora-ds/install.inf":
                    ensure  => file,
                    content =>
    template("ldap-server/opt/ldap-server/fedora-ds/install.inf.erb"),
                    mode    => 640
                }
                            
      exec      { "setup/setup -s -f
    /opt/ldap-server/fedora-ds/install.inf":
                    cwd     => "/opt/fedora-ds/",
                    creates => "/opt/fedora-ds/slapd-ldap",
                    path    => [ "/usr/local/sbin",
"/usr/local/bin",
    "/sbin", "/bin", "/usr/sbin",
"/usr/bin" ],
                    require => [ Package["fedora-ds"] ]
                }
    }

    # works
    node ''example-cups'' { include cups-server }
    node ''example-ldap'' { include ldap-server }

    # doesn''t work
    node ''example-both'' {
        include cups-server
        include ldap-server
    }

Ben wrote:
> what is the best way to handle package conflicts between classes?
> 
> for example, below, i have the following two classes defined and both 
> include a "package { "perl-LDAP" }", so when used
separately they work
> as expected but when i need to assign both classes to a node i get a 
> conflict.
> 
> error: "Duplicate definition: Package[perl-LDAP] is already
defined"
> 
> thanks for any help
I''ve taken to simply refactoring the common code into a class of
it''s
own--in this I might call it "perl-ldap-support", and then include any
other related configuration (eg: a default configuration for the module).