excerpt from graphite install manifest

# pip does not install carbon and graphite_web to the standard location,
# so 'pip freeze' does not list it and puppet attempts to install on each
# run. with this hack, the 'pip freeze' command lists them as expected
file { 
    "/usr/lib/python2.6/site-packages/carbon-${graphite_ver}-py2.6.egg-info":
      ensure  =>  directory,
      mode    =>  755,
      require => Package['carbon'],
      ;
    "/usr/lib/python2.6/site-packages/carbon-${graphite_ver}-py2.6.egg-info/PKG-INFO":
      content =>  template('graphite/PKG-INFO.carbon.erb'),
      require => [Package['carbon'],File["/usr/lib/python2.6/site-packages/carbon-${graphite_ver}-py2.6.egg-info"]]
      ;
    "/usr/lib/python2.6/site-packages/graphite_web-${graphite_ver}-py2.6.egg-info":
      ensure  =>  directory,
      mode    =>  755,
      require => Package['graphite-web'],
      ;
    "/usr/lib/python2.6/site-packages/graphite_web-${graphite_ver}-py2.6.egg-info/PKG-INFO":
      content =>  template('graphite/PKG-INFO.graphite_web.erb'),
      require => [Package['graphite-web'],File["/usr/lib/python2.6/site-packages/graphite_web-${graphite_ver}-py2.6.egg-info"]]
      ;
}

PKG-INFO.carbon.erb

Metadata-Version: 1.0
Name: carbon
Version: <%=graphite_ver%>
Summary: Backend data caching and persistence daemon for Graphite
Home-page: https://launchpad.net/graphite
Author: Chris Davis
Author-email: chrismd@gmail.com
License: Apache Software License 2.0
Description: UNKNOWN
Platform: UNKNOWN

PKG-INFO.graphite_web.erb

Metadata-Version: 1.0
Name: graphite-web
Version: <%=graphite_ver%>
Summary: Enterprise scalable realtime graphing
Home-page: https://launchpad.net/graphite
Author: Chris Davis
Author-email: chrismd@gmail.com
License: Apache Software License 2.0
Description: UNKNOWN
Platform: UNKNOWN