class sysconfig::packages {
$spel_pkgs = [
'python-dev',
'python-setuptools',
'libpq-dev',
'libjpeg8-dev',
'libxslt-dev',
'libxml2',
'mercurial'
]
package { $spel_pkgs: ensure => "installed" }
#upgrade setuptools
exec { '/usr/bin/easy_install --upgrade setuptools': require => Package[$spel_pkgs]}
}