test.pp

$debDir = "/some/path"

define localPackage ($packageName = $title) {
    package {$packageName :
        ensure   => installed,
        provider => dpkg,
        source   => "${debDir}/${packageName}.deb"
    }
}

$locals = ['doxygen_1.8.4-1_i386', 'webmin_1.620_all', … ]
localPackage { $locals : }