put virtualenv activation during build in comment. That means that for the moment the build machine must be provisionned beforehand, or ansible must be available globally
# See README.md for details.
define archive::tar_gz($source, $target, $path=$::path) {
exec {"${name} unpack":
command => "curl -s -S ${source} | tar -xzf - -C ${target} && touch ${name}",
creates => $name,
path => $path,
require => Package[curl],
}
}