``latest`` aliases for ``build.os`` and ``build.tools``
=======================================================

Ubuntu
------

.. runblock:: console

   $ lsb_release -a

Python
------

.. runblock:: console

   $ python --version

Ruby
----

.. runblock:: console

	 $ ruby --version

Golang
------

.. runblock:: console

	 $ go version

Node
----

.. runblock:: console

	 $ node --version

Cargo
-----

.. runblock:: console

	 $ cargo --version