In 2009, I think, I read news that Brazil was to buy a nuclear sub. From France.
The French have 6 Rubis, but plan to decommision them in favour of their new nuclear submarine class, the Barracuda, which should enter service by 2017.
I imagine the French are eager to sell their boats to Canada, too.
And that is better than if they sell them to Egypt, Libya or Saudi Arabia to buy these regime's sympathies.