Discussion: Storable instances for tuples

[Henning Thielemann]

On Fri, 15 Dec 2017, David Feuer wrote:

> It seems surprising that there are no Storable instances for tuple types. I would expect any tuple of Storable
> types to be Storable. To provide a sensible FFI experience, the order of the fields should be preserved. Since
> Storable generally aligns values, I believe elements should be aligned within tuples as well, in the default
> fashion used for C structs. We could offer a Packed newtype to override this behavior.

I had the same suggestion when we discussed instance Storable (). Sven 
Panne answered:
    http://mail.haskell.org/pipermail/libraries/2015-June/025903.html