Re: Sundials issues with ode15

[Carlo De Falco]

> On 22 Nov 2017, at 11:07, Juan Pablo Carbajal <address@hidden> wrote:
> 
>> I think this depends a lot on how far away in the future the Octave 4.4 
>> release
>> is, the 4.2 branch does not use sundials.
>> 
>> c.
> My point is that not only depends on that, but on the lag of popular
> distributions to update sundials. For example, ubuntu uses sundials
> 2.5.0 since Trusty, released on 17 April 2014 and Artful released in
> 19 October 2017, there have been 5 new releases of sundials in this
> period of time. The next release, bionic, will have 2.7.0 on it.
> 
> Therefore I think a more than reasonable question is when will the
> most proper distributions move to latest sundials? How does that
> schedule match octave's?
> I think it is quite cumbersome to keep track of this.
> 
> I guess one solution would be to keep octave to the latest sundials

That's not the only possible point of view.
Probably there is not much demand for SUNDIALS itself in 
ubuntu which justifies the slow update of the package
but having an optional dependence on sundials 3.0 in Octave 
can motivate the downstream packagers to upgrade sundials when 
Octave 4.4 is released. 

That will definetily not happen in any of the distributions you
mentioned above as they will not include Octave 4.4 which is not
released yet.

> and revive the odepkg package.

I agree we are in need of a release of odepkg, but
ode15{s,c} have never been in odepkg and will never be
so this is seems an unrelated topic to me.

c.