Releasing containers -- before GHC 7.8?

Milan Straka fox at
Tue Jan 14 21:33:16 UTC 2014

Hi Johan,

I think releasing 0.5.4 is a good idea. Could I ask you to do the
release as usual, please?

We added the splitRoot function, so it should really be 0.5.4 and not
only Actually, we added Functor instance to Graph.SCC and
Functor and Applicative instances to Graph.SetM, but Graph is rarely
used, so I would deliberately break PVP and not do a major version bump.


> -----Original message-----
> From: Ryan Newton <rrnewton at>
> Sent: 14 Jan 2014, 11:41
> Hi guys,
> I'm wondering if we can do a hackage release of  That "splitRoot"
> function is in there, and my ability to deploy parallel code that uses
> containers depends on people getting it!  Are there any other changes since
> Replacing containers seems like a real pain for end users, so it would be
> great if could come with GHC 7.8.  Currently, it looks like the GHC
> repo is up to date in that it includes
> I realize it is late days for this, but:
>    - It's been a month since we put splitRoot in; I've been using it
>    heavily and it I'm pretty confident that it's correct.  (It's so simple!)
>    - Nothing else is touched, so there is very little liability associated
>    with this version bump.
> And, as you know, if we don't make this round it's a long latency before
> the next chance.  That is, before we can expect people to do parallel folds
> over Data.Set or Data.Map without installation headache.
> Any objections?
>   -Ryan

More information about the Libraries mailing list