Add compatibility with ghc-7.10

[qnikst]

No description provided.

[qnikst]

This PR depends on:

(under review) haskell-distributed/distributed-static#4
(merged, not published) haskell-distributed/rank1dynamic#9
(merged, not published) haskell-distributed/network-transport-tcp#9
(merged, not published) haskell-distributed/network-transport#8

[qnikst]

I have splitted commits into small one and verified build on 7.8 and 7.10

[facundominguez]

Building with ghc-7.4 is failing for some reason.

[mboes]

We should depend on deepseq>=1.4 and drop the where rnf (NodeId a) = rnf a seq ().

http://hackage.haskell.org/package/deepseq-1.4.1.1/docs/Control-DeepSeq.html#t:NFData

Unless I'm misunderstanding the point of this change?

[qnikst]

There are 2 possibilities, use generic deriving on >deepseq-1.4 and write instances manually on previous versions, or write instances manually everywhere. I find latter approach more straightforward as former implies latter under if-condition.

[qnikst]

I fixed NFData instance for LazyByteString argument.

[hyperthunk]

Can't build this right now and travis is failing. Can anyone confirm it had been fixed for 7.4?

[qnikst]

I see "all is well" in travis report:

https://travis-ci.org/haskell-distributed/distributed-process/builds/57053812

@hyperthunk you can run rebuild in top right corner (near settings).

[hyperthunk]

Yes will do, I've been away for a month so I'm just catching up again.

[isaiah]

Compiling failed on 7.10.1

src/Control/Distributed/Process/Internal/Types.hs:141:47:
    No instance for (NFData NT.EndPointAddress)
      arising from a use of ‘rnf’
    In the first argument of ‘seq’, namely ‘rnf a’
    In the expression: rnf a `seq` ()
    In an equation for ‘rnf’: rnf (NodeId a) = rnf a `seq` ()
cabal: Error: some packages failed to install:
distributed-process-0.5.3 failed during the building phase. The exception was:
ExitFailure 1

[qnikst]

@isaiah have you used patched version of network-transport? Almost all parts of distributed-process stack have changes. But I hope we will get over this situation soon.

[isaiah]

@qnikst Yes, install network-transport from master does fix the problem. Thanks.

[qnikst]

This one works good for several people on the zurihack, and passes tests, so I'm going to merge this one.