distributed-process

Cloud Haskell: Erlang-style concurrency in Haskell

https://haskell-distributed.github.io/

LTS Haskell 24.60:	0.7.8@rev:1
Stackage Nightly 2026-09-22:	0.7.9
Latest on Hackage:	0.7.9

See all snapshots distributed-process appears in

BSD-3-Clause licensed by Duncan Coutts, Nicolas Wu, Edsko de Vries

Maintained by The Distributed Haskell team

This version can be pinned in stack with:distributed-process-0.7.9@sha256:68be167ab6d54bd7544f54afc7c24b668c11c859c375b101699eee3fd13398db,6230

Module documentation for 0.7.9

Control
- Control.Distributed
  - Control.Distributed.Process
    - Control.Distributed.Process.Closure
    - Control.Distributed.Process.Debug
    - Control.Distributed.Process.Internal
    - Control.Distributed.Process.Management
      - Control.Distributed.Process.Management.Internal
        Control.Distributed.Process.Management.Internal.Agent
        
        Control.Distributed.Process.Management.Internal.Bus
        
        Control.Distributed.Process.Management.Internal.Trace
        Control.Distributed.Process.Management.Internal.Trace.Primitives
        
        Control.Distributed.Process.Management.Internal.Trace.Remote
        
        Control.Distributed.Process.Management.Internal.Trace.Tracer
        
        Control.Distributed.Process.Management.Internal.Trace.Types
        
        Control.Distributed.Process.Management.Internal.Types
    - Control.Distributed.Process.Node
    - Control.Distributed.Process.Serializable
    - Control.Distributed.Process.UnsafePrimitives

Depends on 17 packages(full list with versions):

base, binary, bytestring, containers, data-accessor, deepseq, distributed-static, exceptions, hashable, mtl, network-transport, random, rank1dynamic, stm, syb, template-haskell, time

Used by 9 packages in nightly-2026-09-22(full list with versions):

distributed-process-async, distributed-process-client-server, distributed-process-execution, distributed-process-extras, distributed-process-monad-control, distributed-process-simplelocalnet, distributed-process-supervisor, distributed-process-systest, distributed-process-tests

This is an implementation of Cloud Haskell, as described in Towards Haskell in the Cloud by Jeff Epstein, Andrew Black, and Simon Peyton Jones (https://simon.peytonjones.org/haskell-cloud/), although some of the details are different. The precise message passing semantics are based on A unified semantics for future Erlang by Hans Svensson, Lars-Åke Fredlund and Clara Benac Earle.

You will probably also want to install a Cloud Haskell backend such as distributed-process-simplelocalnet.