The process-conduit package

[ Tags: bsd3, conduit, deprecated, library, system ] [ Propose Tags ]
Deprecated. in favor of conduit-extra

Conduits for processes. For more details:

[Skip to Readme]


Versions 0.0.0, 0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.1.0, 0.4.0, 0.4.1, 0.5.0,,,,,,,,,,,,
Dependencies base (==4.*), bytestring (>=0.9), conduit (==0.5.*), control-monad-loop (==0.1.*), mtl (>=2.0), process (>=1.0), resourcet, shakespeare-text (>=1.0), template-haskell (>=2.4 && <2.8), text (>=0.11) [details]
License BSD3
Copyright (c) 2011-2012, Hideyuki Tanaka
Author Hideyuki Tanaka
Maintainer Hideyuki Tanaka <>
Category System, Conduit
Home page
Source repo head: git clone git://
Uploaded Wed Jul 11 16:42:37 UTC 2012 by HideyukiTanaka
Distributions Debian:, NixOS:
Downloads 14480 total (134 in the last 30 days)
Rating (no votes yet) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Docs uploaded by user
Build status unknown [no reports yet]
Hackage Matrix CI




Maintainer's Corner

For package maintainers and hackage trustees

Readme for process-conduit-

[back to package description]

process-conduit: Conduit for processes


This package provides conduit for processes. Also this provides quasi-quoters for process using it.


$ cabal update
$ cabal install process-conduit


Haddock documents are here:

Quasi Quoters

process-conduit has three quasi-quoters, cmd, scmd and ccmd.

The result type of cmd is Lazy ByteString, but execution will perform strictly.

The result type of scmd and ccmd are Source ByteString m ByteString and Conduit ByteString m ByteString respectively.

If a command is failed, an exception is thrown.

Commands are executed in run-time, not compile-time.


  • Create a Source and a Conduit of process
import qualified Data.Conduit as C
import qualified Data.Conduit.Binary as CB
import Data.Conduit.Process
import System.IO

main :: IO ()
main = C.runResourceT $ do
  sourceCmd "ls" C.$= conduitCmd "sort" C.$$ CB.sinkHandle stdout
  • Invoke a process simply
{-# LANGUAGE QuasiQuotes #-}
import System.Process.QQ

main = print =<< [cmd|ls|]
  • Conduit Quasi-Quoters
main :: IO ()
main = runResourceT $ do
  [scmd|ls|] $= [ccmd|sort|] $$ sinkHandle stdout
main = do
  [url] <- getArgs
  print =<< [cmd|curl #{url}|]