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# Changelog for [`process` package](http://hackage.haskell.org/package/process)

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## Unreleased changes

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* Bug fix: Don't leak pipes on failure
  [#122](https://github.com/haskell/process/issues/122)
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* Expose `cleanupProcess` from `System.Process` 
  [#130](https://github.com/haskell/process/pull/130)
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## 1.6.3.0 *January 2018*
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* Added `getPid` and export of platform specific `Pid` type
  [#109](https://github.com/haskell/process/pull/109)

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## 1.6.2.0 *October 2017*
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* Allow async exceptions to be delivered to masked thread calling `waitForProcess`
  [#101](https://github.com/haskell/process/pull/101)
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* Update Win32 package version to 2.6.x
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## 1.6.1.0 *July 2017*
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* Expose `CGid`, `GroupID`, and `UserID` from `System.Process.Internals`
  [#90](https://github.com/haskell/process/issues/90)
  [#91](https://github.com/haskell/process/pull/91)

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## 1.6.0.0 *February 2017*
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* Fix: waitForProcess race condition
  [#46](https://github.com/haskell/process/issues/46)
  [#58](https://github.com/haskell/process/pull/58)

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## 1.5.0.0 *February 2017*
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* Bug fix: Don't close already closed pipes
  [#81](https://github.com/haskell/process/pull/81)
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* Relax version bounds of Win32 to allow 2.5.
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* Add support for monitoring process tree for termination with the parameter `use_process_jobs`
  in `CreateProcess` on Windows. Also added a function `terminateJob` to kill entire process tree.
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## 1.4.3.0 *December 2016*
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* New exposed `withCreateProcess`
* Derive `Show` and `Eq` for `CreateProcess`, `CmdSpec`, and `StdStream`
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## 1.4.2.0 *January 2016*

* Added `createPipeFD` [#52](https://github.com/haskell/process/pull/52)
    * New function `createPipeFD` added which returns a POSIX File Descriptor (CInt)
      instead of a GHC Handle to a pipe

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## 1.4.1.0 *November 2015*

* Use less CPP [#47](https://github.com/haskell/process/pull/47)
    * Refactor to have separate Windows and POSIX modules internally
    * Remove the broken non-GHC code paths

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## 1.4.0.0 *November 2015*
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* Added `child_user` and `child_group` to `CreateProcess` for unix. [#45](https://github.com/haskell/process/pull/45)

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## 1.3.0.0 *August 2015*
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* Add `StdStream(NoStream)` to have standard handles closed. [#13](https://github.com/haskell/process/pull/13)
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* Support for Windows `DETACHED_PROCESS` and `setsid` [#32](https://github.com/haskell/process/issues/32)
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* Support for Windows `CREATE_NEW_CONSOLE` [#38](https://github.com/haskell/process/issues/38)
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## 1.2.3.0 *March 2015*
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  * [Meaningful error message when exe not found on close\_fds is
  True](https://ghc.haskell.org/trac/ghc/ticket/3649#comment:10)

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  * New functions `readCreateProcess` and `readCreateProcessWithExitCode`
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## 1.2.2.0  *Jan 2015*

  * Fix delegated CTRL-C handling in `createProcess` in case of failed
    process creation. See [issue #15](https://github.com/haskell/process/issues/15)
    for more details.

  * `waitpid` on child PID after pre-exec failure in child to prevent zombies.
    See also [issue #14](https://github.com/haskell/process/issues/14).

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## 1.2.1.0  *Dec 2014*
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  * Add support for `base-4.8.0.0`

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  * Remove Hugs98 specific code

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  * New `IsString CmdSpec` instance

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  * Expose documentation for `System.Process.Internals`

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  * With GHC 7.10, `System.Cmd` and `System.Process` are now `Safe`
    (when compiled with older GHC versions they are just `Trustworthy`)

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  * Expose `createProcess_` function, and document behavior of `UseHandle` for
    `createProcess`. See [issue #2](https://github.com/haskell/process/issues/2).

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  * New `System.Process.createPipe` operation.
    See also [GHC #8943](https://ghc.haskell.org/trac/ghc/ticket/8943)
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## 1.2.0.0  *Dec 2013*

  * Update to Cabal 1.10 format
  * Remove NHC specific code
  * Add support for `base-4.7.0.0`
  * Improve `showCommandForUser` to reduce redundant quoting
  * New functions `callProcess`, `callCommand`, `spawnProcess` and `spawnCommand`
  * Implement WCE handling according to http://www.cons.org/cracauer/sigint.html
  * New `delegate_ctlc` field in `CreateProcess` for WCE handling
  * Use `ExitFailure (-signum)` on Unix when a proc is terminated due to
    a signal.
  * Deprecate `module System.Cmd`
  * On non-Windows, the child thread now comunicates any errors back
    to the parent thread via pipes.
  * Fix deadlocks in `readProcess` and `readProcessWithExitCode`