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

## 1.6.7.0 *November 2019*

* Fix a race condition on Windows that happens when you use process jobs and one of
  the child processes terminates but doesn't release its resources immediately.
  Control returns to the caller too soon in this scenario. See [#159](https://github.com/haskell/process/pull/159)

## 1.6.6.0 *October 2019*

* Fix a potential privilege escalation issue (or, more precisely, privileges
  not being dropped when this was the user's intent) where the groups of the
  spawning process's user would be incorrectly retained due to a missing call to
  `initgroups` [#149].
* Bug fix: Prevent stripping undecodable bytes from environment variables
  when in a non-unicode locale.
  [#152](https://github.com/haskell/process/issues/152)
* Expose `runInteractiveProcess_lock` in `System.Process.Internals`
  [#154](https://github.com/haskell/process/pull/154)

## 1.6.5.1 *June 2019*

* Version bound bumps
* Slightly nicer error messages for internal errors

## 1.6.5.0 *December 2018*

* Bug fix: On Windows ignore ERROR_ACCESS_DENIED for TerminateProcess() if the process did terminate
  [#110](https://github.com/haskell/process/issues/110)
* Improve documentation of the `NoStream` data constructor

## 1.6.4.0 *July 2018*

* Bug fix: Don't leak pipes on failure
  [#122](https://github.com/haskell/process/issues/122)
* Expose `cleanupProcess` from `System.Process`
  [#130](https://github.com/haskell/process/pull/130)
* Drop support for GHC before 7.10.3

## 1.6.3.0 *January 2018*

* Added `getPid` and export of platform specific `Pid` type
  [#109](https://github.com/haskell/process/pull/109)

## 1.6.2.0 *October 2017*

* Allow async exceptions to be delivered to masked thread calling `waitForProcess`
  [#101](https://github.com/haskell/process/pull/101)
* Update Win32 package version to 2.6.x

## 1.6.1.0 *July 2017*

* 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)

## 1.6.0.0 *February 2017*

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

## 1.5.0.0 *February 2017*

* Bug fix: Don't close already closed pipes
  [#81](https://github.com/haskell/process/pull/81)
* Relax version bounds of Win32 to allow 2.5.
* 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.

## 1.4.3.0 *December 2016*

* New exposed `withCreateProcess`
* Derive `Show` and `Eq` for `CreateProcess`, `CmdSpec`, and `StdStream`

## 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

## 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

## 1.4.0.0 *November 2015*

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

## 1.3.0.0 *August 2015*

* Add `StdStream(NoStream)` to have standard handles closed. [#13](https://github.com/haskell/process/pull/13)
* Support for Windows `DETACHED_PROCESS` and `setsid` [#32](https://github.com/haskell/process/issues/32)
* Support for Windows `CREATE_NEW_CONSOLE` [#38](https://github.com/haskell/process/issues/38)

## 1.2.3.0 *March 2015*

  * [Meaningful error message when exe not found on close\_fds is
  True](https://ghc.haskell.org/trac/ghc/ticket/3649#comment:10)

  * New functions `readCreateProcess` and `readCreateProcessWithExitCode`

## 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).

## 1.2.1.0  *Dec 2014*

  * Add support for `base-4.8.0.0`

  * Remove Hugs98 specific code

  * New `IsString CmdSpec` instance

  * Expose documentation for `System.Process.Internals`

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

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

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

## 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`