diff --git a/System/Process.hs b/System/Process.hs
--- a/System/Process.hs
+++ b/System/Process.hs
@@ -199,7 +199,6 @@
     | hdl /= stdin && hdl /= stdout && hdl /= stderr = hClose hdl
   maybeCloseStd _ = return ()
 
-{-
 -- | A 'C.bracket'-style resource handler for 'createProcess'.
 --
 -- Does automatic cleanup when the action finishes. If there is an exception
@@ -214,7 +213,6 @@
 -- >   ...
 --
 -- @since 1.4.3.0
--}
 withCreateProcess
   :: CreateProcess
   -> (Maybe Handle -> Maybe Handle -> Maybe Handle -> ProcessHandle -> IO a)
diff --git a/System/Process/Common.hs b/System/Process/Common.hs
--- a/System/Process/Common.hs
+++ b/System/Process/Common.hs
@@ -9,6 +9,8 @@
     , ProcRetHandles (..)
     , withFilePathException
     , PHANDLE
+    , GroupID
+    , UserID
     , modifyProcessHandle
     , withProcessHandle
     , fd_stdin
diff --git a/System/Process/Internals.hs b/System/Process/Internals.hs
--- a/System/Process/Internals.hs
+++ b/System/Process/Internals.hs
@@ -22,6 +22,13 @@
 module System.Process.Internals (
     ProcessHandle(..), ProcessHandle__(..),
     PHANDLE, closePHANDLE, mkProcessHandle,
+#ifdef WINDOWS
+    CGid(..),
+#else
+    CGid,
+#endif
+    GroupID,
+    UserID,
     modifyProcessHandle, withProcessHandle,
     CreateProcess(..),
     CmdSpec(..), StdStream(..), ProcRetHandles (..),
diff --git a/System/Process/Posix.hs b/System/Process/Posix.hs
--- a/System/Process/Posix.hs
+++ b/System/Process/Posix.hs
@@ -40,7 +40,7 @@
 import qualified System.Posix.IO as Posix
 import System.Posix.Process (getProcessGroupIDOf)
 
-import System.Process.Common
+import System.Process.Common hiding (mb_delegate_ctlc)
 
 #include "HsProcessConfig.h"
 #include "processFlags.h"
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,11 @@
 # Changelog for [`process` package](http://hackage.haskell.org/package/process)
 
+## 1.6.1.1 *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
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -675,7 +675,6 @@
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
-with_cc
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1291,11 +1290,6 @@
    esac
   cat <<\_ACEOF
 
-Optional Packages:
-  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
-  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
-C compiler
-
 Some influential environment variables:
   CC          C compiler command
   CFLAGS      C compiler flags
@@ -2332,12 +2326,6 @@
 
 ac_config_headers="$ac_config_headers include/HsProcessConfig.h"
 
-
-
-# Check whether --with-cc was given.
-if test "${with_cc+set}" = set; then :
-  withval=$with_cc; CC=$withval
-fi
 
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
diff --git a/process.cabal b/process.cabal
--- a/process.cabal
+++ b/process.cabal
@@ -1,5 +1,5 @@
 name:          process
-version:       1.6.0.0
+version:       1.6.1.0
 -- NOTE: Don't forget to update ./changelog.md
 license:       BSD3
 license-file:  LICENSE
@@ -11,6 +11,12 @@
 cabal-version: >=1.10
 description:
     This package contains libraries for dealing with system processes.
+    .
+    The typed-process package is a more recent take on a process API,
+    which uses this package internally. It features better binary
+    support, easier concurrency, and a more composable API. You can
+    read more about it at
+    <https://haskell-lang.org/library/typed-process>.
 
 extra-source-files:
     aclocal.m4