switch from System.Cmd.Utils to System.Process

Test suite now passes with -threaded!

I traced back all the hangs with -threaded to System.Cmd.Utils. It seems
it's just crappy/unsafe/outdated, and should not be used. System.Process
seems to be the cool new thing, so converted all the code to use it
instead.

In the process, --debug stopped printing commands it runs. I may try to
bring that back later.

Note that even SafeSystem was switched to use System.Process. Since that
was a modified version of code from System.Cmd.Utils, it needed to be
converted too. I also got rid of nearly all calls to forkProcess,
and all calls to executeFile, which I'm also doubtful about working
well with -threaded.

1 files changed, 1 insertions, 2 deletions

diff --git a/Common.hs b/Common.hs
index 7f07781ce..04ec1e044 100644
--- a/Common.hs
+++ b/Common.hs
@@ -13,16 +13,15 @@ import Data.String.Utils as X
 import System.Path as X
 import System.FilePath as X
 import System.Directory as X
-import System.Cmd.Utils as X hiding (safeSystem)
 import System.IO as X hiding (FilePath)
 import System.Posix.Files as X
 import System.Posix.IO as X
-import System.Posix.Process as X hiding (executeFile)
 import System.Exit as X
 
 import Utility.Misc as X
 import Utility.Exception as X
 import Utility.SafeCommand as X
+import Utility.Process as X
 import Utility.Path as X
 import Utility.Directory as X
 import Utility.Monad as X