Send unwanted output to DEVNULL rather than capturing it

Author: takluyver

src/pyproject_hooks/_impl.py

@@ -95,7 +95,7 @@ def quiet_subprocess_runner(
 ) -> None:
     """Call the subprocess while suppressing output.
 
-    This uses :func:`subprocess.run` with `stdout=PIPE, stderr=STDOUT` under the hood.
+    This uses :func:`subprocess.run` with `stdout=DEVNULL, stderr=DEVNULL` under the hood.
     """
     env = os.environ.copy()
     if extra_environ:
@@ -105,8 +105,8 @@ def quiet_subprocess_runner(
         cmd,
         cwd=cwd,
         env=env,
-        stdout=subprocess.PIPE,
-        stderr=subprocess.STDOUT,
+        stdout=subprocess.DEVNULL,
+        stderr=subprocess.DEVNULL,
         check=True,
     )