From b39ff144bd47952ee06bba0b549069c635d31a31 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Wed, 15 Feb 2012 14:28:41 -0800
Subject: MergeProcess: inherit stdin for use with pdb

---
 pym/portage/dbapi/_MergeProcess.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pym/portage/dbapi/_MergeProcess.py b/pym/portage/dbapi/_MergeProcess.py
index 1747a098b..21d43dd83 100644
--- a/pym/portage/dbapi/_MergeProcess.py
+++ b/pym/portage/dbapi/_MergeProcess.py
@@ -4,6 +4,7 @@
 import io
 import platform
 import signal
+import sys
 import traceback
 
 import errno
@@ -40,6 +41,12 @@ class MergeProcess(SpawnProcess):
 			settings.reset()
 			settings.setcpv(cpv, mydb=self.mydbapi)
 
+		# Inherit stdin by default, so that the pdb SIGUSR1
+		# handler is usable for the subprocess.
+		if self.fd_pipes is None:
+			self.fd_pipes = {}
+		self.fd_pipes.setdefault(0, sys.stdin.fileno())
+
 		super(MergeProcess, self)._start()
 
 	def _lock_vdb(self):
-- 
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