--- a/debian/patches/reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible-build.patch	2020-07-18 10:54:52.109133762 +0100
@@ -0,0 +1,36 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2020-07-18
+
+--- logilab-common-1.7.2.orig/logilab/common/proc.py
++++ logilab-common-1.7.2/logilab/common/proc.py
+@@ -171,12 +171,14 @@ class MemorySentinel(Thread):
+     daemonic thread
+     """
+ 
+-    def __init__(self, interval, memory_limit, gpid=os.getpid()):
++    def __init__(self, interval, memory_limit, gpid=None):
+         Thread.__init__(self, target=self._run, name="Test.Sentinel")
+         self.memory_limit = memory_limit
+         self._stop = Event()
+         self.interval = interval
+         self.setDaemon(True)
++        if gpid is None:
++            gpid = os.getpid()
+         self.gpid = gpid
+ 
+     def stop(self):
+--- logilab-common-1.7.2.orig/logilab/common/pytest.py
++++ logilab-common-1.7.2/logilab/common/pytest.py
+@@ -209,8 +209,10 @@ def load_pytest_conf(path, parser):
+     return namespace.get("CustomPyTester", PyTester)
+ 
+ 
+-def project_root(parser, projdir=os.getcwd()):
++def project_root(parser, projdir=None):
+     """try to find project's root and add it to sys.path"""
++    if projdir is None:
++        projdir = os.getcwd()
+     previousdir = curdir = osp.abspath(projdir)
+     testercls = PyTester
+     conf_file_path = osp.join(curdir, CONF_FILE)
--- a/debian/patches/reproducible-build.patch~	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible-build.patch~	2020-07-18 10:52:56.886826995 +0100
@@ -0,0 +1,22 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2020-07-18
+
+--- logilab-common-1.7.2.orig/logilab/common/proc.py
++++ logilab-common-1.7.2/logilab/common/proc.py
+@@ -171,12 +171,14 @@ class MemorySentinel(Thread):
+     daemonic thread
+     """
+ 
+-    def __init__(self, interval, memory_limit, gpid=os.getpid()):
++    def __init__(self, interval, memory_limit, gpid=None):
+         Thread.__init__(self, target=self._run, name="Test.Sentinel")
+         self.memory_limit = memory_limit
+         self._stop = Event()
+         self.interval = interval
+         self.setDaemon(True)
++        if gpid is None:
++            gpid = os.getpid()
+         self.gpid = gpid
+ 
+     def stop(self):
--- a/debian/patches/series	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/series	2020-07-18 10:52:54.078770568 +0100
@@ -0,0 +1 @@
+reproducible-build.patch
--- a/logilab/common/proc.py	2020-07-18 10:42:16.017506293 +0100
--- b/logilab/common/proc.py	2020-07-18 10:54:01.744127425 +0100
@@ -171,12 +171,14 @@
     daemonic thread
     """
 
-    def __init__(self, interval, memory_limit, gpid=os.getpid()):
+    def __init__(self, interval, memory_limit, gpid=None):
         Thread.__init__(self, target=self._run, name="Test.Sentinel")
         self.memory_limit = memory_limit
         self._stop = Event()
         self.interval = interval
         self.setDaemon(True)
+        if gpid is None:
+            gpid = os.getpid()
         self.gpid = gpid
 
     def stop(self):
--- a/logilab/common/pytest.py	2020-07-18 10:42:16.017506293 +0100
--- b/logilab/common/pytest.py	2020-07-18 10:54:48.529062323 +0100
@@ -209,8 +209,10 @@
     return namespace.get("CustomPyTester", PyTester)
 
 
-def project_root(parser, projdir=os.getcwd()):
+def project_root(parser, projdir=None):
     """try to find project's root and add it to sys.path"""
+    if projdir is None:
+        projdir = os.getcwd()
     previousdir = curdir = osp.abspath(projdir)
     testercls = PyTester
     conf_file_path = osp.join(curdir, CONF_FILE)