gistfile1.txt

diff --git a/master/buildbot/process/build.py b/master/buildbot/process/build.py
index 3ff063d..e0f533f 100644
--- a/master/buildbot/process/build.py
+++ b/master/buildbot/process/build.py
@@ -183,6 +183,12 @@ class Build:
         # object that came from the config, and get its properties
         buildslave_properties = slavebuilder.slave.properties
         self.getProperties().updateFromProperties(buildslave_properties)
+        try:
+            from twisted.python.reflect import namedModule
+            path = namedModule(slavebuilder.slave.slave_system + "path") # only works with posix/win32 slaves
+            self.setProperty("workdir", path.join(slavebuilder.slave.slave_basedir, self.builder.slavebuilddir), "slave")
+        except:
+            log.err(Failure())
 
         self.slavename = slavebuilder.slave.slavename
         self.build_status.setSlavename(self.slavename)