In the chroot, don't do any path mucking. Just run chromite.

bin/chromite

Index: bin/chromite
diff --git a/bin/chromite b/bin/chromite
index b632b610b038b9127d39283d5ef44923f2c002d4..48b09070c3b658c8867ce211d73e0bd987606234 100755
--- a/bin/chromite
+++ b/bin/chromite
@@ -30,19 +30,23 @@ import sys
 def Search(path):
   """Return an iterator of lists of places to look for chromite."""
 
-  # Look in $CROS_WORKON_SRCROOT first.
-  if 'CROS_WORKON_SRCROOT' in os.environ:
-    yield [os.environ['CROS_WORKON_SRCROOT']]
+  if os.path.exists('/etc/debian_chroot'):
+    # We're in the chroot.  Chromite should be in the python path inside the
+    # chroot, so we don't do any searching.  NOTE that we purposely don't want
+    # CROS_WORKON_SRCROOT in the python path.
+    yield []
+  else:
+    # Look in $CROS_WORKON_SRCROOT first.  The idea is that a user would set
+    # this manually if they wanted to specify a particular version of chromite.
+    if 'CROS_WORKON_SRCROOT' in os.environ:
+      yield [os.environ['CROS_WORKON_SRCROOT']]
 
-  # Try the path as is
-  yield []
-
-  # Search upward until we either end up with a blank dir or the "parent" dir
-  # doesn't change.
-  prev_path = None
-  while path and path != prev_path:
-    yield [path]
-    path, prev_path = os.path.dirname(path), path
+    # Search upward until we either end up with a blank dir or the "parent" dir
+    # doesn't change.
+    prev_path = None
+    while path and path != prev_path:
+      yield [path]
+      path, prev_path = os.path.dirname(path), path
 
 
 for path in Search(os.getcwd()):