From fed6216d437359473ef0c79c77ab06825adce3aa Mon Sep 17 00:00:00 2001
From: Ian Jackson <ian.jackson@eu.citrix.com>
Date: Mon, 23 Jan 2017 16:03:15 +0000
Subject: [PATCH] debian_xen/debian.py: Allow ~pre versions

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
 debian/lib/python/debian_xen/debian.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/debian/lib/python/debian_xen/debian.py b/debian/lib/python/debian_xen/debian.py
index 4b7037bc65..f541494e9a 100644
--- a/debian/lib/python/debian_xen/debian.py
+++ b/debian/lib/python/debian_xen/debian.py
@@ -16,6 +16,9 @@ class VersionXen(Version):
     (?:
         \+hg-\d+.[a-z0-9]+
     )?
+    (?:
+        ~pre\.\d{4,}\.\d{2}\.\d{2}(?:\b[-+0-9a-z])?
+    )?
     |
     ~hg-\d+.[a-z0-9]+
 )
-- 
2.30.2