Fallback if git is absent

When building packages if git is absent, then we should
fall back to a safe default.

Closes-Bug: #1552251
Change-Id: I5201b8537b76ff731600720c8310ad4a2b9256e0

1 files changed, 6 insertions, 2 deletions

diff --git a/doc/source/conf.py b/doc/source/conf.py
index 69d6b76..2e1d9fa 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -3,6 +3,7 @@
 import os
 import subprocess
 import sys
+import time
 
 sys.path.insert(0, os.path.abspath('../..'))
 # -- General configuration ----------------------------------------------------
@@ -59,8 +60,11 @@ htmlhelp_basename = '%sdoc' % project
 
 git_cmd = ["git", "log", "--pretty=format:'%ad, commit %h'", "--date=local",
            "-n1"]
-html_last_updated_fmt = subprocess.check_output(git_cmd,
-                                                stdin=subprocess.PIPE)
+try:
+    html_last_updated_fmt = subprocess.Popen(
+        git_cmd, stdout=subprocess.PIPE).communicate()[0]
+except Exception:
+    html_last_updated_fmt = time.ctime()
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass