dont make image if no svgwrite module

diff --git a/src/spec/ifaceprint.py b/src/spec/ifaceprint.py
index 4a4104f41ded15c4acef89733e56dc6e62ec9909..657d9623b63809ba6f17a1034602a027754ad204 100644 (file)
--- a/src/spec/ifaceprint.py
+++ b/src/spec/ifaceprint.py
@@ -2,7 +2,6 @@
 
 from copy import deepcopy
 from collections import OrderedDict
-import svgwrite
 from math import pi
 
 
@@ -10,6 +9,12 @@ def create_sv(fname, pins):
     """unsophisticated drawer of an SVG
     """
 
+    try:
+        import svgwrite
+    except ImportError:
+        print ("WARNING, no SVG image, not producing image %s" % fname)
+        return
+
     scale = 15
     width = len(pins['pads.north']) * scale
     height = len(pins['pads.east']) * scale