Move Builder.arch into util.arch.

This makes it easy to add a test case.

1 files changed, 9 insertions, 0 deletions

diff --git a/morphlib/util.py b/morphlib/util.py
index 850d943f..430fdc20 100644
--- a/morphlib/util.py
+++ b/morphlib/util.py
@@ -17,6 +17,15 @@
 '''Utility functions for morph.'''
 
 
+import os
+
+
+def arch():
+    '''Return the CPU architecture of the current host.'''
+    return os.uname()[4]
+
+
+
 def indent(string, spaces=4):
     '''Return ``string`` indented by ``spaces`` spaces.