dependencies version checking on setup.py

diff --git a/setup.py b/setup.py
index 9e4719a..dce8a6b 100755 (executable)
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,21 @@
 #!/usr/bin/env python
 # vim: set fileencoding=utf-8
-from distutils.core import setup, Extension, Command
+from distutils.core import setup
+import sys
+
+# CHECK dependencies
+# Python >= 2.6
+if sys.hexversion < 0x2060000:
+    raise RuntimeError("Python version >= 2.6 required")
+# ipaddr >= 2.1.7
+try:
+    import ipaddr
+    l = ipaddr.__version__.split('.')
+    l.reverse()
+    if sum( int(l[i])*pow(10,i) for i in xrange(len(l))) < 217:
+        raise RuntimeError("ipaddr >= 2.1.7 is required")
+except:
+    raise RuntimeError("ipaddr >= 2.1.7 is required. You can download from http://ipaddr-py.googlecode.com/files/ipaddr-2.1.7.tar.gz")
 
 setup(
         name        = "nepi",