make bddeb work with python3 or python2

painful, and not perfect, but at this point the output builds
on a vivid system python2 (bddeb --python2) or python3.

 * remove use of cheetah by bddeb in favor of builtin renderer
 * add '--python2' flag to bddeb and knowledge of python 2 and python3
   package names.
 * read-dependencies can now read test-requirements also.
 * differenciate from build-requirements and runtime requirements.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/unittests/helpers.py b/tests/unittests/helpers.py
index f92e7ac2..6b9394b3 100644
--- a/tests/unittests/helpers.py
+++ b/tests/unittests/helpers.py
@@ -1,3 +1,5 @@
+from __future__ import print_function
+
 import os
 import sys
 import shutil
@@ -275,3 +277,17 @@ def populate_dir(path, files):
         with open(os.path.join(path, name), "w") as fp:
             fp.write(content)
             fp.close()
+
+try:
+    skipIf = unittest.skipIf
+except AttributeError:
+    # Python 2.6.  Doesn't have to be high fidelity.
+    def skipIf(condition, reason):
+        def decorator(func):
+            def wrapper(*args, **kws):
+                if condition:
+                    return func(*args, **kws)
+                else:
+                    print(reason, file=sys.stderr)
+            return wrapper
+        return decorator