HamlPy cannot run from library.zip about hamlpy

[a1s]

This patch effectively disables wrapping for all Django template loaders at HamlPy module load time when Django modules do not reside on file system:

=== modified file 'hamlpy/template/utils.py'
--- hamlpy/template/utils.py    2013-05-09 01:59:39 +0000
+++ hamlpy/template/utils.py    2013-10-02 08:18:29 +0000
@@ -1,6 +1,6 @@
 import imp
 from os import listdir
-from os.path import dirname, splitext
+from os.path import dirname, isdir, splitext

 try:
   from django.template import loaders
@@ -25,7 +25,10 @@

 def package_contents(package):
     package_path = dirname(loaders.__file__)
-    contents = set([splitext(module)[0]
-            for module in listdir(package_path)
-            if module.endswith(MODULE_EXTENSIONS)])
+    if isdir(package_path):
+        contents = set([splitext(module)[0]
+                for module in listdir(package_path)
+                if module.endswith(MODULE_EXTENSIONS)])
+    else:
+        contents = set()
     return contents

With this change, one cannot import an arbitrary Django loader from hamlpy.template.

Loaders hamlpy.template.loaders.HamlPyFilesystemLoader and hamlpy.template.loaders.HamlPyAppDirectoriesLoader are not affected by this patch and work as expected as soon as module loading error is fixed.

[a1s]

By the way, I think more Pythonic approach would be to provide a way for explicit wrapping of needed loaders (in a way similar to what Django cached loader does) and not automatically create wrappers for everything we can find on a file system.

[a1s]

This is fixed in 84abeed (courtesy of @KACAH).