Fix to avoid sandbox violation when installing node as bdist egg

.travis.yml

@@ -5,6 +5,7 @@ python:
 env:
   - SETUP_COMMAND="install"
   - SETUP_COMMAND="build"
+  - SETUP_COMMAND="-q bdist_egg --dist-dir /tmp/easy_install/virtual-node"
 install:
   - python setup.py $SETUP_COMMAND
 script:

setup.py

@@ -21,6 +21,13 @@
 from distutils.command.build import build as _build
 
 
+from setuptools.sandbox import DirectorySandbox
+def violation(*args):
+    pass
+DirectorySandbox._old = DirectorySandbox._violation
+DirectorySandbox._violation = violation
+
+
 class node_bdist_egg(_bdist_egg):
 
     #def __init__(self, *args, **kwargs):

tox.ini

@@ -1,7 +1,13 @@
 #content of: tox.ini , put in same dir as setup.py
 [tox]
-envlist = py26,py27,py27-devel
+envlist = py26,py27,py27-build
 [testenv:py26,py27]
-commands = python setup.py install
-[testenv:py27-devel]
-commands = python setup.py devel
+commands =
+    python setup.py install
+    nosetests tests
+[testenv:py27-build]
+site-packages=True
+distribute=False
+commands =
+    python setup.py build
+    nosetests tests