Tox depends on kombu master

tox.ini

@@ -16,7 +16,7 @@ commands = {toxinidir}/contrib/release/removepyc.sh {toxinidir}
            {envbindir}/pip install                              \
                 --download-cache={toxworkdir}/_download         \
                 -r{toxinidir}/requirements/test-py3k.txt
-
+           pip install http://github.com/celery/kombu/zipball/master
            {toxinidir}/contrib/release/py3k-run-tests {toxinidir}
 
 [testenv:py33]
@@ -30,6 +30,7 @@ commands = {toxinidir}/contrib/release/removepyc.sh {toxinidir}
                 --download-cache={toxworkdir}/_download         \
                 -r{toxinidir}/requirements/test-py3k.txt
 
+           pip install http://github.com/celery/kombu/zipball/master
            {toxinidir}/contrib/release/py3k-run-tests {toxinidir}
 
 [testenv:py27]
@@ -37,6 +38,7 @@ basepython = python2.7
 deps = -r{toxinidir}/requirements/default.txt
        -r{toxinidir}/requirements/test.txt
 commands = {toxinidir}/contrib/release/removepyc.sh {toxinidir}
+           pip install http://github.com/celery/kombu/zipball/master
            nosetests --with-xunit                               \
                      --xunit-file={toxinidir}/nosetests.xml     \
                      --with-coverage3 --cover3-xml              \
@@ -49,6 +51,7 @@ deps = -r{toxinidir}/requirements/default.txt
        -r{toxinidir}/requirements/py26.txt
        -r{toxinidir}/requirements/test.txt
 commands = {toxinidir}/contrib/release/removepyc.sh {toxinidir}
+           pip install http://github.com/celery/kombu/zipball/master
            nosetests --with-xunit                               \
                      --xunit-file={toxinidir}/nosetests.xml     \
                      --with-coverage3 --cover3-xml              \