Is there a decent alternative to "pip bundle"?

Is there a decent alternative to "pip bundle"?

I use pip bundle for my production systems, and today I was greeted with
the following disheartening message:
###############################################
## ##
## Due to lack of interest and maintenance, ##
## 'pip bundle' and support for installing ##
## from *.pybundle files is now deprecated, ##
## and will be removed in pip v1.5. ##
## ##
###############################################
My servers auto-scale and build themselves out automatically, but I've
been burned before by relying on PyPi being available. Instead, I use pip
bundle and commit the .pybundle file to the source git repo. This means I
only need to rely on a single source for building my servers.
With pip bundle going away (and who knows when) I need an alternative
method to use - are there any suggestions or similar methods of packaging
up dependencies for production distribution?
Thanks!