[Distutils] easy_install --always-copy and setup.py develop

I have a package (PasteDeploy) installed with "python setup.py develop", at version 0.9.7dev-r5544. There's a released version 0.9.6. When I do "easy_install --always-copy --install-dir /some/dir SomePackageThatRequiresPasteDeploy" it gives me errors like error:

Could not find suitable distribution for Requirement.parse('PasteDeploy==0.9.7dev-r5544') (--always-copy skips system and development eggs)

There is no requirement like that, it seems to be coming up with that version specifier on its own. If I try to install PasteDeploy specifically it works fine. If I remove that egg-link from develop it works fine.

(Note: my end goal is to create a bundle of all the eggs that an app needs to run)