Dependencies from git aren't being installed? (setuptools, pip)

[Samuel Marks]

I'm sure I've just misconfigured my setup.py, requirements.txt and/or project structure, but I've tried:
* install_requires
* requirements.txt
* install_requires + dependency_links

With (for install_requires):
* bettertutors_sql_models==dev
* bettertutors_sql_models

For requirements.txt, dependency_links:
* git+https://github.com/bettertutors/sql-models#egg=bettertutors_sql_models
* git+https://github.com/bettertutors/sql-models#egg=bettertutors_sql_models
* https://github.com/bettertutors/sql-models/archive/master.zip#egg=bettertutors_sql_models
* https://github.com/bettertutors/sql-models/archive/master.zip
* https://github.com/bettertutors/sql-models
* https://github.com/bettertutors/sql-models/tarball/master#egg=sql-models

Also asked here: http://stackoverflow.com/q/28540839

At one point I even tried writing my own install_deps function() to be run before setup(): https://gist.github.com/SamuelMarks/45a998a83dd60ddbadbc

But nothing--apart from `cd`ing to my sql-models dir and running `pip install .`--is working for me. I'm using Python 2.7.*, and have experienced identical issues on Windows and Linux (with/without virtualenv).

How am I meant to write in this dependency?