How to use a tar.gz as a dep in another project

I managed to build a tar.gz of a module using pygradle, and am now wanting to import it into another project and use it.

My gradle file has the following dependency from the tar.gz created before:

dependencies {
    python 'pypi:requests:2.9.1'
    python 'com.myawesomedomain.pyexample:helloworld:0.0.1' // My module
    test 'pypi:mock:1.3.0'
}

and the setup.py has the following setup portion:

setup(
    distclass=GradleDistribution,
    package_dir={'': 'src'},
    packages=find_packages('src'),
    include_package_data=True,
    entry_points={
        'console_scripts': [
            'import_example = import_example.run:main',
        ]
    }
)

However, when I build, all I get is another build/distributions/import_example-0.0.1.tar.gz which doesn't seem to contain the original helloworld-0.0.1.tar.gz package anywhere.

I do see the helloworld packages in build/venv/lib/python2.7/site-packages/helloworld, but that doesn't help with creating a publishable artifact since venv isn't a package.

Looking at the example projects provided, I get the impression that I was supposed to get a build/deployable artifact which might be what I am missing.

Also, how am I supposed to run this with the entry point? I thought it might be ./activate import_example but that clearly isn't it.

Also when I get the following errors when I try to run ./build/venv/bin/import_example

Traceback (most recent call last):
  File "./build/venv/bin/import_example", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3138, in <module>
    @_call_aside
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3124, in _call_aside
    f(*args, **kwargs)
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3151, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 661, in _build_master
    ws.require(__requires__)
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 962, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/mnt/c/Users/myuser/Documents/dev/pyexample_import/build/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 849, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'helloworld' distribution was not found and is required by import-example

Start with the Gradle dependency block and setup.py, then inspect the generated build/distributions/import_example-0.0.1.tar.gz and build/venv/bin/import_example. Reproduce the build and entry-point invocation, checking why helloworld is absent from the publishable artifact and produces DistributionNotFound. Done means the documented workflow produces a usable artifact and runs the import_example entry point.