Cannot install a pipenv app with a dependency, both hosted on github

I created two small test projects on GitHub to understand how pipenv works. One project is a simple app that uses the other project as dependency. The app project is located here: pipenv-app. The dependency project is located here: pipenv-dependency.

When trying to install the app via $ pipenv install -e git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app --verbose in a virtualenv created via $ pipenv --three, I get this output:

⠋Installing '-e git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app'
$ "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/bin/pip" install  --src /home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/src --verbose   -e "git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app" -i https://pypi.python.org/simple --exists-action w
Obtaining pipenv-app from git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app
  Cloning https://github.com/irgendsontyp/pipenv-app to /home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/src/pipenv-app
  Running command git clone -q https://github.com/irgendsontyp/pipenv-app /home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/src/pipenv-app
  Running setup.py (path:/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/src/pipenv-app/setup.py) egg_info for package pipenv-app
    Running command python setup.py egg_info
    running egg_info
    creating pipenv_app.egg-info
    writing pipenv_app.egg-info/PKG-INFO
    writing dependency_links to pipenv_app.egg-info/dependency_links.txt
    writing requirements to pipenv_app.egg-info/requires.txt
    writing top-level names to pipenv_app.egg-info/top_level.txt
    writing manifest file 'pipenv_app.egg-info/SOURCES.txt'
    reading manifest file 'pipenv_app.egg-info/SOURCES.txt'
    writing manifest file 'pipenv_app.egg-info/SOURCES.txt'
  Source in /home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/src/pipenv-app has version 1.0.0, which satisfies requirement pipenv-app from git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app
Collecting pipenv-dependency (from pipenv-app)
  1 location(s) to search for versions of pipenv-dependency:
  * https://pypi.python.org/simple/pipenv-dependency/
  Getting page https://pypi.python.org/simple/pipenv-dependency/
  Looking up "https://pypi.python.org/simple/pipenv-dependency/" in the cache
  No cache entry available
  Starting new HTTPS connection (1): pypi.python.org
  "GET /simple/pipenv-dependency/ HTTP/1.1" 404 46
  Status code 404 not in [200, 203, 300, 301]
  Could not fetch URL https://pypi.python.org/simple/pipenv-dependency/: 404 Client Error: Not Found (pipenv-dependency does not exist) for url: https://pypi.python.org/simple/pipenv-dependency/ - skipping
Cleaning up...
Exception information:
Traceback (most recent call last):
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/commands/install.py", line 335, in run
    wb.build(autobuilding=True)
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/req/req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/req/req_set.py", line 554, in _prepare_file
    require_hashes
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/req/req_install.py", line 278, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "/home/maxx/.local/share/virtualenvs/pipenv-test-rA_KzhnY/lib/python3.6/site-packages/pip/index.py", line 514, in find_requirement
    'No matching distribution found for %s' % req
pip.exceptions.DistributionNotFound: No matching distribution found for pipenv-dependency (from pipenv-app)

Error:  An error occurred while installing -e git+https://github.com/irgendsontyp/pipenv-app#egg=pipenv-app!
  Could not find a version that satisfies the requirement pipenv-dependency (from pipenv-app) (from versions: )
No matching distribution found for pipenv-dependency (from pipenv-app)

What am I doing wrong?

OS: Arch Linux Python -V: Python 3.6.4 Pipenv --version: pipenv, version 9.0.1

[uranusjr]

@irgendsontyp I believe the “modern” way to install dependency via Git is through PEP 508 URL-based dependency lookup. Remove the dependency_links entry, and change the install_requires entry from

install_requires=[
    'pipenv-app',
],

to

install_requires=[
    'pipenv-app @ git+https://github.com/irgendsontyp/pipenv-app',
],

I’ve never actually used it myself, to be honest, but it should work.

[uranusjr]

Donald Stufft (the main person behind all these packaging stuff) published a great blog post on why the Python ecosystem needs two ways to specify dependencies. It was written a few years ago, so he was describing requirements.txt instead of Pipfile, but the idea is the same. The post also describes why exactly dependency_links is bad practice.

https://caremad.io/posts/2013/07/setup-vs-requirement/