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Environment variables in Pipfile does not resolve

See original GitHub issue

When I add a second source in my Pipfile with a private pypi registry, and then try to run pipenv update (or anything else which tries to install from it), I’m getting an error.

I’ve found similar issue, both of which are closed: https://github.com/pypa/pipenv/issues/2351 https://github.com/pypa/pipenv/issues/1906

If I set the username and password as part of the source url directly in the Pipfile it works as expected, also when I create a ~/.netrc file with the machine, login and password.

Expected result

I expect the packages defined in Pipfile to be installed

Actual result

Courtesy Notice: Pipenv found itself running within a virtual environment, so it will automatically use that environment, instead of creating its own for any project. You can set PIPENV_IGNORE_VIRTUALENVS=1 to force pipenv to ignore that environment and create its own instead.
Running $ pipenv lock then $ pipenv sync.
Locking [dev-packages] dependencies…
Using pip: -i https://pypi.python.org/simple --extra-index-url https://${PYPI_AUTH}@pypi.domain.io/pypi

                          ROUND 1                           
Current constraints:

Finding the best candidates:

Finding secondary dependencies:
------------------------------------------------------------
Result of round 1: stable, done

Locking [packages] dependencies…
Using pip: -i https://pypi.python.org/simple --extra-index-url https://${PYPI_AUTH}@pypi.domain.io/pypi

                          ROUND 1                           
Current constraints:
  privatepackage

Finding the best candidates:
User for pypi.domain.io: 
INFO:pip9._vendor.requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): pypi.org
INFO:pip9._vendor.requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): pypi.domain.io
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/pipenv/resolver.py", line 85, in <module>
    main()
  File "/usr/local/lib/python3.6/site-packages/pipenv/resolver.py", line 74, in main
    system=system,
  File "/usr/local/lib/python3.6/site-packages/pipenv/resolver.py", line 65, in resolve
    allow_global=system,
  File "/usr/local/lib/python3.6/site-packages/pipenv/utils.py", line 442, in resolve_deps
    pre,
  File "/usr/local/lib/python3.6/site-packages/pipenv/utils.py", line 352, in actually_resolve_reps
    resolved_tree.update(resolver.resolve(max_rounds=PIPENV_MAX_ROUNDS))
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 102, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 193, in _resolve_one_round
    best_matches = {self.get_best_match(ireq) for ireq in constraints}
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 193, in <setcomp>
    best_matches = {self.get_best_match(ireq) for ireq in constraints}
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/resolver.py", line 257, in get_best_match
    best_match = self.repository.find_best_match(ireq, prereleases=self.prereleases)
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 157, in find_best_match
    all_candidates = self.find_all_candidates(ireq.name)
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 142, in find_all_candidates
    candidates = self.finder.find_all_candidates(req_name)
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/notpip/index.py", line 456, in find_all_candidates
    for page in self._get_pages(url_locations, project_name):
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/notpip/index.py", line 606, in _get_pages
    page = self._get_page(location)
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/notpip/index.py", line 723, in _get_page
    return HTMLPage.get_page(link, session=self.session)
  File "/usr/local/lib/python3.6/site-packages/pipenv/patched/notpip/index.py", line 832, in get_page
    "Cache-Control": "max-age=600",
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/_vendor/requests/sessions.py", line 488, in get
    return self.request('GET', url, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/download.py", line 386, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/_vendor/requests/sessions.py", line 475, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/_vendor/requests/sessions.py", line 602, in send
    r = dispatch_hook('response', hooks, r, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/_vendor/requests/hooks.py", line 31, in dispatch_hook
    _hook_data = hook(hook_data, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/pip9/download.py", line 181, in handle_401
    username = six.moves.input("User for %s: " % parsed.netloc)
EOFError: EOF when reading a line

When possible, provide the verbose output (--verbose), especially for locking and dependencies resolving issues.

Steps to replicate

Pipfile

[[source]]
url = "https://pypi.python.org/simple"
verify_ssl = true
name = "pypi"

[[source]]
url = "https://${PYPI_AUTH}@pypi.domain.io/pypi"
verify_ssl = true
name = "private-pypi"

[packages]
privatepackage = {version = "*", index = "private-pypi"}

[requires]
python_version = "3.6"