Allow virtual env creation in dir with leading dash

pipenv/core.py

@@ -911,7 +911,6 @@ def do_create_virtualenv(python=None, site_packages=False):
  '-m',
  'pipenv.pew',
  'new',
- project.virtualenv_name,
  '-d',
  '-a',
  project.project_directory,
@@ -929,6 +928,8 @@ def do_create_virtualenv(python=None, site_packages=False):
  err=True,
  )
  cmd = cmd + ['-p', python]
+ if not project.is_venv_in_project():
+ cmd = cmd + ['--', project.virtualenv_name]
  # Actually create the virtualenv.
  with spinner():
  try:

tests/integration/test_pipenv.py

@@ -2,11 +2,20 @@
 
 XXX: Try our best to reduce tests in this file.
 """
+import os
+from tempfile import gettempdir, mkdtemp
+
+import mock
+import pytest
 
 from pipenv.core import activate_virtualenv
 from pipenv.project import Project
 from pipenv.vendor import delegator
-import pytest
+
+try:
+ from pathlib import Path
+except ImportError:
+ from pipenv.vendor.pathlib2 import Path
 
 
 @pytest.mark.code
@@ -92,3 +101,26 @@ def test_proper_names_unamanged_virtualenv(PipenvInstance, pypi):
  assert c.return_code == 0
  project = Project()
  assert project.proper_names == []
+
+
+@pytest.mark.cli
+def test_directory_with_leading_dash(PipenvInstance):
+ def mocked_mkdtemp(suffix, prefix, dir):
+ if suffix == '-project':
+ temp_dir = Path(gettempdir()) / '-dir-with-leading-dash'
+ temp_dir.mkdir()
+ return str(temp_dir)
+ else:
+ return mkdtemp(suffix, prefix, dir)
+
+ with mock.patch('pipenv._compat.mkdtemp', side_effect=mocked_mkdtemp):
+ with PipenvInstance(chdir=True) as p:
+ # This environment variable is set in the context manager and will
+ # cause pipenv to use virtualenv, not pew.
+ del os.environ['PIPENV_VENV_IN_PROJECT']
+ p.pipenv('--python python')
+ venv_path = p.pipenv('--venv').out.strip()
+ assert os.path.isdir(venv_path)
+ # Manually clean up environment, since PipenvInstance assumes that
+ # the virutalenv is in the project directory.
+ p.pipenv('--rm')