Update virtualenv to 20.13.0

[pyup-bot]

This PR updates virtualenv from 20.0.31 to 20.13.0.

Changelog

20.13.0

~~~~~~~~~~~~~~~~~~
- Fix ``AttributeError: 'bool' object has no attribute 'error'`` when creating a
Python 2.x virtualenv on macOS - by ``moreati``. (`2269 <https://github.com/pypa/virtualenv/issues/2269>`_)
- Fix ``PermissionError: [Errno 1] Operation not permitted`` when creating a
Python 2.x virtualenv on macOS/arm64 - by ``moreati``. (`2271 <https://github.com/pypa/virtualenv/issues/2271>`_)

20.12.1

~~~~~~~~~~~~~~~~~~
- Try using previous updates of ``pip``, ``setuptools`` & ``wheel``
when inside an update grace period rather than always falling back
to embedded wheels - by :user:`mayeut`. (`2265 <https://github.com/pypa/virtualenv/issues/2265>`_)
- New patch versions of ``pip``, ``setuptools`` & ``wheel`` are now
returned in the expected timeframe. - by :user:`mayeut`. (`2266 <https://github.com/pypa/virtualenv/issues/2266>`_)
- Manual upgrades of ``pip``, ``setuptools`` & ``wheel`` are
not discarded by a periodic update - by :user:`mayeut`. (`2267 <https://github.com/pypa/virtualenv/issues/2267>`_)

20.12.0

~~~~~~~~~~~~~~~~~~
- Fix ``--download`` option - by :user:`mayeut`. (`2120 <https://github.com/pypa/virtualenv/issues/2120>`_)
- Ugrade embedded setuptools to ``60.2.0`` from ``60.1.1`` - by :user:`gaborbernat`. (`2263 <https://github.com/pypa/virtualenv/issues/2263>`_)

20.11.2

~~~~~~~~~~~~~~~~~~
- Fix installation of pinned versions of ``pip``, ``setuptools`` & ``wheel`` - by :user:`mayeut`. (`2203 <https://github.com/pypa/virtualenv/issues/2203>`_)

20.11.1

~~~~~~~~~~~~~~~~~~
- Bump embed setuptools to ``60.1.1`` from ``60.1.0`` - by :user:`gaborbernat`. (`2258 <https://github.com/pypa/virtualenv/issues/2258>`_)

20.11.0

~~~~~~~~~~~~~~~~~~
- Avoid deprecation warning from py-filelock argument - by :user:`ofek`. (`2237 <https://github.com/pypa/virtualenv/issues/2237>`_)
- Upgrade embedded setuptools to ``61.1.0`` from ``58.3.0`` - by :user:`gaborbernat`. (`2240 <https://github.com/pypa/virtualenv/issues/2240>`_)
- Drop the runtime dependency of ``backports.entry-points-selectable`` - by :user:`hroncok`. (`2246 <https://github.com/pypa/virtualenv/issues/2246>`_)
- Fish: PATH variables should not be quoted when being set - by :user:`hroncok`. (`2248 <https://github.com/pypa/virtualenv/issues/2248>`_)

20.10.0

~~~~~~~~~~~~~~~~~~
- Fix broken prompt set up by activate.bat - by :user:`SiggyBar`. (`2225 <https://github.com/pypa/virtualenv/issues/2225>`_)

20.9.0

~~~~~~~~~~~~~~~~~
- Fixed path collision that could lead to a PermissionError or writing to system
directories when using PyPy3.8 - by :user:`mgorny`. (`2182 <https://github.com/pypa/virtualenv/issues/2182>`_)
- Upgrade embedded setuptools to ``58.3.0`` from ``58.1.0`` and pip to ``21.3.1`` from ``21.2.4`` - by
:user:`gaborbernat`. (`2205 <https://github.com/pypa/virtualenv/issues/2205>`_)
- Remove stray closing parenthesis in activate.bat - by :user:`SiggyBar`. (`2221 <https://github.com/pypa/virtualenv/issues/2221>`_)

20.8.1

~~~~~~~~~~~~~
- `2189 <https://github.com/pypa/virtualenv/issues/2189>`_

20.8.0

--------------------

* upgrade embedded setuptools to ``58.0.4`` from ``57.4.0`` and pip to ``21.2.4`` from ``21.2.3``
* Add nushell activation script

20.7.2

~~~~~~~~~~~~~~~~~
- Upgrade embedded pip to ``21.2.3`` from ``21.2.2`` and wheel to ``0.37.0`` from ``0.36.2`` - by :user:`gaborbernat`. (`2168 <https://github.com/pypa/virtualenv/issues/2168>`_)

20.7.1

~~~~~~~~~~~~~~~~~
- Fix unpacking dictionary items in PythonInfo.install_path (`2165 <https://github.com/pypa/virtualenv/issues/2165>`_)

20.7.0

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Removed ``xonsh`` activator due to this breaking fairly often the CI and lack of support from those packages
maintainers, upstream is encouraged to continue supporting the project as a
`plugin <https://github.com/xonsh/xonsh/issues/3689>`_  - by :user:`gaborbernat`. (`#2160 <https://github.com/pypa/virtualenv/issues/2160>`_)

20.6.0

~~~~~~~~~~~~~~~~~
- Support Python interpreters without ``distutils`` (fallback to ``syconfig`` in these cases) - by :user:`gaborbernat`. (`1910 <https://github.com/pypa/virtualenv/issues/1910>`_)

20.5.0

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Drop python ``3.4`` support as it has been over 2 years since EOL - by :user:`gaborbernat`. (`2141 <https://github.com/pypa/virtualenv/issues/2141>`_)

20.4.7

~~~~~~~~~~~~~~~~~
- Upgrade embedded pip to ``21.1.2`` and setuptools to ``57.0.0`` - by :user:`gaborbernat`. (`2123 <https://github.com/pypa/virtualenv/issues/2123>`_)

20.4.6

~~~~~~~~~~~~~~~~~
- Fix ``site.getsitepackages()`` broken on python2 on debian - by :user:`freundTech`. (`2105 <https://github.com/pypa/virtualenv/issues/2105>`_)

20.4.5

~~~~~~~~~~~~~~~~~
- Bump pip to ``21.1.1`` from ``21.0.1`` - by :user:`gaborbernat`. (`2104 <https://github.com/pypa/virtualenv/issues/2104>`_)
- Fix ``site.getsitepackages()`` ignoring ``--system-site-packages`` on python2 - by :user:`freundTech`. (`2106 <https://github.com/pypa/virtualenv/issues/2106>`_)

20.4.4

~~~~~~~~~~~~~~~~~
- Built in discovery class is always preferred over plugin supplied classes. (`2087 <https://github.com/pypa/virtualenv/issues/2087>`_)
- Upgrade embeded setuptools to ``56.0.0`` by :user:`gaborbernat`. (`2094 <https://github.com/pypa/virtualenv/issues/2094>`_)

20.4.3

~~~~~~~~~~~~~~~~~
- Bump embeded setuptools from ``52.0.0`` to ``54.1.2`` - by :user:`gaborbernat` (`2069 <https://github.com/pypa/virtualenv/issues/2069>`_)
- Fix PyPy3 stdlib on Windows is incorrect - by :user:`gaborbernat`. (`2071 <https://github.com/pypa/virtualenv/issues/2071>`_)

20.4.2

~~~~~~~~~~~~~~~~~
- Running virtualenv ``--upgrade-embed-wheels`` crashes - by :user:`gaborbernat`. (`2058 <https://github.com/pypa/virtualenv/issues/2058>`_)

20.4.1

~~~~~~~~~~~~~~~~~
- Bump embedded pip and setuptools packages to latest upstream supported (``21.0.1`` and ``52.0.0``) - by :user:`gaborbernat`. (`2060 <https://github.com/pypa/virtualenv/issues/2060>`_)

20.4.0

~~~~~~~~~~~~~~~~~
- Upgrade embedded setuptools to ``51.3.3`` from ``51.1.2`` - by :user:`gaborbernat`. (`2055 <https://github.com/pypa/virtualenv/issues/2055>`_)

20.3.1

~~~~~~~~~~~~~~~~~
- Bump embed pip to ``20.3.3``, setuptools to ``51.1.1`` and wheel to ``0.36.2`` - by :user:`gaborbernat`. (`2036 <https://github.com/pypa/virtualenv/issues/2036>`_)
- Allow unfunctioning of pydoc to fail freely so that virtualenvs can be
activated under Zsh with set -e (since otherwise ``unset -f`` and
``unfunction`` exit with 1 if the function does not exist in Zsh) - by
:user:`d125q`. (`2049 <https://github.com/pypa/virtualenv/issues/2049>`_)
- Drop cached python information if the system executable is no longer present (for example when the executable is a
shim and the mapped executable is replaced - such is the case with pyenv) - by :user:`gaborbernat`. (`2050 <https://github.com/pypa/virtualenv/issues/2050>`_)

20.3.0

~~~~~~~~~~~~~~~~~
- On Windows python ``3.7+`` distributions where the exe shim is missing fallback to the old ways - by :user:`gaborbernat`. (`1986 <https://github.com/pypa/virtualenv/issues/1986>`_)
- When discovering interpreters on Windows, via the PEP-514, prefer ``PythonCore`` releases over other ones. virtualenv
is used via pip mostly by this distribution, so prefer it over other such as conda - by :user:`gaborbernat`. (`2046 <https://github.com/pypa/virtualenv/issues/2046>`_)

20.2.2

~~~~~~~~~~~~~~~~~
- Bump pip to ``20.3.1``, setuptools to ``51.0.0`` and wheel to ``0.36.1`` - by :user:`gaborbernat`. (`2029 <https://github.com/pypa/virtualenv/issues/2029>`_)

20.2.1

--------------------

No significant changes.

20.2.0

~~~~~~~~~~~~~~~~~
- Fix processing of the ``VIRTUALENV_PYTHON`` environment variable and make it
multi-value as well (separated by comma) - by :user:`pneff`. (`1998 <https://github.com/pypa/virtualenv/issues/1998>`_)

20.1.0

~~~~~~~~~~~~~~~~~
- The python specification can now take one or more values, first found is used to create the virtual environment - by
:user:`gaborbernat`. (`1995 <https://github.com/pypa/virtualenv/issues/1995>`_)

20.0.35

~~~~~~~~~~~~~~~~~~
- Bump embedded setuptools from ``50.3.0`` to ``50.3.1`` - by :user:`gaborbernat`. (`1982 <https://github.com/pypa/virtualenv/issues/1982>`_)
- After importing virtualenv passing cwd to a subprocess calls breaks with ``invalid directory`` - by :user:`gaborbernat`. (`1983 <https://github.com/pypa/virtualenv/issues/1983>`_)

20.0.34

~~~~~~~~~~~~~~~~~~
- Align with venv module when creating virtual environments with builtin creator on Windows 3.7 and later
- by :user:`gaborbernat`. (`1782 <https://github.com/pypa/virtualenv/issues/1782>`_)
- Handle Cygwin path conversion in the activation script - by :user:`davidcoghlan`. (`1969 <https://github.com/pypa/virtualenv/issues/1969>`_)

20.0.33

~~~~~~~~~~~~~~~~~~
- Fix ``None`` type error in cygwin if POSIX path in dest - by :user:`danyeaw`. (`1962 <https://github.com/pypa/virtualenv/issues/1962>`_)
- Fix Python 3.4 incompatibilities (added back to the CI) - by :user:`gaborbernat`. (`1963 <https://github.com/pypa/virtualenv/issues/1963>`_)

20.0.32

~~~~~~~~~~~~~~~~~~
- For activation scripts always use UNIX line endings (unless it's BATCH shell related) - by :user:`saytosid`. (`1818 <https://github.com/pypa/virtualenv/issues/1818>`_)
- Upgrade embedded pip to ``20.2.1`` and setuptools to ``49.4.0`` - by :user:`gaborbernat`. (`1918 <https://github.com/pypa/virtualenv/issues/1918>`_)
- Avoid spawning new windows when doing seed package upgrades in the background on Windows - by :user:`gaborbernat`. (`1928 <https://github.com/pypa/virtualenv/issues/1928>`_)
- Fix a bug that reading and writing on the same file may cause race on multiple processes. (`1938 <https://github.com/pypa/virtualenv/issues/1938>`_)
- Upgrade embedded setuptools to ``50.2.0`` and pip to ``20.2.3`` - by :user:`gaborbernat`. (`1939 <https://github.com/pypa/virtualenv/issues/1939>`_)
- Provide correct path for bash activator in cygwin or msys2 - by :user:`danyeaw`. (`1940 <https://github.com/pypa/virtualenv/issues/1940>`_)
- Relax importlib requirement to allow version<3 - by :user:`usamasadiq` (`1953 <https://github.com/pypa/virtualenv/issues/1953>`_)
- pth files were not processed on CPython2 if $PYTHONPATH was pointing to site-packages/ - by :user:`navytux`. (`1959 <https://github.com/pypa/virtualenv/issues/1959>`_) (`#1960 <https://github.com/pypa/virtualenv/issues/1960>`_)

Links

• PyPI: https://pypi.org/project/virtualenv
• Changelog: https://pyup.io/changelogs/virtualenv/
• Homepage: https://virtualenv.pypa.io/