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pip download does not clean up new resolver's backtracking artifacts #8827

Closed
McSinyx opened this issue Aug 31, 2020 · 2 comments · Fixed by #8843
Closed

pip download does not clean up new resolver's backtracking artifacts #8827

McSinyx opened this issue Aug 31, 2020 · 2 comments · Fixed by #8843
Labels
C: download About fetching data from PyPI and other sources type: bug A confirmed bug or unintended behavior

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@McSinyx
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McSinyx commented Aug 31, 2020

Environment

  • pip version: 0b18e21
  • Python version: 3.8.5
  • OS: Debian testing

Description

IIUC pip download is supposed to prepare a directory with distributions to be installed from the resolved requirements. However, due to implementation details, distributions are saved to the target directory as they are downloaded/prepared for dependency resolution:

if download_dir:
if link.is_existing_dir():
logger.info('Link is a directory, ignoring download_dir')
elif local_file:
download_location = os.path.join(
download_dir, link.filename
)
if not os.path.exists(download_location):
shutil.copy(local_file.path, download_location)
download_path = display_path(download_location)
logger.info('Saved %s', download_path)

Expected behavior

The destination directory should only be left with distributions necessary distribution for installation. This way, when pip install is called on this directory, no resolution would be needed.

How to Reproduce

$ pip ---use-feature=2020-resolver download oslo-utils==1.4.0
Collecting oslo-utils==1.4.0
  Downloading oslo.utils-1.4.0-py2.py3-none-any.whl (55 kB)
     |████████████████████████████████| 55 kB 616 kB/s 
  Saved ./oslo.utils-1.4.0-py2.py3-none-any.whl
Collecting iso8601>=0.1.9
  Using cached iso8601-0.1.12-py3-none-any.whl (12 kB)
  Saved ./iso8601-0.1.12-py3-none-any.whl
Collecting netifaces>=0.10.4
  Using cached netifaces-0.10.9.tar.gz (28 kB)
  Saved ./netifaces-0.10.9.tar.gz
Collecting six>=1.9.0
  Using cached six-1.15.0-py2.py3-none-any.whl (10 kB)
  Saved ./six-1.15.0-py2.py3-none-any.whl
Collecting netaddr>=0.7.12
  Using cached netaddr-0.8.0-py2.py3-none-any.whl (1.9 MB)
  Saved ./netaddr-0.8.0-py2.py3-none-any.whl
Collecting pbr!=0.7,<1.0,>=0.6
  Downloading pbr-0.11.1-py2.py3-none-any.whl (79 kB)
     |████████████████████████████████| 79 kB 609 kB/s 
  Saved ./pbr-0.11.1-py2.py3-none-any.whl
Collecting Babel>=1.3
  Using cached Babel-2.8.0-py2.py3-none-any.whl (8.6 MB)
  Saved ./Babel-2.8.0-py2.py3-none-any.whl
Collecting pytz>=2015.7
  Using cached pytz-2020.1-py2.py3-none-any.whl (510 kB)
  Saved ./pytz-2020.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-5.0.0-py3-none-any.whl (46 kB)
  Saved ./oslo.i18n-5.0.0-py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-4.0.1-py3-none-any.whl (47 kB)
  Saved ./oslo.i18n-4.0.1-py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-4.0.0-py3-none-any.whl (47 kB)
  Saved ./oslo.i18n-4.0.0-py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.25.1-py2.py3-none-any.whl (47 kB)
  Saved ./oslo.i18n-3.25.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.25.0-py2.py3-none-any.whl (47 kB)
  Saved ./oslo.i18n-3.25.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.24.0-py2.py3-none-any.whl (46 kB)
  Saved ./oslo.i18n-3.24.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.23.1-py2.py3-none-any.whl (46 kB)
  Saved ./oslo.i18n-3.23.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.23.0-py2.py3-none-any.whl (46 kB)
  Saved ./oslo.i18n-3.23.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.22.1-py2.py3-none-any.whl (40 kB)
  Saved ./oslo.i18n-3.22.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.22.0-py2.py3-none-any.whl (40 kB)
  Saved ./oslo.i18n-3.22.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.21.0-py2.py3-none-any.whl (40 kB)
  Saved ./oslo.i18n-3.21.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.20.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.20.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.19.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.19.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.18.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.18.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.17.2-py2.py3-none-any.whl (45 kB)
  Saved ./oslo.i18n-3.17.2-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.17.1-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.17.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.17.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.17.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.16.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.16.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.15.3-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.15.3-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.15.2-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.15.2-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.15.1-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.15.1-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.15.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.15.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.14.0-py2.py3-none-any.whl (42 kB)
  Saved ./oslo.i18n-3.14.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.13.0-py2.py3-none-any.whl (41 kB)
  Saved ./oslo.i18n-3.13.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Using cached oslo.i18n-3.12.0-py2.py3-none-any.whl (41 kB)
  Saved ./oslo.i18n-3.12.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.11.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 495 kB/s 
  Saved ./oslo.i18n-3.11.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.10.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 988 kB/s 
  Saved ./oslo.i18n-3.10.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.9.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 981 kB/s 
  Saved ./oslo.i18n-3.9.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.8.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 931 kB/s 
  Saved ./oslo.i18n-3.8.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.7.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 962 kB/s 
  Saved ./oslo.i18n-3.7.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.6.0-py2.py3-none-any.whl (42 kB)
     |████████████████████████████████| 42 kB 1.4 MB/s 
  Saved ./oslo.i18n-3.6.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.5.0-py2.py3-none-any.whl (42 kB)
     |████████████████████████████████| 42 kB 944 kB/s 
  Saved ./oslo.i18n-3.5.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.4.0-py2.py3-none-any.whl (42 kB)
     |████████████████████████████████| 42 kB 1.5 MB/s 
  Saved ./oslo.i18n-3.4.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.3.0-py2.py3-none-any.whl (41 kB)
     |████████████████████████████████| 41 kB 784 kB/s 
  Saved ./oslo.i18n-3.3.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.2.0-py2.py3-none-any.whl (34 kB)
  Saved ./oslo.i18n-3.2.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.1.0-py2.py3-none-any.whl (34 kB)
  Saved ./oslo.i18n-3.1.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-3.0.0-py2.py3-none-any.whl (34 kB)
  Saved ./oslo.i18n-3.0.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.7.0-py2.py3-none-any.whl (34 kB)
  Saved ./oslo.i18n-2.7.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.6.0-py2.py3-none-any.whl (33 kB)
  Saved ./oslo.i18n-2.6.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.5.0-py2.py3-none-any.whl (33 kB)
  Saved ./oslo.i18n-2.5.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.4.0-py2.py3-none-any.whl (33 kB)
  Saved ./oslo.i18n-2.4.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.3.0-py2.py3-none-any.whl (32 kB)
  Saved ./oslo.i18n-2.3.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.2.0-py2.py3-none-any.whl (32 kB)
  Saved ./oslo.i18n-2.2.0-py2.py3-none-any.whl
Collecting oslo.i18n>=1.3.0
  Downloading oslo.i18n-2.1.0-py2.py3-none-any.whl (32 kB)
  Saved ./oslo.i18n-2.1.0-py2.py3-none-any.whl
Collecting pip
  Using cached pip-20.2.2-py2.py3-none-any.whl (1.5 MB)
  Saved ./pip-20.2.2-py2.py3-none-any.whl
Successfully downloaded oslo-utils iso8601 netifaces six netaddr pbr Babel pytz oslo.i18n pip
$ ls
Babel-2.8.0-py2.py3-none-any.whl       oslo.i18n-3.19.0-py2.py3-none-any.whl
iso8601-0.1.12-py3-none-any.whl        oslo.i18n-3.20.0-py2.py3-none-any.whl
netaddr-0.8.0-py2.py3-none-any.whl     oslo.i18n-3.2.0-py2.py3-none-any.whl
netifaces-0.10.9.tar.gz                oslo.i18n-3.21.0-py2.py3-none-any.whl
oslo.i18n-2.1.0-py2.py3-none-any.whl   oslo.i18n-3.22.0-py2.py3-none-any.whl
oslo.i18n-2.2.0-py2.py3-none-any.whl   oslo.i18n-3.22.1-py2.py3-none-any.whl
oslo.i18n-2.3.0-py2.py3-none-any.whl   oslo.i18n-3.23.0-py2.py3-none-any.whl
oslo.i18n-2.4.0-py2.py3-none-any.whl   oslo.i18n-3.23.1-py2.py3-none-any.whl
oslo.i18n-2.5.0-py2.py3-none-any.whl   oslo.i18n-3.24.0-py2.py3-none-any.whl
oslo.i18n-2.6.0-py2.py3-none-any.whl   oslo.i18n-3.25.0-py2.py3-none-any.whl
oslo.i18n-2.7.0-py2.py3-none-any.whl   oslo.i18n-3.25.1-py2.py3-none-any.whl
oslo.i18n-3.0.0-py2.py3-none-any.whl   oslo.i18n-3.3.0-py2.py3-none-any.whl
oslo.i18n-3.10.0-py2.py3-none-any.whl  oslo.i18n-3.4.0-py2.py3-none-any.whl
oslo.i18n-3.1.0-py2.py3-none-any.whl   oslo.i18n-3.5.0-py2.py3-none-any.whl
oslo.i18n-3.11.0-py2.py3-none-any.whl  oslo.i18n-3.6.0-py2.py3-none-any.whl
oslo.i18n-3.12.0-py2.py3-none-any.whl  oslo.i18n-3.7.0-py2.py3-none-any.whl
oslo.i18n-3.13.0-py2.py3-none-any.whl  oslo.i18n-3.8.0-py2.py3-none-any.whl
oslo.i18n-3.14.0-py2.py3-none-any.whl  oslo.i18n-3.9.0-py2.py3-none-any.whl
oslo.i18n-3.15.0-py2.py3-none-any.whl  oslo.i18n-4.0.0-py3-none-any.whl
oslo.i18n-3.15.1-py2.py3-none-any.whl  oslo.i18n-4.0.1-py3-none-any.whl
oslo.i18n-3.15.2-py2.py3-none-any.whl  oslo.i18n-5.0.0-py3-none-any.whl
oslo.i18n-3.15.3-py2.py3-none-any.whl  oslo.utils-1.4.0-py2.py3-none-any.whl
oslo.i18n-3.16.0-py2.py3-none-any.whl  pbr-0.11.1-py2.py3-none-any.whl
oslo.i18n-3.17.0-py2.py3-none-any.whl  pip-20.2.2-py2.py3-none-any.whl
oslo.i18n-3.17.1-py2.py3-none-any.whl  pytz-2020.1-py2.py3-none-any.whl
oslo.i18n-3.17.2-py2.py3-none-any.whl  six-1.15.0-py2.py3-none-any.whl
oslo.i18n-3.18.0-py2.py3-none-any.whl
@pradyunsg pradyunsg added C: new resolver type: bug A confirmed bug or unintended behavior C: download About fetching data from PyPI and other sources labels Sep 2, 2020
@pradyunsg pradyunsg self-assigned this Sep 2, 2020
@pradyunsg pradyunsg removed their assignment Sep 4, 2020
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@pradyunsg per our chat today you'd like to review this.

bors bot referenced this issue in duckinator/emanate Dec 1, 2020
195: Update pip to 20.3 r=duckinator a=pyup-bot


This PR updates [pip](https://pypi.org/project/pip) from **20.2.4** to **20.3**.



<details>
  <summary>Changelog</summary>
  
  
   ### 20.3
   ```
   - Introduce a new ResolutionImpossible error, raised when pip encounters un-satisfiable dependency conflicts (`8546 &lt;https://github.com/pypa/pip/issues/8546&gt;`_, `8377 &lt;https://github.com/pypa/pip/issues/8377&gt;`_)
- Add a subcommand ``debug`` to ``pip config`` to list available configuration sources and the key-value pairs defined in them. (`6741 &lt;https://github.com/pypa/pip/issues/6741&gt;`_)
- Warn if index pages have unexpected content-type (`6754 &lt;https://github.com/pypa/pip/issues/6754&gt;`_)
- Allow specifying ``--prefer-binary`` option in a requirements file (`7693 &lt;https://github.com/pypa/pip/issues/7693&gt;`_)
- Generate PEP 376 REQUESTED metadata for user supplied requirements installed
  by pip. (`7811 &lt;https://github.com/pypa/pip/issues/7811&gt;`_)
- Warn if package url is a vcs or an archive url with invalid scheme (`8128 &lt;https://github.com/pypa/pip/issues/8128&gt;`_)
- Parallelize network operations in ``pip list``. (`8504 &lt;https://github.com/pypa/pip/issues/8504&gt;`_)
- Allow the new resolver to obtain dependency information through wheels
  lazily downloaded using HTTP range requests.  To enable this feature,
  invoke ``pip`` with ``--use-feature=fast-deps``. (`8588 &lt;https://github.com/pypa/pip/issues/8588&gt;`_)
- Support ``--use-feature`` in requirements files (`8601 &lt;https://github.com/pypa/pip/issues/8601&gt;`_)

Bug Fixes
---------

- Use canonical package names while looking up already installed packages. (`5021 &lt;https://github.com/pypa/pip/issues/5021&gt;`_)
- Fix normalizing path on Windows when installing package on another logical disk. (`7625 &lt;https://github.com/pypa/pip/issues/7625&gt;`_)
- The VCS commands run by pip as subprocesses don&#39;t merge stdout and stderr anymore, improving the output parsing by subsequent commands. (`7968 &lt;https://github.com/pypa/pip/issues/7968&gt;`_)
- Correctly treat non-ASCII entry point declarations in wheels so they can be
  installed on Windows. (`8342 &lt;https://github.com/pypa/pip/issues/8342&gt;`_)
- Update author email in config and tests to reflect decommissioning of pypa-dev list. (`8454 &lt;https://github.com/pypa/pip/issues/8454&gt;`_)
- Headers provided by wheels in .data directories are now correctly installed
  into the user-provided locations, such as ``--prefix``, instead of the virtual
  environment pip is running in. (`8521 &lt;https://github.com/pypa/pip/issues/8521&gt;`_)

Vendored Libraries
------------------

- Vendored htmlib5 no longer imports deprecated xml.etree.cElementTree on Python 3.
- Upgrade appdirs to 1.4.4
- Upgrade certifi to 2020.6.20
- Upgrade distlib to 0.3.1
- Upgrade html5lib to 1.1
- Upgrade idna to 2.10
- Upgrade packaging to 20.4
- Upgrade requests to 2.24.0
- Upgrade six to 1.15.0
- Upgrade toml to 0.10.1
- Upgrade urllib3 to 1.25.9

Improved Documentation
----------------------

- Add ``--no-input`` option to pip docs (`7688 &lt;https://github.com/pypa/pip/issues/7688&gt;`_)
- List of options supported in requirements file are extracted from source of truth,
  instead of being maintained manually. (`7908 &lt;https://github.com/pypa/pip/issues/7908&gt;`_)
- Fix pip config docstring so that the subcommands render correctly in the docs (`8072 &lt;https://github.com/pypa/pip/issues/8072&gt;`_)
- replace links to the old pypa-dev mailing list with https://mail.python.org/mailman3/lists/distutils-sig.python.org/ (`8353 &lt;https://github.com/pypa/pip/issues/8353&gt;`_)
- Fix example for defining multiple values for options which support them (`8373 &lt;https://github.com/pypa/pip/issues/8373&gt;`_)
- Add documentation for the ResolutionImpossible error that helps the user fix dependency conflicts (`8459 &lt;https://github.com/pypa/pip/issues/8459&gt;`_)
- Add feature flags to docs (`8512 &lt;https://github.com/pypa/pip/issues/8512&gt;`_)
- Document how to install package extras from git branch and source distributions. (`8576 &lt;https://github.com/pypa/pip/issues/8576&gt;`_)
   ```
   
  
  
   ### 20.3b1
   ```
   ===================

Deprecations and Removals
-------------------------

- ``pip freeze`` will stop filtering the ``pip``, ``setuptools``, ``distribute`` and ``wheel`` packages from ``pip freeze`` output in a future version.
  To keep the previous behavior, users should use the new ``--exclude`` option. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Deprecate support for Python 3.5 (`8181 &lt;https://github.com/pypa/pip/issues/8181&gt;`_)
- Document that certain removals can be fast tracked. (`8417 &lt;https://github.com/pypa/pip/issues/8417&gt;`_)
- Document that Python versions are generally supported until PyPI usage falls below 5%. (`8927 &lt;https://github.com/pypa/pip/issues/8927&gt;`_)
- Deprecate ``--find-links`` option in ``pip freeze`` (`9069 &lt;https://github.com/pypa/pip/issues/9069&gt;`_)

Features
--------

- Add ``--exclude`` option to ``pip freeze`` and ``pip list`` commands to explicitly exclude packages from the output. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Allow multiple values for --abi and --platform. (`6121 &lt;https://github.com/pypa/pip/issues/6121&gt;`_)
- Add option ``--format`` to subcommand ``list`` of ``pip  cache``, with ``abspath`` choice to output the full path of a wheel file. (`8355 &lt;https://github.com/pypa/pip/issues/8355&gt;`_)
- Improve error message friendliness when an environment has packages with
  corrupted metadata. (`8676 &lt;https://github.com/pypa/pip/issues/8676&gt;`_)
- Make the ``setup.py install`` deprecation warning less noisy. We warn only
  when ``setup.py install`` succeeded and ``setup.py bdist_wheel`` failed, as
  situations where both fails are most probably irrelevant to this deprecation. (`8752 &lt;https://github.com/pypa/pip/issues/8752&gt;`_)
- Check the download directory for existing wheels to possibly avoid
  fetching metadata when the ``fast-deps`` feature is used with
  ``pip wheel`` and ``pip download``. (`8804 &lt;https://github.com/pypa/pip/issues/8804&gt;`_)
- When installing a git URL that refers to a commit that is not available locally
  after git clone, attempt to fetch it from the remote. (`8815 &lt;https://github.com/pypa/pip/issues/8815&gt;`_)
- Include http subdirectory in ``pip cache info`` and ``pip cache purge`` commands. (`8892 &lt;https://github.com/pypa/pip/issues/8892&gt;`_)
- Cache package listings on index packages so they are guarenteed to stay stable
  during a pip command session. This also improves performance when a index page
  is accessed multiple times during the command session. (`8905 &lt;https://github.com/pypa/pip/issues/8905&gt;`_)
- New resolver: Tweak resolution logic to improve user experience when
  user-supplied requirements conflict. (`8924 &lt;https://github.com/pypa/pip/issues/8924&gt;`_)
- Support Python 3.9. (`8971 &lt;https://github.com/pypa/pip/issues/8971&gt;`_)
- Log an informational message when backtracking takes multiple rounds on a specific package. (`8975 &lt;https://github.com/pypa/pip/issues/8975&gt;`_)
- Switch to the new dependency resolver by default. (`9019 &lt;https://github.com/pypa/pip/issues/9019&gt;`_)
- Remove the ``--build-dir`` option, as per the deprecation. (`9049 &lt;https://github.com/pypa/pip/issues/9049&gt;`_)

Bug Fixes
---------

- Propagate ``--extra-index-url`` from requirements file properly to session auth,
  so that keyring auth will work as expected. (`8103 &lt;https://github.com/pypa/pip/issues/8103&gt;`_)
- Allow specifying verbosity and quiet level via configuration files
  and environment variables. Previously these options were treated as
  boolean values when read from there while through CLI the level can be
  specified. (`8578 &lt;https://github.com/pypa/pip/issues/8578&gt;`_)
- Only converts Windows path to unicode on Python 2 to avoid regressions when a
  POSIX environment does not configure the file system encoding correctly. (`8658 &lt;https://github.com/pypa/pip/issues/8658&gt;`_)
- List downloaded distributions before exiting ``pip download``
  when using the new resolver to make the behavior the same as
  that on the legacy resolver. (`8696 &lt;https://github.com/pypa/pip/issues/8696&gt;`_)
- New resolver: Pick up hash declarations in constraints files and use them to
  filter available distributions. (`8792 &lt;https://github.com/pypa/pip/issues/8792&gt;`_)
- Avoid polluting the destination directory by resolution artifacts
  when the new resolver is used for ``pip download`` or ``pip wheel``. (`8827 &lt;https://github.com/pypa/pip/issues/8827&gt;`_)
- New resolver: If a package appears multiple times in user specification with
  different ``--hash`` options, only hashes that present in all specifications
  should be allowed. (`8839 &lt;https://github.com/pypa/pip/issues/8839&gt;`_)
- Tweak the output during dependency resolution in the new resolver. (`8861 &lt;https://github.com/pypa/pip/issues/8861&gt;`_)
- Correctly search for installed distributions in new resolver logic in order
  to not miss packages (virtualenv packages from system-wide-packages for example) (`8963 &lt;https://github.com/pypa/pip/issues/8963&gt;`_)
- Do not fail in pip freeze when encountering a ``direct_url.json`` metadata file
  with editable=True. Render it as a non-editable ``file://`` URL until modern
  editable installs are standardized and supported. (`8996 &lt;https://github.com/pypa/pip/issues/8996&gt;`_)

Vendored Libraries
------------------

- Fix devendoring instructions to explicitly state that ``vendor.txt`` should not be removed.
  It is mandatory for ``pip debug`` command.

Improved Documentation
----------------------

- Add documentation for &#39;.netrc&#39; support. (`7231 &lt;https://github.com/pypa/pip/issues/7231&gt;`_)
- Add OS tabs for OS-specific commands. (`7311 &lt;https://github.com/pypa/pip/issues/7311&gt;`_)
- Add note and example on keyring support for index basic-auth (`8636 &lt;https://github.com/pypa/pip/issues/8636&gt;`_)
- Added initial UX feedback widgets to docs. (`8783 &lt;https://github.com/pypa/pip/issues/8783&gt;`_, `8848 &lt;https://github.com/pypa/pip/issues/8848&gt;`_)
- Add ux documentation (`8807 &lt;https://github.com/pypa/pip/issues/8807&gt;`_)
- Update user docs to reflect new resolver as default in 20.3. (`9044 &lt;https://github.com/pypa/pip/issues/9044&gt;`_)
- Improve migration guide to reflect changes in new resolver behavior. (`9056 &lt;https://github.com/pypa/pip/issues/9056&gt;`_)
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pip
  - Changelog: https://pyup.io/changelogs/pip/
  - Homepage: https://pip.pypa.io/
</details>



Co-authored-by: pyup-bot <[email protected]>
bors bot referenced this issue in duckinator/emanate Dec 1, 2020
195: Update pip to 20.3 r=duckinator a=pyup-bot


This PR updates [pip](https://pypi.org/project/pip) from **20.2.4** to **20.3**.



<details>
  <summary>Changelog</summary>
  
  
   ### 20.3
   ```
   - Introduce a new ResolutionImpossible error, raised when pip encounters un-satisfiable dependency conflicts (`8546 &lt;https://github.com/pypa/pip/issues/8546&gt;`_, `8377 &lt;https://github.com/pypa/pip/issues/8377&gt;`_)
- Add a subcommand ``debug`` to ``pip config`` to list available configuration sources and the key-value pairs defined in them. (`6741 &lt;https://github.com/pypa/pip/issues/6741&gt;`_)
- Warn if index pages have unexpected content-type (`6754 &lt;https://github.com/pypa/pip/issues/6754&gt;`_)
- Allow specifying ``--prefer-binary`` option in a requirements file (`7693 &lt;https://github.com/pypa/pip/issues/7693&gt;`_)
- Generate PEP 376 REQUESTED metadata for user supplied requirements installed
  by pip. (`7811 &lt;https://github.com/pypa/pip/issues/7811&gt;`_)
- Warn if package url is a vcs or an archive url with invalid scheme (`8128 &lt;https://github.com/pypa/pip/issues/8128&gt;`_)
- Parallelize network operations in ``pip list``. (`8504 &lt;https://github.com/pypa/pip/issues/8504&gt;`_)
- Allow the new resolver to obtain dependency information through wheels
  lazily downloaded using HTTP range requests.  To enable this feature,
  invoke ``pip`` with ``--use-feature=fast-deps``. (`8588 &lt;https://github.com/pypa/pip/issues/8588&gt;`_)
- Support ``--use-feature`` in requirements files (`8601 &lt;https://github.com/pypa/pip/issues/8601&gt;`_)

Bug Fixes
---------

- Use canonical package names while looking up already installed packages. (`5021 &lt;https://github.com/pypa/pip/issues/5021&gt;`_)
- Fix normalizing path on Windows when installing package on another logical disk. (`7625 &lt;https://github.com/pypa/pip/issues/7625&gt;`_)
- The VCS commands run by pip as subprocesses don&#39;t merge stdout and stderr anymore, improving the output parsing by subsequent commands. (`7968 &lt;https://github.com/pypa/pip/issues/7968&gt;`_)
- Correctly treat non-ASCII entry point declarations in wheels so they can be
  installed on Windows. (`8342 &lt;https://github.com/pypa/pip/issues/8342&gt;`_)
- Update author email in config and tests to reflect decommissioning of pypa-dev list. (`8454 &lt;https://github.com/pypa/pip/issues/8454&gt;`_)
- Headers provided by wheels in .data directories are now correctly installed
  into the user-provided locations, such as ``--prefix``, instead of the virtual
  environment pip is running in. (`8521 &lt;https://github.com/pypa/pip/issues/8521&gt;`_)

Vendored Libraries
------------------

- Vendored htmlib5 no longer imports deprecated xml.etree.cElementTree on Python 3.
- Upgrade appdirs to 1.4.4
- Upgrade certifi to 2020.6.20
- Upgrade distlib to 0.3.1
- Upgrade html5lib to 1.1
- Upgrade idna to 2.10
- Upgrade packaging to 20.4
- Upgrade requests to 2.24.0
- Upgrade six to 1.15.0
- Upgrade toml to 0.10.1
- Upgrade urllib3 to 1.25.9

Improved Documentation
----------------------

- Add ``--no-input`` option to pip docs (`7688 &lt;https://github.com/pypa/pip/issues/7688&gt;`_)
- List of options supported in requirements file are extracted from source of truth,
  instead of being maintained manually. (`7908 &lt;https://github.com/pypa/pip/issues/7908&gt;`_)
- Fix pip config docstring so that the subcommands render correctly in the docs (`8072 &lt;https://github.com/pypa/pip/issues/8072&gt;`_)
- replace links to the old pypa-dev mailing list with https://mail.python.org/mailman3/lists/distutils-sig.python.org/ (`8353 &lt;https://github.com/pypa/pip/issues/8353&gt;`_)
- Fix example for defining multiple values for options which support them (`8373 &lt;https://github.com/pypa/pip/issues/8373&gt;`_)
- Add documentation for the ResolutionImpossible error that helps the user fix dependency conflicts (`8459 &lt;https://github.com/pypa/pip/issues/8459&gt;`_)
- Add feature flags to docs (`8512 &lt;https://github.com/pypa/pip/issues/8512&gt;`_)
- Document how to install package extras from git branch and source distributions. (`8576 &lt;https://github.com/pypa/pip/issues/8576&gt;`_)
   ```
   
  
  
   ### 20.3b1
   ```
   ===================

Deprecations and Removals
-------------------------

- ``pip freeze`` will stop filtering the ``pip``, ``setuptools``, ``distribute`` and ``wheel`` packages from ``pip freeze`` output in a future version.
  To keep the previous behavior, users should use the new ``--exclude`` option. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Deprecate support for Python 3.5 (`8181 &lt;https://github.com/pypa/pip/issues/8181&gt;`_)
- Document that certain removals can be fast tracked. (`8417 &lt;https://github.com/pypa/pip/issues/8417&gt;`_)
- Document that Python versions are generally supported until PyPI usage falls below 5%. (`8927 &lt;https://github.com/pypa/pip/issues/8927&gt;`_)
- Deprecate ``--find-links`` option in ``pip freeze`` (`9069 &lt;https://github.com/pypa/pip/issues/9069&gt;`_)

Features
--------

- Add ``--exclude`` option to ``pip freeze`` and ``pip list`` commands to explicitly exclude packages from the output. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Allow multiple values for --abi and --platform. (`6121 &lt;https://github.com/pypa/pip/issues/6121&gt;`_)
- Add option ``--format`` to subcommand ``list`` of ``pip  cache``, with ``abspath`` choice to output the full path of a wheel file. (`8355 &lt;https://github.com/pypa/pip/issues/8355&gt;`_)
- Improve error message friendliness when an environment has packages with
  corrupted metadata. (`8676 &lt;https://github.com/pypa/pip/issues/8676&gt;`_)
- Make the ``setup.py install`` deprecation warning less noisy. We warn only
  when ``setup.py install`` succeeded and ``setup.py bdist_wheel`` failed, as
  situations where both fails are most probably irrelevant to this deprecation. (`8752 &lt;https://github.com/pypa/pip/issues/8752&gt;`_)
- Check the download directory for existing wheels to possibly avoid
  fetching metadata when the ``fast-deps`` feature is used with
  ``pip wheel`` and ``pip download``. (`8804 &lt;https://github.com/pypa/pip/issues/8804&gt;`_)
- When installing a git URL that refers to a commit that is not available locally
  after git clone, attempt to fetch it from the remote. (`8815 &lt;https://github.com/pypa/pip/issues/8815&gt;`_)
- Include http subdirectory in ``pip cache info`` and ``pip cache purge`` commands. (`8892 &lt;https://github.com/pypa/pip/issues/8892&gt;`_)
- Cache package listings on index packages so they are guarenteed to stay stable
  during a pip command session. This also improves performance when a index page
  is accessed multiple times during the command session. (`8905 &lt;https://github.com/pypa/pip/issues/8905&gt;`_)
- New resolver: Tweak resolution logic to improve user experience when
  user-supplied requirements conflict. (`8924 &lt;https://github.com/pypa/pip/issues/8924&gt;`_)
- Support Python 3.9. (`8971 &lt;https://github.com/pypa/pip/issues/8971&gt;`_)
- Log an informational message when backtracking takes multiple rounds on a specific package. (`8975 &lt;https://github.com/pypa/pip/issues/8975&gt;`_)
- Switch to the new dependency resolver by default. (`9019 &lt;https://github.com/pypa/pip/issues/9019&gt;`_)
- Remove the ``--build-dir`` option, as per the deprecation. (`9049 &lt;https://github.com/pypa/pip/issues/9049&gt;`_)

Bug Fixes
---------

- Propagate ``--extra-index-url`` from requirements file properly to session auth,
  so that keyring auth will work as expected. (`8103 &lt;https://github.com/pypa/pip/issues/8103&gt;`_)
- Allow specifying verbosity and quiet level via configuration files
  and environment variables. Previously these options were treated as
  boolean values when read from there while through CLI the level can be
  specified. (`8578 &lt;https://github.com/pypa/pip/issues/8578&gt;`_)
- Only converts Windows path to unicode on Python 2 to avoid regressions when a
  POSIX environment does not configure the file system encoding correctly. (`8658 &lt;https://github.com/pypa/pip/issues/8658&gt;`_)
- List downloaded distributions before exiting ``pip download``
  when using the new resolver to make the behavior the same as
  that on the legacy resolver. (`8696 &lt;https://github.com/pypa/pip/issues/8696&gt;`_)
- New resolver: Pick up hash declarations in constraints files and use them to
  filter available distributions. (`8792 &lt;https://github.com/pypa/pip/issues/8792&gt;`_)
- Avoid polluting the destination directory by resolution artifacts
  when the new resolver is used for ``pip download`` or ``pip wheel``. (`8827 &lt;https://github.com/pypa/pip/issues/8827&gt;`_)
- New resolver: If a package appears multiple times in user specification with
  different ``--hash`` options, only hashes that present in all specifications
  should be allowed. (`8839 &lt;https://github.com/pypa/pip/issues/8839&gt;`_)
- Tweak the output during dependency resolution in the new resolver. (`8861 &lt;https://github.com/pypa/pip/issues/8861&gt;`_)
- Correctly search for installed distributions in new resolver logic in order
  to not miss packages (virtualenv packages from system-wide-packages for example) (`8963 &lt;https://github.com/pypa/pip/issues/8963&gt;`_)
- Do not fail in pip freeze when encountering a ``direct_url.json`` metadata file
  with editable=True. Render it as a non-editable ``file://`` URL until modern
  editable installs are standardized and supported. (`8996 &lt;https://github.com/pypa/pip/issues/8996&gt;`_)

Vendored Libraries
------------------

- Fix devendoring instructions to explicitly state that ``vendor.txt`` should not be removed.
  It is mandatory for ``pip debug`` command.

Improved Documentation
----------------------

- Add documentation for &#39;.netrc&#39; support. (`7231 &lt;https://github.com/pypa/pip/issues/7231&gt;`_)
- Add OS tabs for OS-specific commands. (`7311 &lt;https://github.com/pypa/pip/issues/7311&gt;`_)
- Add note and example on keyring support for index basic-auth (`8636 &lt;https://github.com/pypa/pip/issues/8636&gt;`_)
- Added initial UX feedback widgets to docs. (`8783 &lt;https://github.com/pypa/pip/issues/8783&gt;`_, `8848 &lt;https://github.com/pypa/pip/issues/8848&gt;`_)
- Add ux documentation (`8807 &lt;https://github.com/pypa/pip/issues/8807&gt;`_)
- Update user docs to reflect new resolver as default in 20.3. (`9044 &lt;https://github.com/pypa/pip/issues/9044&gt;`_)
- Improve migration guide to reflect changes in new resolver behavior. (`9056 &lt;https://github.com/pypa/pip/issues/9056&gt;`_)
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pip
  - Changelog: https://pyup.io/changelogs/pip/
  - Homepage: https://pip.pypa.io/
</details>



Co-authored-by: pyup-bot <[email protected]>
bors bot referenced this issue in duckinator/emanate Dec 1, 2020
195: Update pip to 20.3 r=duckinator a=pyup-bot


This PR updates [pip](https://pypi.org/project/pip) from **20.2.4** to **20.3**.



<details>
  <summary>Changelog</summary>
  
  
   ### 20.3
   ```
   - Introduce a new ResolutionImpossible error, raised when pip encounters un-satisfiable dependency conflicts (`8546 &lt;https://github.com/pypa/pip/issues/8546&gt;`_, `8377 &lt;https://github.com/pypa/pip/issues/8377&gt;`_)
- Add a subcommand ``debug`` to ``pip config`` to list available configuration sources and the key-value pairs defined in them. (`6741 &lt;https://github.com/pypa/pip/issues/6741&gt;`_)
- Warn if index pages have unexpected content-type (`6754 &lt;https://github.com/pypa/pip/issues/6754&gt;`_)
- Allow specifying ``--prefer-binary`` option in a requirements file (`7693 &lt;https://github.com/pypa/pip/issues/7693&gt;`_)
- Generate PEP 376 REQUESTED metadata for user supplied requirements installed
  by pip. (`7811 &lt;https://github.com/pypa/pip/issues/7811&gt;`_)
- Warn if package url is a vcs or an archive url with invalid scheme (`8128 &lt;https://github.com/pypa/pip/issues/8128&gt;`_)
- Parallelize network operations in ``pip list``. (`8504 &lt;https://github.com/pypa/pip/issues/8504&gt;`_)
- Allow the new resolver to obtain dependency information through wheels
  lazily downloaded using HTTP range requests.  To enable this feature,
  invoke ``pip`` with ``--use-feature=fast-deps``. (`8588 &lt;https://github.com/pypa/pip/issues/8588&gt;`_)
- Support ``--use-feature`` in requirements files (`8601 &lt;https://github.com/pypa/pip/issues/8601&gt;`_)

Bug Fixes
---------

- Use canonical package names while looking up already installed packages. (`5021 &lt;https://github.com/pypa/pip/issues/5021&gt;`_)
- Fix normalizing path on Windows when installing package on another logical disk. (`7625 &lt;https://github.com/pypa/pip/issues/7625&gt;`_)
- The VCS commands run by pip as subprocesses don&#39;t merge stdout and stderr anymore, improving the output parsing by subsequent commands. (`7968 &lt;https://github.com/pypa/pip/issues/7968&gt;`_)
- Correctly treat non-ASCII entry point declarations in wheels so they can be
  installed on Windows. (`8342 &lt;https://github.com/pypa/pip/issues/8342&gt;`_)
- Update author email in config and tests to reflect decommissioning of pypa-dev list. (`8454 &lt;https://github.com/pypa/pip/issues/8454&gt;`_)
- Headers provided by wheels in .data directories are now correctly installed
  into the user-provided locations, such as ``--prefix``, instead of the virtual
  environment pip is running in. (`8521 &lt;https://github.com/pypa/pip/issues/8521&gt;`_)

Vendored Libraries
------------------

- Vendored htmlib5 no longer imports deprecated xml.etree.cElementTree on Python 3.
- Upgrade appdirs to 1.4.4
- Upgrade certifi to 2020.6.20
- Upgrade distlib to 0.3.1
- Upgrade html5lib to 1.1
- Upgrade idna to 2.10
- Upgrade packaging to 20.4
- Upgrade requests to 2.24.0
- Upgrade six to 1.15.0
- Upgrade toml to 0.10.1
- Upgrade urllib3 to 1.25.9

Improved Documentation
----------------------

- Add ``--no-input`` option to pip docs (`7688 &lt;https://github.com/pypa/pip/issues/7688&gt;`_)
- List of options supported in requirements file are extracted from source of truth,
  instead of being maintained manually. (`7908 &lt;https://github.com/pypa/pip/issues/7908&gt;`_)
- Fix pip config docstring so that the subcommands render correctly in the docs (`8072 &lt;https://github.com/pypa/pip/issues/8072&gt;`_)
- replace links to the old pypa-dev mailing list with https://mail.python.org/mailman3/lists/distutils-sig.python.org/ (`8353 &lt;https://github.com/pypa/pip/issues/8353&gt;`_)
- Fix example for defining multiple values for options which support them (`8373 &lt;https://github.com/pypa/pip/issues/8373&gt;`_)
- Add documentation for the ResolutionImpossible error that helps the user fix dependency conflicts (`8459 &lt;https://github.com/pypa/pip/issues/8459&gt;`_)
- Add feature flags to docs (`8512 &lt;https://github.com/pypa/pip/issues/8512&gt;`_)
- Document how to install package extras from git branch and source distributions. (`8576 &lt;https://github.com/pypa/pip/issues/8576&gt;`_)
   ```
   
  
  
   ### 20.3b1
   ```
   ===================

Deprecations and Removals
-------------------------

- ``pip freeze`` will stop filtering the ``pip``, ``setuptools``, ``distribute`` and ``wheel`` packages from ``pip freeze`` output in a future version.
  To keep the previous behavior, users should use the new ``--exclude`` option. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Deprecate support for Python 3.5 (`8181 &lt;https://github.com/pypa/pip/issues/8181&gt;`_)
- Document that certain removals can be fast tracked. (`8417 &lt;https://github.com/pypa/pip/issues/8417&gt;`_)
- Document that Python versions are generally supported until PyPI usage falls below 5%. (`8927 &lt;https://github.com/pypa/pip/issues/8927&gt;`_)
- Deprecate ``--find-links`` option in ``pip freeze`` (`9069 &lt;https://github.com/pypa/pip/issues/9069&gt;`_)

Features
--------

- Add ``--exclude`` option to ``pip freeze`` and ``pip list`` commands to explicitly exclude packages from the output. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Allow multiple values for --abi and --platform. (`6121 &lt;https://github.com/pypa/pip/issues/6121&gt;`_)
- Add option ``--format`` to subcommand ``list`` of ``pip  cache``, with ``abspath`` choice to output the full path of a wheel file. (`8355 &lt;https://github.com/pypa/pip/issues/8355&gt;`_)
- Improve error message friendliness when an environment has packages with
  corrupted metadata. (`8676 &lt;https://github.com/pypa/pip/issues/8676&gt;`_)
- Make the ``setup.py install`` deprecation warning less noisy. We warn only
  when ``setup.py install`` succeeded and ``setup.py bdist_wheel`` failed, as
  situations where both fails are most probably irrelevant to this deprecation. (`8752 &lt;https://github.com/pypa/pip/issues/8752&gt;`_)
- Check the download directory for existing wheels to possibly avoid
  fetching metadata when the ``fast-deps`` feature is used with
  ``pip wheel`` and ``pip download``. (`8804 &lt;https://github.com/pypa/pip/issues/8804&gt;`_)
- When installing a git URL that refers to a commit that is not available locally
  after git clone, attempt to fetch it from the remote. (`8815 &lt;https://github.com/pypa/pip/issues/8815&gt;`_)
- Include http subdirectory in ``pip cache info`` and ``pip cache purge`` commands. (`8892 &lt;https://github.com/pypa/pip/issues/8892&gt;`_)
- Cache package listings on index packages so they are guarenteed to stay stable
  during a pip command session. This also improves performance when a index page
  is accessed multiple times during the command session. (`8905 &lt;https://github.com/pypa/pip/issues/8905&gt;`_)
- New resolver: Tweak resolution logic to improve user experience when
  user-supplied requirements conflict. (`8924 &lt;https://github.com/pypa/pip/issues/8924&gt;`_)
- Support Python 3.9. (`8971 &lt;https://github.com/pypa/pip/issues/8971&gt;`_)
- Log an informational message when backtracking takes multiple rounds on a specific package. (`8975 &lt;https://github.com/pypa/pip/issues/8975&gt;`_)
- Switch to the new dependency resolver by default. (`9019 &lt;https://github.com/pypa/pip/issues/9019&gt;`_)
- Remove the ``--build-dir`` option, as per the deprecation. (`9049 &lt;https://github.com/pypa/pip/issues/9049&gt;`_)

Bug Fixes
---------

- Propagate ``--extra-index-url`` from requirements file properly to session auth,
  so that keyring auth will work as expected. (`8103 &lt;https://github.com/pypa/pip/issues/8103&gt;`_)
- Allow specifying verbosity and quiet level via configuration files
  and environment variables. Previously these options were treated as
  boolean values when read from there while through CLI the level can be
  specified. (`8578 &lt;https://github.com/pypa/pip/issues/8578&gt;`_)
- Only converts Windows path to unicode on Python 2 to avoid regressions when a
  POSIX environment does not configure the file system encoding correctly. (`8658 &lt;https://github.com/pypa/pip/issues/8658&gt;`_)
- List downloaded distributions before exiting ``pip download``
  when using the new resolver to make the behavior the same as
  that on the legacy resolver. (`8696 &lt;https://github.com/pypa/pip/issues/8696&gt;`_)
- New resolver: Pick up hash declarations in constraints files and use them to
  filter available distributions. (`8792 &lt;https://github.com/pypa/pip/issues/8792&gt;`_)
- Avoid polluting the destination directory by resolution artifacts
  when the new resolver is used for ``pip download`` or ``pip wheel``. (`8827 &lt;https://github.com/pypa/pip/issues/8827&gt;`_)
- New resolver: If a package appears multiple times in user specification with
  different ``--hash`` options, only hashes that present in all specifications
  should be allowed. (`8839 &lt;https://github.com/pypa/pip/issues/8839&gt;`_)
- Tweak the output during dependency resolution in the new resolver. (`8861 &lt;https://github.com/pypa/pip/issues/8861&gt;`_)
- Correctly search for installed distributions in new resolver logic in order
  to not miss packages (virtualenv packages from system-wide-packages for example) (`8963 &lt;https://github.com/pypa/pip/issues/8963&gt;`_)
- Do not fail in pip freeze when encountering a ``direct_url.json`` metadata file
  with editable=True. Render it as a non-editable ``file://`` URL until modern
  editable installs are standardized and supported. (`8996 &lt;https://github.com/pypa/pip/issues/8996&gt;`_)

Vendored Libraries
------------------

- Fix devendoring instructions to explicitly state that ``vendor.txt`` should not be removed.
  It is mandatory for ``pip debug`` command.

Improved Documentation
----------------------

- Add documentation for &#39;.netrc&#39; support. (`7231 &lt;https://github.com/pypa/pip/issues/7231&gt;`_)
- Add OS tabs for OS-specific commands. (`7311 &lt;https://github.com/pypa/pip/issues/7311&gt;`_)
- Add note and example on keyring support for index basic-auth (`8636 &lt;https://github.com/pypa/pip/issues/8636&gt;`_)
- Added initial UX feedback widgets to docs. (`8783 &lt;https://github.com/pypa/pip/issues/8783&gt;`_, `8848 &lt;https://github.com/pypa/pip/issues/8848&gt;`_)
- Add ux documentation (`8807 &lt;https://github.com/pypa/pip/issues/8807&gt;`_)
- Update user docs to reflect new resolver as default in 20.3. (`9044 &lt;https://github.com/pypa/pip/issues/9044&gt;`_)
- Improve migration guide to reflect changes in new resolver behavior. (`9056 &lt;https://github.com/pypa/pip/issues/9056&gt;`_)
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pip
  - Changelog: https://pyup.io/changelogs/pip/
  - Homepage: https://pip.pypa.io/
</details>



Co-authored-by: pyup-bot <[email protected]>
bors bot referenced this issue in duckinator/emanate Dec 4, 2020
194: Update pytest-pylint to 0.18.0 r=duckinator a=pyup-bot


This PR updates [pytest-pylint](https://pypi.org/project/pytest-pylint) from **0.17.0** to **0.18.0**.



*The bot wasn't able to find a changelog for this release. [Got an idea?](https://github.com/pyupio/changelogs/issues/new)*

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pytest-pylint
  - Changelog: https://pyup.io/changelogs/pytest-pylint/
  - Repo: https://github.com/carsongee/pytest-pylint
</details>



197: Update pip to 20.3.1 r=duckinator a=pyup-bot


This PR updates [pip](https://pypi.org/project/pip) from **20.2.4** to **20.3.1**.



<details>
  <summary>Changelog</summary>
  
  
   ### 20.3.1
   ```
   ===================

Deprecations and Removals
-------------------------

- The --build-dir option has been restored as a no-op, to soften the transition
  for tools that still used it. (`9193 &lt;https://github.com/pypa/pip/issues/9193&gt;`_)
   ```
   
  
  
   ### 20.3
   ```
   - Introduce a new ResolutionImpossible error, raised when pip encounters un-satisfiable dependency conflicts (`8546 &lt;https://github.com/pypa/pip/issues/8546&gt;`_, `8377 &lt;https://github.com/pypa/pip/issues/8377&gt;`_)
- Add a subcommand ``debug`` to ``pip config`` to list available configuration sources and the key-value pairs defined in them. (`6741 &lt;https://github.com/pypa/pip/issues/6741&gt;`_)
- Warn if index pages have unexpected content-type (`6754 &lt;https://github.com/pypa/pip/issues/6754&gt;`_)
- Allow specifying ``--prefer-binary`` option in a requirements file (`7693 &lt;https://github.com/pypa/pip/issues/7693&gt;`_)
- Generate PEP 376 REQUESTED metadata for user supplied requirements installed
  by pip. (`7811 &lt;https://github.com/pypa/pip/issues/7811&gt;`_)
- Warn if package url is a vcs or an archive url with invalid scheme (`8128 &lt;https://github.com/pypa/pip/issues/8128&gt;`_)
- Parallelize network operations in ``pip list``. (`8504 &lt;https://github.com/pypa/pip/issues/8504&gt;`_)
- Allow the new resolver to obtain dependency information through wheels
  lazily downloaded using HTTP range requests.  To enable this feature,
  invoke ``pip`` with ``--use-feature=fast-deps``. (`8588 &lt;https://github.com/pypa/pip/issues/8588&gt;`_)
- Support ``--use-feature`` in requirements files (`8601 &lt;https://github.com/pypa/pip/issues/8601&gt;`_)

Bug Fixes
---------

- Use canonical package names while looking up already installed packages. (`5021 &lt;https://github.com/pypa/pip/issues/5021&gt;`_)
- Fix normalizing path on Windows when installing package on another logical disk. (`7625 &lt;https://github.com/pypa/pip/issues/7625&gt;`_)
- The VCS commands run by pip as subprocesses don&#39;t merge stdout and stderr anymore, improving the output parsing by subsequent commands. (`7968 &lt;https://github.com/pypa/pip/issues/7968&gt;`_)
- Correctly treat non-ASCII entry point declarations in wheels so they can be
  installed on Windows. (`8342 &lt;https://github.com/pypa/pip/issues/8342&gt;`_)
- Update author email in config and tests to reflect decommissioning of pypa-dev list. (`8454 &lt;https://github.com/pypa/pip/issues/8454&gt;`_)
- Headers provided by wheels in .data directories are now correctly installed
  into the user-provided locations, such as ``--prefix``, instead of the virtual
  environment pip is running in. (`8521 &lt;https://github.com/pypa/pip/issues/8521&gt;`_)

Vendored Libraries
------------------

- Vendored htmlib5 no longer imports deprecated xml.etree.cElementTree on Python 3.
- Upgrade appdirs to 1.4.4
- Upgrade certifi to 2020.6.20
- Upgrade distlib to 0.3.1
- Upgrade html5lib to 1.1
- Upgrade idna to 2.10
- Upgrade packaging to 20.4
- Upgrade requests to 2.24.0
- Upgrade six to 1.15.0
- Upgrade toml to 0.10.1
- Upgrade urllib3 to 1.25.9

Improved Documentation
----------------------

- Add ``--no-input`` option to pip docs (`7688 &lt;https://github.com/pypa/pip/issues/7688&gt;`_)
- List of options supported in requirements file are extracted from source of truth,
  instead of being maintained manually. (`7908 &lt;https://github.com/pypa/pip/issues/7908&gt;`_)
- Fix pip config docstring so that the subcommands render correctly in the docs (`8072 &lt;https://github.com/pypa/pip/issues/8072&gt;`_)
- replace links to the old pypa-dev mailing list with https://mail.python.org/mailman3/lists/distutils-sig.python.org/ (`8353 &lt;https://github.com/pypa/pip/issues/8353&gt;`_)
- Fix example for defining multiple values for options which support them (`8373 &lt;https://github.com/pypa/pip/issues/8373&gt;`_)
- Add documentation for the ResolutionImpossible error that helps the user fix dependency conflicts (`8459 &lt;https://github.com/pypa/pip/issues/8459&gt;`_)
- Add feature flags to docs (`8512 &lt;https://github.com/pypa/pip/issues/8512&gt;`_)
- Document how to install package extras from git branch and source distributions. (`8576 &lt;https://github.com/pypa/pip/issues/8576&gt;`_)
   ```
   
  
  
   ### 20.3b1
   ```
   ===================

Deprecations and Removals
-------------------------

- ``pip freeze`` will stop filtering the ``pip``, ``setuptools``, ``distribute`` and ``wheel`` packages from ``pip freeze`` output in a future version.
  To keep the previous behavior, users should use the new ``--exclude`` option. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Deprecate support for Python 3.5 (`8181 &lt;https://github.com/pypa/pip/issues/8181&gt;`_)
- Document that certain removals can be fast tracked. (`8417 &lt;https://github.com/pypa/pip/issues/8417&gt;`_)
- Document that Python versions are generally supported until PyPI usage falls below 5%. (`8927 &lt;https://github.com/pypa/pip/issues/8927&gt;`_)
- Deprecate ``--find-links`` option in ``pip freeze`` (`9069 &lt;https://github.com/pypa/pip/issues/9069&gt;`_)

Features
--------

- Add ``--exclude`` option to ``pip freeze`` and ``pip list`` commands to explicitly exclude packages from the output. (`4256 &lt;https://github.com/pypa/pip/issues/4256&gt;`_)
- Allow multiple values for --abi and --platform. (`6121 &lt;https://github.com/pypa/pip/issues/6121&gt;`_)
- Add option ``--format`` to subcommand ``list`` of ``pip  cache``, with ``abspath`` choice to output the full path of a wheel file. (`8355 &lt;https://github.com/pypa/pip/issues/8355&gt;`_)
- Improve error message friendliness when an environment has packages with
  corrupted metadata. (`8676 &lt;https://github.com/pypa/pip/issues/8676&gt;`_)
- Make the ``setup.py install`` deprecation warning less noisy. We warn only
  when ``setup.py install`` succeeded and ``setup.py bdist_wheel`` failed, as
  situations where both fails are most probably irrelevant to this deprecation. (`8752 &lt;https://github.com/pypa/pip/issues/8752&gt;`_)
- Check the download directory for existing wheels to possibly avoid
  fetching metadata when the ``fast-deps`` feature is used with
  ``pip wheel`` and ``pip download``. (`8804 &lt;https://github.com/pypa/pip/issues/8804&gt;`_)
- When installing a git URL that refers to a commit that is not available locally
  after git clone, attempt to fetch it from the remote. (`8815 &lt;https://github.com/pypa/pip/issues/8815&gt;`_)
- Include http subdirectory in ``pip cache info`` and ``pip cache purge`` commands. (`8892 &lt;https://github.com/pypa/pip/issues/8892&gt;`_)
- Cache package listings on index packages so they are guarenteed to stay stable
  during a pip command session. This also improves performance when a index page
  is accessed multiple times during the command session. (`8905 &lt;https://github.com/pypa/pip/issues/8905&gt;`_)
- New resolver: Tweak resolution logic to improve user experience when
  user-supplied requirements conflict. (`8924 &lt;https://github.com/pypa/pip/issues/8924&gt;`_)
- Support Python 3.9. (`8971 &lt;https://github.com/pypa/pip/issues/8971&gt;`_)
- Log an informational message when backtracking takes multiple rounds on a specific package. (`8975 &lt;https://github.com/pypa/pip/issues/8975&gt;`_)
- Switch to the new dependency resolver by default. (`9019 &lt;https://github.com/pypa/pip/issues/9019&gt;`_)
- Remove the ``--build-dir`` option, as per the deprecation. (`9049 &lt;https://github.com/pypa/pip/issues/9049&gt;`_)

Bug Fixes
---------

- Propagate ``--extra-index-url`` from requirements file properly to session auth,
  so that keyring auth will work as expected. (`8103 &lt;https://github.com/pypa/pip/issues/8103&gt;`_)
- Allow specifying verbosity and quiet level via configuration files
  and environment variables. Previously these options were treated as
  boolean values when read from there while through CLI the level can be
  specified. (`8578 &lt;https://github.com/pypa/pip/issues/8578&gt;`_)
- Only converts Windows path to unicode on Python 2 to avoid regressions when a
  POSIX environment does not configure the file system encoding correctly. (`8658 &lt;https://github.com/pypa/pip/issues/8658&gt;`_)
- List downloaded distributions before exiting ``pip download``
  when using the new resolver to make the behavior the same as
  that on the legacy resolver. (`8696 &lt;https://github.com/pypa/pip/issues/8696&gt;`_)
- New resolver: Pick up hash declarations in constraints files and use them to
  filter available distributions. (`8792 &lt;https://github.com/pypa/pip/issues/8792&gt;`_)
- Avoid polluting the destination directory by resolution artifacts
  when the new resolver is used for ``pip download`` or ``pip wheel``. (`8827 &lt;https://github.com/pypa/pip/issues/8827&gt;`_)
- New resolver: If a package appears multiple times in user specification with
  different ``--hash`` options, only hashes that present in all specifications
  should be allowed. (`8839 &lt;https://github.com/pypa/pip/issues/8839&gt;`_)
- Tweak the output during dependency resolution in the new resolver. (`8861 &lt;https://github.com/pypa/pip/issues/8861&gt;`_)
- Correctly search for installed distributions in new resolver logic in order
  to not miss packages (virtualenv packages from system-wide-packages for example) (`8963 &lt;https://github.com/pypa/pip/issues/8963&gt;`_)
- Do not fail in pip freeze when encountering a ``direct_url.json`` metadata file
  with editable=True. Render it as a non-editable ``file://`` URL until modern
  editable installs are standardized and supported. (`8996 &lt;https://github.com/pypa/pip/issues/8996&gt;`_)

Vendored Libraries
------------------

- Fix devendoring instructions to explicitly state that ``vendor.txt`` should not be removed.
  It is mandatory for ``pip debug`` command.

Improved Documentation
----------------------

- Add documentation for &#39;.netrc&#39; support. (`7231 &lt;https://github.com/pypa/pip/issues/7231&gt;`_)
- Add OS tabs for OS-specific commands. (`7311 &lt;https://github.com/pypa/pip/issues/7311&gt;`_)
- Add note and example on keyring support for index basic-auth (`8636 &lt;https://github.com/pypa/pip/issues/8636&gt;`_)
- Added initial UX feedback widgets to docs. (`8783 &lt;https://github.com/pypa/pip/issues/8783&gt;`_, `8848 &lt;https://github.com/pypa/pip/issues/8848&gt;`_)
- Add ux documentation (`8807 &lt;https://github.com/pypa/pip/issues/8807&gt;`_)
- Update user docs to reflect new resolver as default in 20.3. (`9044 &lt;https://github.com/pypa/pip/issues/9044&gt;`_)
- Improve migration guide to reflect changes in new resolver behavior. (`9056 &lt;https://github.com/pypa/pip/issues/9056&gt;`_)
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pip
  - Changelog: https://pyup.io/changelogs/pip/
  - Homepage: https://pip.pypa.io/
</details>



Co-authored-by: pyup-bot <[email protected]>
Co-authored-by: Ellen Marie Dash <[email protected]>
@pabloa

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