-Prefixpip's ``--log`` file lines with their timestamp. (`#6141 <https://github.com/pypa/pip/issues/6141>`_)
Bug Fixes
---------
- Handle a broken stdout pipe more gracefully (e.g. when running ``pip list | head``). (`#4170 <https://github.com/pypa/pip/issues/4170>`_)
- Avoids creating excessively long temporary paths when uninstalling packages. (`#3055 <https://github.com/pypa/pip/issues/3055>`_)
- Avoid creating excessively long temporary paths when uninstalling packages. (`#3055 <https://github.com/pypa/pip/issues/3055>`_)
- Redact the password from the URL in various log messages. (`#4746 <https://github.com/pypa/pip/issues/4746>`_)
- Editable Git installs without a remote now freeze as editable. (`#4759 <https://github.com/pypa/pip/issues/4759>`_)
- give 401 warning if username/password do not work for URL (`#4833 <https://github.com/pypa/pip/issues/4833>`_)
- Invalid requirement no longer causes stack trace to be printed. (`#5147 <https://github.com/pypa/pip/issues/5147>`_)
- Present 401 warning if username/password do not work for URL (`#4833 <https://github.com/pypa/pip/issues/4833>`_)
- Avoid printing a stack trace when given an invalid requirement. (`#5147 <https://github.com/pypa/pip/issues/5147>`_)
- Handle ``requests.exceptions.RetryError`` raised in ``PackageFinder`` that was causing pip to fail silently when some indexes were unreachable. (`#5270 <https://github.com/pypa/pip/issues/5270>`_, `#5483 <https://github.com/pypa/pip/issues/5483>`_)
- Setting ``PIP_NO_CACHE_DIR=yes`` no longer causes pip to crash. (`#5385 <https://github.com/pypa/pip/issues/5385>`_)
- - Improve PEP 518 build isolation: handle .pth files, so namespace packages are correctly supported under Python 3.2 and earlier. (`#5656 <https://github.com/pypa/pip/issues/5656>`_)
- ``pip list --outdated --not-required`` should list only outdated packages that are not dependencies of installed packages (`#5737 <https://github.com/pypa/pip/issues/5737>`_)
- Fix crash from setting ``PIP_NO_CACHE_DIR=yes``. (`#5385 <https://github.com/pypa/pip/issues/5385>`_)
- Improve build isolation: handle ``.pth`` files, so namespace packages are correctly supported under Python 3.2 and earlier. (`#5656 <https://github.com/pypa/pip/issues/5656>`_)
- Fix listing of outdated packages that are not dependencies of installed packages in ``pip list --outdated --not-required`` (`#5737 <https://github.com/pypa/pip/issues/5737>`_)
- Fix content type detection if a directory named like an archive is used as a package source. (`#5838 <https://github.com/pypa/pip/issues/5838>`_)
- Fix crashes from unparseable requirements when checking installed packages. (`#5839 <https://github.com/pypa/pip/issues/5839>`_)
- Fix crash from unparseable requirements when checking installed packages. (`#5839 <https://github.com/pypa/pip/issues/5839>`_)
- Fix support for invoking pip using ``python src/pip ...``. (`#5841 <https://github.com/pypa/pip/issues/5841>`_)
- Greatly reduce memory usage when installing wheels containing large files. (`#5848 <https://github.com/pypa/pip/issues/5848>`_)
- Fix sorting ``TypeError`` in ``move_wheel_files()`` when installing some packages. (`#5868 <https://github.com/pypa/pip/issues/5868>`_)
- Canonicalize sdist file names so they can be matched to a canonicalized package name passed to ``pip install``. (`#5870 <https://github.com/pypa/pip/issues/5870>`_)
- Percent-decode special characters in SVN URL credentials. (`#5968 <https://github.com/pypa/pip/issues/5968>`_)
- Properly decode special characters in SVN URL credentials. (`#5968 <https://github.com/pypa/pip/issues/5968>`_)
- Redact the password from index urls in a debug message (using --no-index & --verbose options together) (`#6124 <https://github.com/pypa/pip/issues/6124>`_)
Vendored Libraries
...
...
@@ -76,10 +76,10 @@ Vendored Libraries
Improved Documentation
----------------------
- Remove references to removed #egg=<name>-<version> functionality (`#5888 <https://github.com/pypa/pip/issues/5888>`_)
- Adds instructions for running pip from source to Development documentation. (`#5949 <https://github.com/pypa/pip/issues/5949>`_)
- Remove references to removed ``#egg=<name>-<version>`` functionality (`#5888 <https://github.com/pypa/pip/issues/5888>`_)
- Add instructions for running pip from source to Development documentation. (`#5949 <https://github.com/pypa/pip/issues/5949>`_)
- Include the Vendoring Policy in the documentation. (`#5958 <https://github.com/pypa/pip/issues/5958>`_)
- Add command information in usage document for pip cmd (`#5984 <https://github.com/pypa/pip/issues/5984>`_)
- Fix omission of command name in HTML usage documentation (`#5984 <https://github.com/pypa/pip/issues/5984>`_)