Released v19.1 Features -------- - Configuration files may now also be stored under ``sys.prefix``. - Avoid creating an unnecessary local clone of a Bazaar branch when exporting. - Include in pip's User-Agent string whether it looks like pip is running under CI. - A custom (JSON-encoded) string can now be added to pip's User-Agent using the ``PIP_USER_AGENT_USER_DATA`` environment variable. - For consistency, passing ``--no-cache-dir`` no longer affects whether wheels will be built. In this case, a temporary directory is used. - Command arguments in ``subprocess`` log messages are now quoted using ``shlex.quote()``. - Prefix warning and error messages in log output with `WARNING` and `ERROR`. - Using ``--build-options`` in a PEP 517 build now fails with an error, rather than silently ignoring the option. - Error out with an informative message if one tries to install a ``pyproject.toml``-style (PEP 517) source tree using ``--editable`` mode. - When downloading a package, the ETA and average speed now only update once per second for better legibility. Bug Fixes --------- - The stdout and stderr from VCS commands run by pip as subprocesses (e.g. ``git``, ``hg``, etc.) no longer pollute pip's stdout. - Fix handling of requests exceptions when dependencies are debundled. - Make pip's self version check avoid recommending upgrades to prereleases if the currently-installed version is stable. - Fixed crash when installing a requirement from a URL that comes from a dependency without a URL. - Improve handling of file URIs: correctly handle `file://localhost/...` and don't try to use UNC paths on Unix. - Fix ``utils.encoding.auto_decode()`` ``LookupError`` with invalid encodings. ``utils.encoding.auto_decode()`` was broken when decoding Big Endian BOM byte-strings on Little Endian or vice versa. - Fix incorrect URL quoting of IPv6 addresses. - Redact the password from the extra index URL when using ``pip -v``. - The spinner no longer displays a completion message after subprocess calls not needing a spinner. It also no longer incorrectly reports an error after certain subprocess calls to Git that succeeded. - Fix the handling of editable mode during installs when ``pyproject.toml`` is present but PEP 517 doesn't require the source tree to be treated as ``pyproject.toml``-style. - Fix ``NameError`` when handling an invalid requirement. Vendored Libraries ------------------ - Updated certifi to 2019.3.9 - Updated distro to 1.4.0 - Update progress to 1.5 - Updated pyparsing to 2.4.0 - Updated pkg_resources to 41.0.1 (via setuptools) Improved Documentation ---------------------- - Make dashes render correctly when displaying long options like ``--find-links`` in the text.