- Added support for multiple-constraint direct origin dependencies with the same
version ([#5715](https://github.com/python-poetry/poetry/pull/5715))
- Added support disabling TLS verification for custom package sources via `poetry config certificates.<repository>.cert false` ([#5719](https://github.com/python-poetry/poetry/pull/5719)
- Added new configuration (`virtualenvs.prompt`) to customize the prompt of the Poetry-managed virtual environment ([#5606](https://github.com/python-poetry/poetry/pull/5606))
- Added progress indicator to `download_file` (used when downloading dists) ([#5451](https://github.com/python-poetry/poetry/pull/5451))
- Added `--dry-run` to `poetry version` command ([#5603](https://github.com/python-poetry/poetry/pull/5603))
- Added `--why` to `poetry show` ([#5444](https://github.com/python-poetry/poetry/pull/5444))
- Added support for single page (html) repositories ([#5517](https://github.com/python-poetry/poetry/pull/5517))
- Added support for PEP 508 strings when adding
dependencies via `poetry add` command ([#5554](https://github.com/python-poetry/poetry/pull/5554))
- Added `--no-cache` as a global option ([#5519](https://github.com/python-poetry/poetry/pull/5519))
- Added cert retrieval for HTTP requests made by Poetry ([#5320](https://github.com/python-poetry/poetry/pull/5320))
- Added `--skip-existing` to `poetry publish` ([#2812](https://github.com/python-poetry/poetry/pull/2812))
- Added `--all-extras` to `poetry install` ([#5452](https://github.com/python-poetry/poetry/pull/5452))
- Added new `poetry self` sub-commands to manage plugins and/or system environment packages, eg: keyring backends ([#5450](https://github.com/python-poetry/poetry/pull/5450))
- Added new configuration (`installer.no-binary`) to allow selection of non-binary distributions when installing a dependency ([#5609](https://github.com/python-poetry/poetry/pull/5609))
### Changed
-`poetry plugin` commands are now deprecated in favor of the more generic `poetry self`
- When creating new projects, Poetry no longer restricts README extensions to `md` and `rst` ([#5357](https://github.com/python-poetry/poetry/pull/5357))
- Changed the provider to allow fallback to installed packages ([#5704](https://github.com/python-poetry/poetry/pull/5704))
- Solver now correctly handles and prefers direct reference constraints (vcs, file etc.) over public version identifiers ([#5654](https://github.com/python-poetry/poetry/pull/5654))
- Changed the build script behavior to create an ephemeral build environment when a build script is
- Improved performance when determining PEP 517 metadata from sources ([#5601](https://github.com/python-poetry/poetry/pull/5601))
- Project package sources no longer need to be redefined as global repositories when configuring credentials ([#5563](https://github.com/python-poetry/poetry/pull/5563))
- Replaced external git command use with dulwich, in order to force the legacy behaviour set `experimental.system-git-client` configuration to `true` ([#5428](https://github.com/python-poetry/poetry/pull/5428))
- Improved http request handling for sources and multiple paths on same netloc ([#5518](https://github.com/python-poetry/poetry/pull/5518))
- Made `no-pip` and `no-setuptools` configuration explicit ([#5455](https://github.com/python-poetry/poetry/pull/5455))
- Improved application logging, use of `-vv` now provides more debug information ([#5503](https://github.com/python-poetry/poetry/pull/5503))
- Renamed implicit group `default` to `main` ([#5465](https://github.com/python-poetry/poetry/pull/5465))
- Replaced in-tree implementation of `poetry export`
with `poetry-plugin-export` ([#5413](https://github.com/python-poetry/poetry/pull/5413))
- Changed the password manager behavior to use a `"null"` keyring when
- Incremental improvement of Solver performance ([#5335](https://github.com/python-poetry/poetry/pull/5335))
- Newly created virtual environments on macOS now are excluded from Time Machine backups ([#4599](https://github.com/python-poetry/poetry/pull/4599))
- Poetry no longer raises an exception when a package is not found on PyPI ([#5698](https://github.com/python-poetry/poetry/pull/5698))
- Update `packaging` dependency to use major version 21, this change forces Poetry to drop support for managing Python 2.7 environments ([#4749](https://github.com/python-poetry/poetry/pull/4749))
### Fixed
- Fixed `poetry update --dry-run` to not modify `poetry.lock` ([#5718](https://github.com/python-poetry/poetry/pull/5718), [#3666](https://github.com/python-poetry/poetry/issues/3666), [#3766](https://github.com/python-poetry/poetry/issues/3766))
- Fixed [#5537](https://github.com/python-poetry/poetry/issues/5537) where export fails to resolve dependencies with more than one
- Fixed an issue where the environment variables `POETRY_CONFIG_DIR` and `POETRY_CACHE_DIR` were not being respected ([#5672](https://github.com/python-poetry/poetry/pull/5672))
- Fixed [#3628](https://github.com/python-poetry/poetry/issues/3628) and [#4702](https://github.com/python-poetry/poetry/issues/4702) by handling invalid distributions
- Fixed an issue where editable path dependencies using `setuptools` could not be correctly installed ([#5590](https://github.com/python-poetry/poetry/pull/5590))
- Fixed flicker when displaying executor operations ([#5556](https://github.com/python-poetry/poetry/pull/5556))
- Fixed an issue where the `poetry lock --no-update` only sorted by name and not by name and
version ([#5446](https://github.com/python-poetry/poetry/pull/5446))
- Fixed an issue where the Solver fails when a dependency has multiple constrained dependency definitions for the same
- Added PEP 508 name requirement ([#5642](https://github.com/python-poetry/poetry/pull/5642))
- Added example for each section of pyproject.toml ([#5585](https://github.com/python-poetry/poetry/pull/5642))
- Added documentation for `--local` to fix issue [#5623](https://github.com/python-poetry/poetry/issues/5623)([#5629](https://github.com/python-poetry/poetry/pull/5629))
- Added troubleshooting documentation for using proper quotation with
- Improved dependency group related documentation ([#5338](https://github.com/python-poetry/poetry/pull/5338))
- Added documentation for default directories used by Poetry ([#5391](https://github.com/python-poetry/poetry/pull/5301))
- Added warning about credentials preserved in shell history ([#5726](https://github.com/python-poetry/poetry/pull/5726))
- Improved documentation of the `readme` option, including multiple files and additional formats ([#5158](https://github.com/python-poetry/poetry/pull/5158))
