### Added - Add `solver.min-release-age` setting to require package releases to be a certain number of days old before they are considered during dependency resolution ([#10824](https://github.com/python-poetry/poetry/pull/10824)). - Add `solver.min-release-age-exclude` to exclude selected packages from age filtering ([#10824](https://github.com/python-poetry/poetry/pull/10824)). - Add `solver.min-release-age-exclude-source` to exclude all packages from selected package indexes from age filtering ([#10824](https://github.com/python-poetry/poetry/pull/10824)). ### Changed - Raise an error instead of silently ignoring a package name that is not a dependency when it is passed to `poetry update` ([#10721](https://github.com/python-poetry/poetry/pull/10721)). - Automatically add a trailing slash to legacy repository URLs (used for publishing) if missing ([#10785](https://github.com/python-poetry/poetry/pull/10785)). - Require `installer>=1.0.0` ([#10869](https://github.com/python-poetry/poetry/pull/10869)). - Allow `findpython>=0.8` ([#10874](https://github.com/python-poetry/poetry/pull/10874)). ### Fixed - Fix an issue where `requires-plugins` fails on Windows if scheme paths are on different drives ([#10869](https://github.com/python-poetry/poetry/pull/10869)). - Fix an issue where the order of markers in the lock file was not deterministic ([#10720](https://github.com/python-poetry/poetry/pull/10720)). - Fix an issue where the wrong command was suggested when `poetry self` commands failed due to an outdated lock file ([#10715](https://github.com/python-poetry/poetry/pull/10715)). - Fix an issue where `poetry env activate` did not work for bash on Windows ([#10716](https://github.com/python-poetry/poetry/pull/10716)). - Fix an issue where `poetry debug resolve` failed when there was a package with a marker ([#10807](https://github.com/python-poetry/poetry/pull/10807)). - Fix an issue where the error message about a build backend failure contained garbled `--config-settings` ([#10804](https://github.com/python-poetry/poetry/pull/10804)). - Fix an issue where a false warning about a circular dependency was printed ([#10811](https://github.com/python-poetry/poetry/pull/10811)). - Fix an issue where falsy config values were incorrectly treated as not set ([#10808](https://github.com/python-poetry/poetry/pull/10808)). - Fix an issue where `poetry publish --build` ignored failing builds and uploaded stale artifacts ([#10802](https://github.com/python-poetry/poetry/pull/10802)). - Fix an issue where `poetry publish` was aborted instead of retrying after package registration ([#10801](https://github.com/python-poetry/poetry/pull/10801)). - Fix an issue where zip files were not closed after fetching metadata via `lazy-wheel` ([#10800](https://github.com/python-poetry/poetry/pull/10800)). - Fix an issue where data fetched via `lazy-wheel` was corrupted when part of it had already been cached ([#10806](https://github.com/python-poetry/poetry/pull/10806)). - Fix an issue where further packages were installed even though installation should be aborted ([#10742](https://github.com/python-poetry/poetry/pull/10742)). - Fix an issue where installed packages without a `METADATA` file caused an exception on Python 3.15+ ([#10860](https://github.com/python-poetry/poetry/pull/10860)). - Fix an issue where `http-basic` could not be set for repository names with periods ([#10845](https://github.com/python-poetry/poetry/pull/10845)). - Fix an issue where calculating the hash of large wheels failed with a memory error ([#10814](https://github.com/python-poetry/poetry/pull/10814)). ### Docs - Clarify the precedence of configuration sources ([#10757](https://github.com/python-poetry/poetry/pull/10757)). - Add a note about the influence of `.gitignore` on `tool.poetry.packages` ([#10835](https://github.com/python-poetry/poetry/pull/10835)). ### poetry-core ([`2.4.0`](https://github.com/python-poetry/poetry-core/releases/tag/2.4.0)) - Update vendored `packaging` to `26.2` ([#936](https://github.com/python-poetry/poetry-core/pull/936)).

### Fixed - Fix a performance regression in the wheel installer that was introduced in Poetry 2.3.3 ([#10821](https://github.com/python-poetry/poetry/pull/10821)). - Fix a path traversal vulnerability in sdist extraction on Python 3.10.0-3.10.12 and 3.11.0-3.11.4 that could allow malicious tarball files to write files outside the target directory ([#10837](https://github.com/python-poetry/poetry/pull/10837)).

### Fixed - Fix an issue where `poetry self show` failed with a message about an invalid output format ([#10560](https://github.com/python-poetry/poetry/pull/10560)). ### Docs - Remove outdated statements about dependency groups ([#10561](https://github.com/python-poetry/poetry/pull/10561)). ### poetry-core ([`2.2.1`](https://github.com/python-poetry/poetry-core/releases/tag/2.2.1)) - Fix an issue where it was not possible to declare a PEP 735 dependency group as optional ([#888](https://github.com/python-poetry/poetry-core/pull/888)).

### Changed - Require `importlib-metadata<8.7` for Python 3.9 because of a breaking change in importlib-metadata 8.7 ([#10374](https://github.com/python-poetry/poetry/pull/10374)). ### Fixed - Fix an issue where re-locking failed for incomplete multiple-constraints dependencies with explicit sources ([#10324](https://github.com/python-poetry/poetry/pull/10324)). - Fix an issue where the `--directory` option did not work if a plugin, which accesses the poetry instance during its activation, was installed ([#10352](https://github.com/python-poetry/poetry/pull/10352)). - Fix an issue where `poetry env activate -v` printed additional information to stdout instead of stderr so that the output could not be used as designed ([#10353](https://github.com/python-poetry/poetry/pull/10353)). - Fix an issue where the original error was not printed if building a git dependency failed ([#10366](https://github.com/python-poetry/poetry/pull/10366)). - Fix an issue where wheels for the wrong platform were installed in rare cases. ([#10361](https://github.com/python-poetry/poetry/pull/10361)). ### poetry-core ([`2.1.3`](https://github.com/python-poetry/poetry-core/releases/tag/2.1.3)) - Fix an issue where the union of specific inverse or partially inverse markers was not simplified ([#858](https://github.com/python-poetry/poetry-core/pull/858)). - Fix an issue where optional dependencies defined in the `project` section were treated as non-optional when a source was defined for them in the `tool.poetry` section ([#857](https://github.com/python-poetry/poetry-core/pull/857)). - Fix an issue where markers with `===` were not parsed correctly ([#860](https://github.com/python-poetry/poetry-core/pull/860)). - Fix an issue where local versions with upper case letters caused an error ([#859](https://github.com/python-poetry/poetry-core/pull/859)). - Fix an issue where `extra` markers with a value starting with "in" were not validated correctly ([#862](https://github.com/python-poetry/poetry-core/pull/862)).

### Changed - Improve performance of locking dependencies ([#10275](https://github.com/python-poetry/poetry/pull/10275)). ### Fixed - Fix an issue where markers were not locked correctly ([#10240](https://github.com/python-poetry/poetry/pull/10240)). - Fix an issue where the result of `poetry lock` was not deterministic ([#10276](https://github.com/python-poetry/poetry/pull/10276)). - Fix an issue where `poetry env activate` returned the wrong command for `tcsh` ([#10243](https://github.com/python-poetry/poetry/pull/10243)). - Fix an issue where `poetry env activate` returned the wrong command for `pwsh` on Linux ([#10256](https://github.com/python-poetry/poetry/pull/10256)). ### Docs - Update basic usage section to reflect new default layout ([#10203](https://github.com/python-poetry/poetry/pull/10203)). ### poetry-core ([`2.1.2`](https://github.com/python-poetry/poetry-core/releases/tag/2.1.2)) - Improve performance of marker operations ([#851](https://github.com/python-poetry/poetry-core/pull/851)). - Fix an issue where incorrect markers were calculated when removing parts covered by the project's Python constraint ([#841](https://github.com/python-poetry/poetry-core/pull/841), [#846](https://github.com/python-poetry/poetry-core/pull/846)). - Fix an issue where `extra` markers were not simplified ([#842](https://github.com/python-poetry/poetry-core/pull/842), [#845](https://github.com/python-poetry/poetry-core/pull/845), [#847](https://github.com/python-poetry/poetry-core/pull/847)). - Fix an issue where the intersection and union of markers was not deterministic ([#843](https://github.com/python-poetry/poetry-core/pull/843)). - Fix an issue where the intersection of `python_version` markers was not recognized as empty ([#849](https://github.com/python-poetry/poetry-core/pull/849)). - Fix an issue where `python_version` markers were not simplified ([#848](https://github.com/python-poetry/poetry-core/pull/848), [#851](https://github.com/python-poetry/poetry-core/pull/851)). - Fix an issue where Python constraints on a package were converted into invalid markers ([#853](https://github.com/python-poetry/poetry-core/pull/853)).

### Fixed - Fix an issue where `poetry env use python` does not choose the Python from the PATH ([#10187](https://github.com/python-poetry/poetry/pull/10187)). ### poetry-core ([`2.1.1`](https://github.com/python-poetry/poetry-core/releases/tag/2.1.1)) - Fix an issue where simplifying a `python_version` marker resulted in an invalid marker ([#838](https://github.com/python-poetry/poetry-core/pull/838)).

### Added - **Make `build` command build-system agnostic** ([#10059](https://github.com/python-poetry/poetry/pull/10059), [#10092](https://github.com/python-poetry/poetry/pull/10092)). - Add a `--config-settings` option to `poetry build` ([#10059](https://github.com/python-poetry/poetry/pull/10059)). - Add support for defining `config-settings` when building dependencies ([#10129](https://github.com/python-poetry/poetry/pull/10129)). - **Add (experimental) commands to manage Python installations** ([#10112](https://github.com/python-poetry/poetry/pull/10112)). - Use `findpython` to find the Python interpreters ([#10097](https://github.com/python-poetry/poetry/pull/10097)). - Add a `--no-truncate` option to `poetry show` ([#9580](https://github.com/python-poetry/poetry/pull/9580)). - Re-add support for passwords with empty usernames ([#10088](https://github.com/python-poetry/poetry/pull/10088)). - Add better error messages ([#10053](https://github.com/python-poetry/poetry/pull/10053), [#10065]( https://github.com/python-poetry/poetry/pull/10065), [#10126](https://github.com/python-poetry/poetry/pull/10126), [#10127](https://github.com/python-poetry/poetry/pull/10127), [#10132](https://github.com/python-poetry/poetry/pull/10132)). ### Changed - **`poetry new` defaults to "src" layout by default** ([#10135](https://github.com/python-poetry/poetry/pull/10135)). - Improve performance of locking dependencies ([#10111](https://github.com/python-poetry/poetry/pull/10111), [#10114](https://github.com/python-poetry/poetry/pull/10114), [#10138](https://github.com/python-poetry/poetry/pull/10138), [#10146](https://github.com/python-poetry/poetry/pull/10146)). - Deprecate adding sources without specifying `--priority` ([#10134](https://github.com/python-poetry/poetry/pull/10134)). ### Fixed - Fix an issue where global options were not handled correctly when positioned after command options ([#10021](https://github.com/python-poetry/poetry/pull/10021), [#10067](https://github.com/python-poetry/poetry/pull/10067), [#10128](https://github.com/python-poetry/poetry/pull/10128)). - Fix an issue where building a dependency from source failed because of a conflict between build-system dependencies that were not required for the target environment ([#10048](https://github.com/python-poetry/poetry/pull/10048)). - Fix an issue where `poetry init` was not able to find a package on PyPI while adding dependencies interactively ([#10055](https://github.com/python-poetry/poetry/pull/10055)). - Fix an issue where the `@latest` descriptor was incorrectly passed to the core requirement parser ([#10069](https://github.com/python-poetry/poetry/pull/10069)). - Fix an issue where Boolean environment variables set to `True` (in contrast to `true`) were interpreted as `false` ([#10080](https://github.com/python-poetry/poetry/pull/10080)). - Fix an issue where `poetry env activate` reported a misleading error message ([#10087](https://github.com/python-poetry/poetry/pull/10087)). - Fix an issue where adding an optional dependency with `poetry add --optional` would not correctly update the lock file ([#10076](https://github.com/python-poetry/poetry/pull/10076)). - Fix an issue where `pip` was not installed/updated before other dependencies resulting in a race condition ([#10102](https://github.com/python-poetry/poetry/pull/10102)). - Fix an issue where Poetry freezes when multiple threads attempt to unlock the `keyring` simultaneously ([#10062](https://github.com/python-poetry/poetry/pull/10062)). - Fix an issue where markers with extras were not locked correctly ([#10119](https://github.com/python-poetry/poetry/pull/10119)). - Fix an issue where self-referential extras were not resolved correctly ([#10106](https://github.com/python-poetry/poetry/pull/10106)). - Fix an issue where Poetry could not be run from a `zipapp` ([#10074](https://github.com/python-poetry/poetry/pull/10074)). - Fix an issue where installation failed with a permission error when using the system environment as a user without write access to system site packages ([#9014](https://github.com/python-poetry/poetry/pull/9014)). - Fix an issue where a version of a dependency that is not compatible with the project's python constraint was locked. ([#10141](https://github.com/python-poetry/poetry/pull/10141)). - Fix an issue where Poetry wrongly reported that the current project's supported Python range is not compatible with some of the required packages Python requirement ([#10157](https://github.com/python-poetry/poetry/pull/10157)). - Fix an issue where the requested extras of a dependency were ignored if the same dependency (with same extras) was specified in multiple groups ([#10158](https://github.com/python-poetry/poetry/pull/10158)). ### Docs - Sort commands by name in the CLI reference ([#10035](https://github.com/python-poetry/poetry/pull/10035)). - Add missing documentation for `env` commands ([#10027](https://github.com/python-poetry/poetry/pull/10027)). - Clarify that the `name` and `version` fields are always required if the `project` section is specified ([#10033](https://github.com/python-poetry/poetry/pull/10033)). - Add a note about restarting the shell for tab completion changes to take effect ([#10070](https://github.com/python-poetry/poetry/pull/10070)). - Fix the example for `project.gui-scripts` [#10121](https://github.com/python-poetry/poetry/pull/10121). - Explain how to include files as scripts in the project configuration ([#9572](https://github.com/python-poetry/poetry/pull/9572), [#10133](https://github.com/python-poetry/poetry/pull/10133)). - Add additional information on specifying required python versions ([#10104](https://github.com/python-poetry/poetry/pull/10104)). ### poetry-core ([`2.1.0`](https://github.com/python-poetry/poetry-core/releases/tag/2.1.0)) - Fix an issue where inclusive ordering with post releases was inconsistent with PEP 440 ([#379](https://github.com/python-poetry/poetry-core/pull/379)). - Fix an issue where invalid URI tokens in PEP 508 requirement strings were silently discarded ([#817](https://github.com/python-poetry/poetry-core/pull/817)). - Fix an issue where wrong markers were calculated when removing parts covered by the project's python constraint ([#824](https://github.com/python-poetry/poetry-core/pull/824)). - Fix an issue where optional dependencies that are not part of an extra were included in the wheel metadata ([#830](https://github.com/python-poetry/poetry-core/pull/830)). - Fix an issue where the `__pycache__` directory and `*.pyc` files were included in sdists and wheels ([#835](https://github.com/python-poetry/poetry-core/pull/835)).

### Added - Add support for `poetry search` in legacy sources ([#9949](https://github.com/python-poetry/poetry/pull/9949)). - Add a message in the `poetry source show` output when PyPI is implicitly enabled ([#9974](https://github.com/python-poetry/poetry/pull/9974)). ### Changed - Improve performance for merging markers from overrides at the end of dependency resolution ([#10018](https://github.com/python-poetry/poetry/pull/10018)). ### Fixed - Fix an issue where `poetry sync` did not remove packages that were not requested ([#9946](https://github.com/python-poetry/poetry/pull/9946)). - Fix an issue where `poetry check` failed even though there were just warnings and add a `--strict` option to fail on warnings ([#9983](https://github.com/python-poetry/poetry/pull/9983)). - Fix an issue where `poetry update`, `poetry add` and `poetry remove` with `--only` uninstalled packages from other groups ([#10014](https://github.com/python-poetry/poetry/pull/10014)). - Fix an issue where `poetry update`, `poetry add` and `poetry remove` uninstalled all extra packages ([#10016](https://github.com/python-poetry/poetry/pull/10016)). - Fix an issue where `poetry self update` did not recognize Poetry's own environment ([#9995](https://github.com/python-poetry/poetry/pull/9995)). - Fix an issue where read-only system site-packages were not considered when loading an environment with system site-packages ([#9942](https://github.com/python-poetry/poetry/pull/9942)). - Fix an issue where an error message in `poetry install` started with `Warning:` instead of `Error:` ([#9945](https://github.com/python-poetry/poetry/pull/9945)). - Fix an issue where `Command.set_poetry`, which is used by plugins, was removed ([#9981](https://github.com/python-poetry/poetry/pull/9981)). - Fix an issue where the help text of `poetry build --clean` showed a malformed short option instead of the description ([#9994](https://github.com/python-poetry/poetry/pull/9994)). ### Docs - Add a FAQ entry for the migration from Poetry-specific fields to the `project` section ([#9996](https://github.com/python-poetry/poetry/pull/9996)). - Fix examples for `project.readme` and `project.urls` ([#9948](https://github.com/python-poetry/poetry/pull/9948)). - Add a warning that package sources are a Poetry-specific feature that is not included in core metadata ([#9935](https://github.com/python-poetry/poetry/pull/9935)). - Replace `poetry install --sync` with `poetry sync` in the section about synchronizing dependencies ([#9944](https://github.com/python-poetry/poetry/pull/9944)). - Replace `poetry shell` with `poetry env activate` in the basic usage section ([#9963](https://github.com/python-poetry/poetry/pull/9963)). - Mention that `project.name` is always required when the `project` section is used ([#9989](https://github.com/python-poetry/poetry/pull/9989)). - Fix the constraint of `poetry-plugin-export` in the section about `poetry export` ([#9954](https://github.com/python-poetry/poetry/pull/9954)). ### poetry-core ([`2.0.1`](https://github.com/python-poetry/poetry-core/releases/tag/2.0.1)) - Replace the deprecated core metadata field `Home-page` with `Project-URL: Homepage` ([#807](https://github.com/python-poetry/poetry-core/pull/807)). - Fix an issue where includes from `tool.poetry.packages` without a specified `format` were not initialized with the default value resulting in a `KeyError` ([#805](https://github.com/python-poetry/poetry-core/pull/805)). - Fix an issue where some `project.urls` entries were not processed correctly resulting in a `KeyError` ([#807](https://github.com/python-poetry/poetry-core/pull/807)). - Fix an issue where dynamic `project.dependencies` via `tool.poetry.dependencies` were ignored if `project.optional-dependencies` were defined ([#811](https://github.com/python-poetry/poetry-core/pull/811)).