1.7.0

Features

• Added deepcopy support to FrozenList -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #659.

Packaging updates and notes for downstreams

• Fixed an issue where frozenlist binary wheels would be built with debugging symbols and line tracing enabled, which significantly impacted performance. Line tracing is now disabled by default and can only be enabled explicitly -- by :user:bdraco.

  This change ensures that production builds are optimized for performance. Developers who need line tracing for debugging purposes can still enable it by:

  1. Setting the FROZENLIST_CYTHON_TRACING environment variable
  2. Using the --config-setting=with-cython-tracing=true option with pip

  Related issues and pull requests on GitHub:
  #660.

• Enabled PIP_CONSTRAINT environment variable in the build configuration to ensure the pinned Cython version from requirements/cython.txt is used during wheel builds.

  Related issues and pull requests on GitHub:
  #661.

---

1.6.2

No changes from 1.6.1. This is re-publish since 1.6.1 failed to publish.

No significant changes.

---

1.6.1

This release was yanked because the upload job failed to upload all files to PyPI

Bug fixes

• Correctly use cimport for including PyBool_FromLong -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  #653.

Packaging updates and notes for downstreams

• Exclude _frozenlist.cpp from bdists/wheels -- by :user:musicinmybrain.

  Related issues and pull requests on GitHub:
  #649.

• Updated to use Cython 3.1 universally across the build path -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  #654.

---

1.6.0

Bug fixes

• Stopped implicitly allowing the use of Cython pre-release versions when
  building the distribution package -- by :user:ajsanchezsanz and
  :user:markgreene74.

  Related commits on GitHub:
  :commit:41591f2.

Features

• Implemented support for the free-threaded build of CPython 3.13 -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  #618.

• Started building armv7l wheels -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  #642.

Packaging updates and notes for downstreams

• Stopped implicitly allowing the use of Cython pre-release versions when
  building the distribution package -- by :user:ajsanchezsanz and
  :user:markgreene74.

  Related commits on GitHub:
  :commit:41591f2.

• Started building wheels for the free-threaded build of CPython 3.13 -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  #618.

• The packaging metadata switched to including an SPDX license identifier introduced in :pep:639 -- by :user:cdce8p.

  Related issues and pull requests on GitHub:
  #639.

Contributor-facing changes

• GitHub Actions CI/CD is now configured to manage caching pip-ecosystem
  dependencies using re-actors/cache-python-deps_ -- an action by
  :user:webknjaz that takes into account ABI stability and the exact
  version of Python runtime.

  .. _re-actors/cache-python-deps:
  https://github.com/marketplace/actions/cache-python-deps

  Related issues and pull requests on GitHub:
  #633.

• Organized dependencies into test and lint dependencies so that no
  unnecessary ones are installed during CI runs -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  #636.

1.5.0

Bug fixes

• An incorrect signature of the __class_getitem__ class method
  has been fixed, adding a missing class_item argument under
  Python 3.8 and older.

  This change also improves the code coverage of this method that
  was previously missing -- by :user:webknjaz.

  Related issues and pull requests on GitHub:
  #567, #571.

Improved documentation

• Rendered issue, PR, and commit links now lead to
  frozenlist's repo instead of yarl's repo.

  Related issues and pull requests on GitHub:
  #573.

• On the :doc:Contributing docs <contributing/guidelines> page,
  a link to the Towncrier philosophy has been fixed.

  Related issues and pull requests on GitHub:
  #574.

Packaging updates and notes for downstreams

• A name of a temporary building directory now reflects
  that it's related to frozenlist, not yarl.

  Related issues and pull requests on GitHub:
  #573.

• Declared Python 3.13 supported officially in the distribution package metadata.

  Related issues and pull requests on GitHub:
  #595.

---

1.4.1

Packaging updates and notes for downstreams

• Declared Python 3.12 and PyPy 3.8-3.10 supported officially
  in the distribution package metadata.

  Related issues and pull requests on GitHub:
  #553.

• Replaced the packaging is replaced from an old-fashioned :file:setup.py to an
  in-tree :pep:517 build backend -- by :user:webknjaz.

  Whenever the end-users or downstream packagers need to build frozenlist
  from source (a Git checkout or an sdist), they may pass a config_settings
  flag pure-python. If this flag is not set, a C-extension will be built
  and included into the distribution.

  Here is how this can be done with pip:

  .. code-block:: console

  $ python3 -m pip install . --config-settings=pure-python=
  

  This will also work with -e | --editable.

  The same can be achieved via pypa/build:

  .. code-block:: console

  $ python3 -m build --config-setting=pure-python=
  

  Adding -w | --wheel can force pypa/build produce a wheel from source
  directly, as opposed to building an sdist and then building from it.

  Related issues and pull requests on GitHub:
  #560.

Contributor-facing changes

• It is now possible to request line tracing in Cython builds using the
  with-cython-tracing :pep:517 config setting
  -- :user:webknjaz.

  This can be used in CI and development environment to measure coverage
  on Cython modules, but is not normally useful to the end-users or
  downstream packagers.

  Here's a usage example:

  .. code-block:: console

  $ python3 -Im pip install . --config-settings=with-cython-tracing=true
  

  For editable installs, this setting is on by default. Otherwise, it's
  off unless requested explicitly.

  The following produces C-files required for the Cython coverage
  plugin to map the measurements back to the PYX-files:

  .. code-block:: console

  $ python -Im pip install -e .
  

  Alternatively, the FROZENLIST_CYTHON_TRACING=1 environment variable
  can be set to do the same as the :pep:517 config setting.

  Related issues and pull requests on GitHub:
  #560.

• Coverage collection has been implemented for the Cython modules
  -- by :user:webknjaz.

  It will also be reported to Codecov from any non-release CI jobs.

  Related issues and pull requests on GitHub:
  #561.

• A step-by-step :doc:Release Guide <contributing/release_guide> guide has
  been added, describing how to release frozenlist -- by :user:webknjaz.

  This is primarily targeting the maintainers.

  Related issues and pull requests on GitHub:
  #563.

• Detailed :doc:Contributing Guidelines <contributing/guidelines> on
  authoring the changelog fragments have been published in the
  documentation -- by :user:webknjaz.

  Related issues and pull requests on GitHub:
  #564.

---

1.4.0

The published source distribution package became buildable
under Python 3.12.

---

Bugfixes

• Removed an unused :py:data:typing.Tuple import
  (#411)_

Deprecations and Removals

• Dropped Python 3.7 support.
  (#413)_

Misc

• (#410), (#433)

---

1.3.3

• Fixed CI runs when creating a new release, where new towncrier versions
  fail when the current version section is already present.

---

1.3.1

The published source distribution package became buildable
under Python 3.11.

---

v1.3.0a0

Bugfixes

• Do not install C sources with binary distributions.
  (#250)_

Deprecations and Removals

• Dropped Python 3.6 support
  (#274)_

---