meson-python

• Restore compatibility with Python interpreters not implementing PEP 3149.

• Add support for the stable ABI for free-threaded interpreters (abi3t).
• Add support for the stable ABI extension modules' platform-specific filename
  suffixes introduced in Python 3.15.
• Allow specifying editable-verbose in pyproject.toml.
• Improve the default behavior of editable installs by capturing and reporting
  build errors when rebuilding.
• Use .start files (PEP 829) instead of .pth files to implement editable
  wheels for Python 3.15 and later.

• Add support for targeting the Android platform.

• Drop Python 3.8 support.
• Development-related extras were moved to dependency groups.
• Add support for targeting the iOS platform.
• The strip binary is now included in synthesized cross files.
• Documentation improvements: add more examples for specific use cases, and a
  contributing guide.
• Use trusted publishing with digital attestations to upload release artifacts
  to PyPI.

• Drop Python 3.7 support.
• Bump minimum required Meson version to 0.64.0.
• Bump minimum required pyproject-metadata version to 0.9.0 to enable
  support for PEP 639.
• Bump minimum required packaging version to 23.2. pyproject-metadata
  version 0.9.1 requires this version of packaging but fails to record the
  version requirement in the package metadata. Enforcing the version
  requirement in meson-python allows fixing possible dependency problems
  without having meson-python depend on a very recent
  pyproject-metadata release.
• Add support for PEP 639 metadata fields. Canonicalization and validation of
  the license expression requires packaging version 24.2 or later.
• Add support for declaring the licence and license-files as dynamic
  fields in pyproject.toml to extract the package license and license
  files from the ones declared via the project() call in
  meson.build. This requires Meson version 1.6.0 or later.
• Add support for RPATH handling on SunOS.
• Include shared libraries built as part of the Meson project in the Python
  wheels also on Windows, when explicitly enabled via the
  tool.meson-python.allow-windows-internal-shared-libs project setting.
• Add support for symbolic links that point to files within the source tree.
  They are now included as regular files in the sdist archive.

• Update tests to work with newly released pyproject-metadata 0.9.0.
• Fix tests to work when not executed in a git work tree.

• Refuse to build wheels targeting the limited API and free-threaded CPython:
  the free-threaded CPython build does not support the limited API yet.
• Always use UTF-8 encoding for writing Meson native and cross files. Always
  use UTF-8 encoding for reading read Meson introspection data and
  pyproject.toml.
• Do not include uncommitted changes when creating source distributions.
  Previously, uncommitted changes to files under version control were
  included, but not untracked files. There was no strong use case for this
  behavior and it was too surprising to keep it.
• Make source distribution reproducible: use the modification time of
  pyproject.toml for the generated files in the source distribution
  archives.
• Disable the abi3 wheel tag for PyPy when building wheels targeting the
  limited API: PyPy supports the limited API but not the stable ABI.
• Raise ImportError when the package rebuild fails when importing an
  editable install.
• Fix the wheel platform tag for GraalPy.
• Add .gitignore and .hgignore files to build directory if it is empty.
• Allow install_subdir() of missing directories.

• Correctly detect a wheel shipping shared libraries as being platform
  dependent also when it does not ship compiled executables or Python
  extension modules.
• Use 11.0 as minimum macOS platform ABI tag on arm64: lower versions
  do not exist on arm64.
• Improve parsing of the $ARCHFLAGS environment
  variable. Correctly handle repeated -arch flags.
• Do not break when trying to log filename containing Unicode
  characters that cannot be encoded in the encoding used by the
  standard output stream.
• Drop dependency on colorama on Windows.
• Suppress all uses of ANSI terminal escapes when logging to a stream
  that does not support them.
• Fix ANSI escape coloring of error messages.
• Respect the exclude_dirs and exclude_files arguments passed
  to the install_subdir() Meson function in editable installs too.
• Make pkgutil.iter_packages() work properly for modules loaded
  from editable installs.
• Add support for the custom_target() Meson function installing a
  directory.
• In editable installs, when a rebuild is triggered on module import,
  emit a message indicating that the package is being rebuilt but
  suppress any output when there is no work to do.

• Enable compression for wheel files. The may result in several times
  smaller wheels.
• Require Meson 1.2.3 or later on Python 3.12 or later. Meson 1.2.3
  does not require anymore distutils, allowing to remove the
  dependency on setuptools on Python 3.12 or later.
• Unconditionally require patchelf on Linux. The patchelf
  package is added to the build dependencies if a suitable
  patchelf executable is not find on the $PATH. This avoids
  cases where meson setup was run twice during the build process
  to determine whether patchelf is required.
• Allow to configure the meson executable to use for the build
  process through the $MESON environment variable or the meson
  key under [tool.meson-python] in pyproject.toml.
• Fix wheel platform tag generation on FreeBSD.
• Extend support to other UNIX-like systems and make the tests pass on
  FreeBSD.
• Fix package name normalization in package metadata and improve
  package name validation.
• Fix RPATH handling when the build RPATH points to
  subdirectories of the build directory.
• Fix support for the Python limited C API when compiling for PyPy.
• Rename the builddir config-setting to build-dir. For
  backwards compatibility, the buildir config-setting remains
  supported as an alias.

• Do not run meson install to build a wheel. This was unnecessary
  as files are added to the wheel from the build and source
  directories. This does not affect the handling of meson install
  options, which are interpreted by meson-python itself.
• Obey the --skip-subprojects when specified for the meson install command.
• Implement support for the exclude_directories and
  exclude_files arguments to Meson install_subdir() function
  and similar installation functions. This requires Meson version
  1.1.0 or later.
• Implement support for building wheels targeting the Python limited
  API. Extension modules targeting the Python limited API can be
  easily built starting with the upcoming Meson 1.3.0 release.
• when pyproject.toml does not contain a version field and
  version is not declared dynamic, raise an error instead of
  silently using the version declared in meson.build.
• Fix the mtime of source files in the sdist tarball.
• Add objc and objcpp compilers to the cross file generated
  when the $ARCHFLAGS is set.
• Extensive documentation improvements.

• Fix system name in cross file generated when using $ARCHFLAGS.
• Fix handling of null Meson install tags.

• Fix regression in cross-compilation via $ARCHFLAGS on macOS where the
  cross file was written in the build directory before it was created,
  resulting in an error.
• Do not require setting $_PYTHON_HOST_PLATFORM when cross-compiling via
  $ARCHFLAGS on macOS.
• Add the --quiet option when invoking meson install. The installation
  paths are a detail of the meson-python implementation and are generally
  not interesting for the user.
• Fix terminal logging when overriding the current line when listing files
  added to the wheel.
• Improve the error message emitted when a package split between the
  purelib and platlib wheel locations is detected.

• Add support for editable installs.

• Adjust the default build options passed to meson setup.

• Make sure that the directory where the wheel or sdist build artifacts are created exists. Fixes building with PDM.

• Fix the specification of the C++ compiler for cross-compilation with $ARCHFLAGS on macOS.

• Pass the --reconfigure option to meson setup if and only if the specified build directory exists and is a valid Meson build directory.

• Pass the --no-rebuild option to meson install.

• Allow to select the files to be included in the wheel via Meson install tags passing the --tags option to meson install via pyproject.toml or config settings.

• Do not use the meson compile indirection to build the project, except on Windows, where it is required to setup the Visual Studio environment.

• Do not add ninja to the build dependencies if $NINJA is set but it does not point to a ninja executable with the required minimum version.

• Verify at run time that Meson satisfies the minimum required version.

• Place native and cross files in the build directory instead of in the source directory.

• Drop the typing-extensions package dependency.

• Add dependency on setuptools on Python 3.12 and later. This fixes build error due to Meson depending on the distutils standard library module removed in Python 3.12.

• Bump the required pyproject-metadata version to 0.7.1.

• Allows some more cross-compilation setups by not checking extension modules filename suffixes against the suffixes accepted by the current interpreter.

• Raise an error when a file that would be installed by Meson cannot be mapped to a wheel location.

• Raise an error when a package is split between platlib and purelib.

• Do not generate a warning when pyproject.toml does not contain a project section and Python package metadata is derived from meson.build.

• Improve reporting of pyproject.toml validation errors.

• Fix validation of tool specific options in pyproject.toml. In particular, allows to specify an incomplete set of options in the tool.meson-python.args table.

Daniele Nicolodi, Doron Behar, Eli Schwartz, Filipe Laíns, Lars Pastewka, Luigi Giugliano, Matthias Köppe, Peter Urban, Ralf Gommers, Stefan van der Walt, Thomas Li --- 18-04-2023.

• Fix regression where the $MACOSX_DEPLOYMENT_TARGET environment variable was accidentally renamed to $MACOS_DEPLOYMENT_TARGET.

Filipe Laíns, Stefan van der Walt --- 17-02-2023.

• Require the typing_extensions package for Python < 3.10 rather than for Python < 3.8 only.

• Emit an error message and raise SystemExit on expected errors.

• Revise error messages for consistency.

• Support setuptools-style macOS cross compilation via $ARCHFLAGS.

• Allow to overwrite macOS platform tag via $_PYTHON_HOST_PLATFORM.

• Include an hint with the most similar known option names in the error message emitted when an unknown config setting is encountered.

Daniele Nicolodi, Filipe Laíns, Henry Schreiner, Matthias Köppe, Thomas A Caswell --- 22-12-2022.

• Project moved to the mesonbuild organization.

• Determine wheel tags by introspecting the Python interpreter.

• Allow users to pass options directly to Meson via the dist, setup, compile, and install entries in the tools.meson-python.args table in pyproject.toml, or via the dist-args, setup-args, compile-args, and install-args config settings.

• Use the system ninja if possible. Return ninja as a build dependency otherwise.

• Include files generated by mesonadd_dist_script in the sdist.

• Use tomllib on Python 3.11 or later.

• Drop the wheel package dependency.

• Fix bug where the entry_points.txt file was not generated.

• Fix bug where Cygwin Python extensions were not being noticed.

Ben Greiner, Daniele Nicolodi, Filipe Laíns, Henry Schreiner, Matthias Köppe, Ralf Gommers, Sam Thursfield, Thomas Li --- 21-11-2022.

• Ignore the minor version on macOS 11 or later, to match the behavior of pypa/packaging.

Filipe Laíns, Ralf Gommers --- 05-10-2022.

• More fixes on ABI tag detection.

• Fix incorrect tag on 32-bit Python running on a x86_64 host.

• Fix sdist permissions.

• Fix incorrect PyPy tags.

• Fix install_subdirs not being included in wheels.

• Take MACOSX_DEPLOYMENT_TARGET into account for the platform tag.

• Don't set the rpath on binaries if unneeded.

Eli Schwartz, Filipe Laíns, Matthias Köppe, Peyton Murray, Ralf Gommers, Thomas Kluyver, Thomas Li --- 29-09-2022.

• Fix UnboundLocalError in tag detection code.

Filipe Laíns, Ralf Gommers --- 28-07-2022.

• Fix sometimes the incorrect ABI tags being generated.

• Add workaround for macOS 11 and 12 installations that are missing a minor version in the platform string.

Filipe Laíns --- 26-07-2022.

• Fix the wrong Python and ABI tags being generated in Meson 0.63.0.

• Fix project license not being included in the project metadata.

Filipe Laíns, Ralf Gommers --- 22-07-2022.

• Project re-licensed to MIT.

• Error out when running in an unsupported interpreter.

• Fix slightly broken Debian heuristics.

• Update pep621 dependency to pyproject-metadata.

Filipe Laíns, Ralf Gommers, Thomas A Caswell --- 21-06-2022.

• Improvements in dependency detections.

• Include uncommited changes in sdists.

Filipe Laíns --- 26-05-2022.

• Set sane default arguments for release builds.

Filipe Laíns --- 06-05-2022.

• Initial cross-platform support.

• Bundling libraries is still only supported on Linux.

• Add initial documentation.

• The build directory is now located in the project source.

Filipe Laíns, Rafael Silva --- 23-03-2022.

• Fix getting the project version dynamically from Meson.

Filipe Laíns --- 26-02-2022.

• Select the correct ABI and Python tags.

• Force Meson to use the correct Python executable.

• Replace auditwheel with in-house vendoring mechanism.

Filipe Laíns --- 24-01-2022.

• Fix auditwheel not being run.

Filipe Laíns --- 12-11-2021.

• Fix minor compatibility issue with Python < 3.9.

Filipe Laíns --- 28-10-2021.

• Initial release.

Filipe Laíns --- 28-10-2021.