serious_python_platform_interface

What's Changed

• Bump to 4.5.1: sign and verify both XCFramework layers by @FeodorFitsner in #245

Full Changelog: v4.5.0...v4.5.1

• Version bump aligning with the serious_python_* 4.5.1 release.

What's Changed

• Bump to 4.5.0: preserve provider XCFramework signatures through staging by @FeodorFitsner in #244

Full Changelog: v4.4.2...v4.5.0

• Version bump aligning with the serious_python_* 4.5.0 release.

What's Changed

• Bump to 4.4.2: Xcode build-provenance keys in iOS framework Info.plists by @FeodorFitsner in #242

Full Changelog: v4.4.1...v4.4.2

• Version bump aligning with the serious_python_* 4.4.2 release.

What's Changed

• Bump to 4.4.1: OpenSSL privacy manifest for iOS _ssl/_hashlib by @FeodorFitsner in #241

Full Changelog: v4.4.0...v4.4.1

• Version bump aligning with the serious_python_* 4.4.1 release.

What's Changed

• Bump to 4.4.0: dart_bridge as a dynamic framework on Apple platforms by @FeodorFitsner in #240

Full Changelog: v4.3.6...v4.4.0

• Version bump aligning with the serious_python_* 4.4.0 release.

What's Changed

• Bump to 4.3.6: Windows UTF-8 startup fix (dart_bridge 1.5.1, python-build 20260720) by @FeodorFitsner in #238
• fix(android): make PEP 734 subinterpreters work (concurrent.interpreters / InterpreterPoolExecutor) by @ndonkoHenri in #239

Full Changelog: v4.3.4...v4.3.6

• Version bump aligning with the serious_python_* 4.3.6 release (Windows UTF-8 startup fix via dart_bridge 1.5.1). No interface changes.

What's Changed

• Bump to 4.3.4: Android flet debug stale-code fix (flet #6682) by @FeodorFitsner in #235
• Re-pin python-build to 20260719: desktop _pyrepl restored (pydoc/pdb, #236) by @FeodorFitsner in #237

Full Changelog: v4.3.3...v4.3.4

• Version bump aligning with the serious_python_* 4.3.4 release (desktop _pyrepl fix + Android flet debug cache fix). No interface changes.

What's Changed

• Fix Windows build failure on non-UTF-8 locales (C4819/C2220) by @FeodorFitsner in #234

Full Changelog: v4.3.2...v4.3.3

• Version bump aligning with the serious_python_* 4.3.3 release.

What's Changed

• Bump to 4.3.2: python-build 20260712 (Android mimalloc seccomp crash, mobile _pyrepl restored) by @FeodorFitsner in #230
• Mobile packaging fixes: iOS interdependent-dylib frameworks + Android native-init packages by @ndonkoHenri in #232
• Re-pin python-build to 20260714: iOS _posixshmem restored (multiprocessing imports) by @FeodorFitsner in #233

Full Changelog: v4.3.1...v4.3.2

• Version bump aligning with the serious_python_* 4.3.2 release.

• Version bump aligning with the serious_python_* 4.3.1 release.

• Version bump aligning with the serious_python_* 4.3.0 release.

• Version bump aligning with the serious_python_* 4.2.1 release.

• Version bump aligning with the serious_python_* 4.2.0 release.

• Version bump aligning with the serious_python_* 4.1.1 release.

• Version bump aligning with the serious_python_* 4.1.0 release.

• Add prepareApp() to SeriousPythonPlatform — materializes the packaged app on disk (if needed) and returns the directory containing its entry point.
• Remove the runtime zip-extraction helpers (extractAssetZip / extractFileZip / extractAssetOrFile / extractAsset); apps now ship unpacked in the bundle (or, on Android, as a stored asset unpacked by the platform plugin). getDirFiles is retained.
• Version bump aligning with the serious_python_* 4.0.0 release (app files unpacked in the bundle).

• Remove the scaffold getPlatformVersion method from the platform interface and its method-channel implementation.
• Version bump aligning with the serious_python_* 3.0.0 release (in-process dart_bridge FFI transport, Flutter 3.44.2).

• Version bump aligning with the major release of the serious_python_* platform plugins (multi-version Python support, default Python now 3.14). No interface changes.

Improvements

• Cache downloaded Python distribution tarballs (python-android-dart-<py>-<abi>.tar.gz) across builds. The downloadDistArchive_* Gradle tasks now write to a persistent cache directory — $FLET_CACHE_DIR/python-build/v<python_version>/ if the env var is set, otherwise ~/.flet/cache/python-build/v<python_version>/ — and use onlyIfModified true + useETag "all" so subsequent builds issue a conditional GET (If-None-Match / If-Modified-Since) against objects.githubusercontent.com instead of re-downloading 30–100 MB per ABI per build. When the upstream release republishes a tarball at the same URL (e.g. a Python patch update under the existing v<py> release), the validators flip and the cache refreshes automatically; otherwise the build skips the download entirely. tempAndMove true guards against partial downloads being kept in the cache (flet-dev/flet#6555, #208) by @FeodorFitsner.

Bug fixes

• Set PIP_REQUIRE_VIRTUALENV=false for pip install in the package command so packaging works in environments where users have globally exported PIP_REQUIRE_VIRTUALENV=true (#202, #204) by @FeodorFitsner.

• Breaking change: --platform argument value Pyodide has been renamed to Emscripten to match what platform.system() returns in the Pyodide runtime, so PEP 508 markers like platform_system != 'Emscripten' work consistently.

• Fix web packaging to skip site-packages when appropriate (#199).

• Disable user-site packages in pip environment (#195).

• Android: Add debug logs and deduplicate FFI imports.
• Android: Invalidate extracted assets when version keys change.

• Add zipDirectoryPosix to create POSIX-compliant app archives on Windows.
• Enforce C++20 standard for serious_python plugin build.
• Fix: Normalize WINDIR path for bundled DLLs in CMake.
• Fix Logcat logging crash on some Android devices.

• Fix logging on Android.

• Fix app restart on Android 10.
• Redirect Python output to logcat.

• Make zipDirectory call asynchronous.

• Bump archive to ^4.0.7.
• Fixed iOS framework identifier generation.

• 16 KB memory page support for Android 15+ (by @ReYaNOW).

• Fix: Hidden files in site-packages are skipped when building macOS app.
• Fix: Do not delete package metadata in .dist-info directories (#164).

• Breaking change: multiple --requirements options of package command must be passed as --requirements DEP_1 --requirements DEP_2 ... (or -r DEP_1 -r DEP_2 ...) instead of -r DEP_1,DEP_2,... to support dependency specifications with commas, e.g. pandas>=2.2,<3.
• Fix site-packages packaging for Pyodide platform.

• Fix serious_python to work on macOS 12 Monterey and built with Xcode 14.

• Set MinimumOSVersion to 13.0 for generated Python frameworks.
• iOS and macOS packaging: Python system libraries are put into python.bundle to pass App Store verification.
• On macOS, Windows, and Linux, application site packages are copied in an unpacked state to the application bundle to speed up the first launch.
• Pyodide 0.27.2
• Python 3.12.9
• Packaging --cleanup option replaced with two separate --cleanup-app and --cleanup-packages options.
• New packaging options --cleanup-app-files and --cleanup-package-files to specify a list of globs to exclude files and directories from app and site packages.
• New packaging --skip-site-packages option to skip site packages installation for faster re-builds.
• Packaging --arch option accepts a list now.

• Fixed: xcframeworks migration script didn't work for sub-directories.

• Added com.flet.serious_python_android.PythonActivity holder class with mActivity holding a reference to an app MainActivity. Needed for plyer.
• Android plugin sets MAIN_ACTIVITY_HOST_CLASS_NAME environment variable with the name of activity holder class name (com.flet.serious_python_android.PythonActivity).
• Android plugin sets MAIN_ACTIVITY_CLASS_NAME environment variable with a class name of an app MainActivity.
• Android plugin sets ANDROID_NATIVE_LIBRARY_DIR environment variable with the path to a directory containing app .so libraries. Needed for patching ctypes.find_library.
• Changed behavior of SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS environment variable that should contain a comma-separated list of packages to allow installation from source distribution.
• Fixed: iOS site-packages to xcframeworks migration script supports both library.so and library.{something}.so.

• Added Java loadLibrary to Android plugin to support pyjnius (#128).

• Copy site-packages/flutter contents to SERIOUS_PYTHON_FLUTTER_PACKAGES.
• Added SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS variable to allow pip installing from source distributions.

• Remove PYTHONOPTIMIZE=2 to make CFFI work.

• Copy .so libraries from {site-packages}/opt to jniLibs.

• Remove --only-binary when packaging for desktop platforms (#112)
• Fixed: only pass string args ('script') if they are not null. (#77)
• Fixed: script set as empty string to fix windows build error (#83)

• New packaging, not based on Kivy and with pre-built binary packages.

• Added namespace definition to Android Gradle build.
• Bump dependencies.

• --verbose flag - verbose output.
• --mobile flag - (removes .so) from app dest archive.
• --web flag for packaging for pyodide.
• --find-links option for installing pip dependencies from alternative sources (indexes).
• --dep-mappings for rewriting flet dependency to either flet-embed or flet-pyodide.
• --req-deps for adding required dependencies like flet-embed or flet-pyodide.
• --platform option for use with sitecustomize.py to tweak pip to pull platform-specific packages.
• More structured regular output.
• Bump deps versions.

• Simplified Python initialization on Android.

• Python 3.11.6.

• Bumping version after fixing pubspec.yaml.

• macOS, Windows and Linux support.

• Initial version.