flet-dev · FeodorFitsner · Jul 12, 2026 · Jul 12, 2026
diff --git a/src/serious_python/CHANGELOG.md b/src/serious_python/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 4.3.2
+
+* Bump the bundled python-build snapshot to `20260712`, fixing two on-device startup crashes affecting Python **3.13/3.14** apps (3.12 is unaffected). Bundled Python versions (**3.12.13 / 3.13.14 / 3.14.6**) and `dart_bridge` (**1.5.0**) are unchanged from 4.3.1.
+* **Android:** fix 3.13/3.14 apps crashing with `SIGSYS` before any app code runs on x86_64 (and other ABIs with a 32-bit-style `SYS_open`) — mimalloc's raw `open(2)` syscall is forbidden by Android's seccomp policy. See `serious_python_android` 4.3.2.
+* **iOS/Android:** `_pyrepl` is no longer pruned from the mobile stdlib — Python 3.14's `pdb` imports it at module load, so anything importing `pdb` (e.g. pytest's debugging plugin) failed with `ModuleNotFoundError: No module named '_pyrepl'`. See `serious_python_darwin` / `serious_python_android` 4.3.2.
+
 ## 4.3.1
 
 * **Android:** fix `flet build apk --arch x86_64` (or any `--arch` subset not including `arm64-v8a`) producing an APK with an **empty `sitepackages.zip`** — the app shipped without its Python dependencies and the first import failed at startup. See `serious_python_android` 4.3.1.

diff --git a/src/serious_python/lib/src/python_versions.dart b/src/serious_python/lib/src/python_versions.dart
@@ -1,5 +1,5 @@
 // GENERATED by `dart run serious_python:gen_version_tables` from python-build's
-// manifest.json (release 20260708). Do not edit by hand — edit python-build's
+// manifest.json (release 20260712). Do not edit by hand — edit python-build's
 // manifest.json, cut a release, bump `pythonReleaseDate`, and regenerate.
 
 const pythonVersionEnvironmentVariable = "SERIOUS_PYTHON_VERSION";
@@ -10,7 +10,7 @@ const pyodideVersionEnvironmentVariable = "SERIOUS_PYTHON_PYODIDE_VERSION";
 const dartBridgeVersionEnvironmentVariable = "DART_BRIDGE_VERSION";
 
 /// python-build release the bundled runtimes come from (YYYYMMDD).
-const pythonReleaseDate = "20260708";
+const pythonReleaseDate = "20260712";
 const dartBridgeVersion = "1.5.0";
 const defaultPythonVersion = "3.14";
 

diff --git a/src/serious_python/pubspec.yaml b/src/serious_python/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python
 description: A cross-platform plugin for adding embedded Python runtime to your Flutter apps.
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 platforms:
   ios:

diff --git a/src/serious_python_android/CHANGELOG.md b/src/serious_python_android/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 4.3.2
+
+* Bump the bundled python-build snapshot to `20260712`, fixing two on-device crashes on Python **3.13/3.14** (3.12 is unaffected; Python/`dart_bridge` versions are unchanged):
+  * Apps died with `SIGSYS` at `dlopen()` of `libpython` — before the interpreter even started — on **x86_64/x86/armeabi-v7a**: mimalloc (bundled with CPython since 3.13) reads `/proc/sys/vm/overcommit_memory` during allocator init via a bare `open(2)` syscall, which Android's bionic seccomp policy forbids (only `openat(2)` is allowed). python-build now patches the call to `SYS_openat(AT_FDCWD, …)`. `arm64-v8a` was latently unaffected (no `SYS_open` there, so mimalloc already went through libc `open()` → `openat`), but emulators are typically x86_64.
+  * `_pyrepl` is no longer pruned from the bundled stdlib: Python 3.14's `pdb` imports it at module load, so anything importing `pdb` (e.g. pytest's debugging plugin) died with `ModuleNotFoundError: No module named '_pyrepl'`.
+
 ## 4.3.1
 
 * Fix `flet build apk --arch <abi>` shipping an **empty `sitepackages.zip`** whenever the selected ABI subset didn't include `arm64-v8a` (e.g. `--arch x86_64`) — the app bundled no Python site-packages at all and the very first dependency import failed at startup. The ABI-common pure-code zips (`sitepackages.zip` / `extract.zip`) were built from a hardcoded primary ABI (`abis.first()`, i.e. `arm64-v8a`); when only other ABIs were staged under `SERIOUS_PYTHON_SITE_PACKAGES`, the primary split task walked a nonexistent directory and silently produced a valid-but-empty zip. The primary ABI is now the first manifest ABI whose site-packages tree was actually staged. If none is staged at all (legitimate when packaging with no requirements), the build falls back to `abis.first()` and logs `sitepackages.zip will be empty` instead of staying silent.

diff --git a/src/serious_python_android/android/build.gradle.kts b/src/serious_python_android/android/build.gradle.kts
@@ -21,7 +21,7 @@ buildscript {
 }
 
 group = "com.flet.serious_python_android"
-version = "4.3.1"
+version = "4.3.2"
 
 rootProject.allprojects {
     repositories {

diff --git a/src/serious_python_android/android/python_versions.properties b/src/serious_python_android/android/python_versions.properties
@@ -1,8 +1,8 @@
 # GENERATED by `dart run serious_python:gen_version_tables` from
-# python-build manifest.json (release 20260708). Do not edit by hand.
+# python-build manifest.json (release 20260712). Do not edit by hand.
 default_python_version=3.14
 dart_bridge_version=1.5.0
-python_build_release_date=20260708
+python_build_release_date=20260712
 3.12.full_version=3.12.13
 3.12.android_abis=arm64-v8a,x86_64,armeabi-v7a
 3.13.full_version=3.13.14

diff --git a/src/serious_python_android/pubspec.yaml b/src/serious_python_android/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python_android
 description: Android implementation of the serious_python plugin
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 environment:
   sdk: ">=3.0.0 <4.0.0"

diff --git a/src/serious_python_darwin/CHANGELOG.md b/src/serious_python_darwin/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.3.2
+
+* Bump the bundled python-build snapshot to `20260712`: `_pyrepl` is no longer pruned from the bundled stdlib. Python **3.14**'s `pdb` imports `_pyrepl` at module load, so anything importing `pdb` (e.g. pytest's debugging plugin) died with `ModuleNotFoundError: No module named '_pyrepl'` on iOS (3.13's `pdb` doesn't import it). Python/`dart_bridge` versions are unchanged.
+
 ## 4.3.1
 
 * Version bump aligning with the `serious_python_*` 4.3.1 release.

diff --git a/src/serious_python_darwin/darwin/python_versions.properties b/src/serious_python_darwin/darwin/python_versions.properties
@@ -1,8 +1,8 @@
 # GENERATED by `dart run serious_python:gen_version_tables` from
-# python-build manifest.json (release 20260708). Do not edit by hand.
+# python-build manifest.json (release 20260712). Do not edit by hand.
 default_python_version=3.14
 dart_bridge_version=1.5.0
-python_build_release_date=20260708
+python_build_release_date=20260712
 3.12.full_version=3.12.13
 3.12.android_abis=arm64-v8a,x86_64,armeabi-v7a
 3.13.full_version=3.13.14

diff --git a/src/serious_python_darwin/darwin/serious_python_darwin.podspec b/src/serious_python_darwin/darwin/serious_python_darwin.podspec
@@ -4,7 +4,7 @@
 #
 Pod::Spec.new do |s|
   s.name             = 'serious_python_darwin'
-  s.version          = '4.3.1'
+  s.version          = '4.3.2'
   s.summary          = 'A cross-platform plugin for adding embedded Python runtime to your Flutter apps.'
   s.description      = <<-DESC
   A cross-platform plugin for adding embedded Python runtime to your Flutter apps.

diff --git a/src/serious_python_darwin/pubspec.yaml b/src/serious_python_darwin/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python_darwin
 description: iOS and macOS implementations of the serious_python plugin
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 environment:
   # The Swift Package Manager build path needs Flutter 3.44 / Dart 3.11 (the

diff --git a/src/serious_python_linux/CHANGELOG.md b/src/serious_python_linux/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.3.2
+
+* Bump the bundled python-build snapshot to `20260712`; aligns with the `serious_python_*` 4.3.2 release. The release contains only Android/iOS runtime fixes — no Linux-affecting changes.
+
 ## 4.3.1
 
 * Version bump aligning with the `serious_python_*` 4.3.1 release.

diff --git a/src/serious_python_linux/linux/python_versions.properties b/src/serious_python_linux/linux/python_versions.properties
@@ -1,8 +1,8 @@
 # GENERATED by `dart run serious_python:gen_version_tables` from
-# python-build manifest.json (release 20260708). Do not edit by hand.
+# python-build manifest.json (release 20260712). Do not edit by hand.
 default_python_version=3.14
 dart_bridge_version=1.5.0
-python_build_release_date=20260708
+python_build_release_date=20260712
 3.12.full_version=3.12.13
 3.12.android_abis=arm64-v8a,x86_64,armeabi-v7a
 3.13.full_version=3.13.14

diff --git a/src/serious_python_linux/pubspec.yaml b/src/serious_python_linux/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python_linux
 description: Linux implementations of the serious_python plugin
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 environment:
   sdk: '>=3.1.3 <4.0.0'

diff --git a/src/serious_python_platform_interface/CHANGELOG.md b/src/serious_python_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.3.2
+
+* Version bump aligning with the `serious_python_*` 4.3.2 release.
+
 ## 4.3.1
 
 * Version bump aligning with the `serious_python_*` 4.3.1 release.

diff --git a/src/serious_python_platform_interface/pubspec.yaml b/src/serious_python_platform_interface/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python_platform_interface
 description: A common platform interface for the serious_python plugin.
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 environment:
   sdk: ">=3.0.0 <4.0.0"

diff --git a/src/serious_python_windows/CHANGELOG.md b/src/serious_python_windows/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.3.2
+
+* Bump the bundled python-build snapshot to `20260712`; aligns with the `serious_python_*` 4.3.2 release. The release contains only Android/iOS runtime fixes — no Windows-affecting changes.
+
 ## 4.3.1
 
 * Version bump aligning with the `serious_python_*` 4.3.1 release.

diff --git a/src/serious_python_windows/pubspec.yaml b/src/serious_python_windows/pubspec.yaml
@@ -2,7 +2,7 @@ name: serious_python_windows
 description: Windows implementations of the serious_python plugin
 homepage: https://flet.dev
 repository: https://github.com/flet-dev/serious-python
-version: 4.3.1
+version: 4.3.2
 
 environment:
   sdk: '>=3.1.3 <4.0.0'

diff --git a/src/serious_python_windows/windows/python_versions.properties b/src/serious_python_windows/windows/python_versions.properties
@@ -1,8 +1,8 @@
 # GENERATED by `dart run serious_python:gen_version_tables` from
-# python-build manifest.json (release 20260708). Do not edit by hand.
+# python-build manifest.json (release 20260712). Do not edit by hand.
 default_python_version=3.14
 dart_bridge_version=1.5.0
-python_build_release_date=20260708
+python_build_release_date=20260712
 3.12.full_version=3.12.13
 3.12.android_abis=arm64-v8a,x86_64,armeabi-v7a
 3.13.full_version=3.13.14