FeodorFitsner · Oct 17, 2026 · Oct 16, 2026 · Oct 17, 2026 · Oct 17, 2026
diff --git a/src/serious_python/CHANGELOG.md b/src/serious_python/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 6.0.0
+
+* **Breaking (iOS/macOS):** the minimum supported OS is now **iOS 15.0** and **macOS 12.0** (was iOS 13.0 / macOS 11.0), the lowest deployment targets Xcode 27 accepts. Apps must set `platform :ios, '15.0'` / `platform :osx, '12.0'` in their Podfiles and the matching `IPHONEOS_DEPLOYMENT_TARGET` / `MACOSX_DEPLOYMENT_TARGET`. See `serious_python_darwin` 6.0.0 ([#254](https://github.com/flet-dev/serious-python/issues/254)).
+* **Packaging (iOS):** the `package` command targets the `ios-15.0-*` wheel platform tags. Wheels tagged for older iOS versions, such as `ios_13_0`, are still accepted ([#254](https://github.com/flet-dev/serious-python/issues/254)).
+* Update the bundled CPython to **3.12.15 / 3.13.16 / 3.14.8** ([python-build#46](https://github.com/flet-dev/python-build/pull/46)).
+
 ## 5.0.0
 
 * **Breaking (`package` command):** `--exclude`, `--cleanup-app-files` and `--cleanup-package-files` no longer split their values on commas, so paths containing `,` and brace globs such as `**/{tests,docs}` can be passed. Previously a hidden file named `.a,main.py` passed to `--exclude` became two exclusions, dropping `main.py`, and `**/{tests,docs}` was split into two broken globs. Pass each value as its own option: `--exclude build --exclude tests` instead of `--exclude build,tests`. A comma-separated value is now matched as a single path, so an unmigrated command packages the files it used to exclude without failing. The Dart API and runtime are unchanged. `flet build` pins serious_python exactly, so existing Flet releases are unaffected ([#253](https://github.com/flet-dev/serious-python/pull/253), [flet#6839](https://github.com/flet-dev/flet/issues/6839)).

diff --git a/src/serious_python/README.md b/src/serious_python/README.md
@@ -24,9 +24,9 @@ is specified.
 
 | Short | CPython runtime | Pyodide (web) | Pyodide wheel platform tag       |
 | ----- | --------------- | ------------- | -------------------------------- |
-| 3.12  | 3.12.14         | 0.27.7        | `pyodide-2024.0-wasm32`           |
-| 3.13  | 3.13.15         | 0.29.4        | `pyemscripten-2025.0-wasm32`      |
-| 3.14  | 3.14.7          | 314.0.6       | `pyemscripten-2026.0-wasm32`      |
+| 3.12  | 3.12.15         | 0.27.8        | `pyodide-2024.0-wasm32`           |
+| 3.13  | 3.13.16         | 0.29.5        | `pyemscripten-2025.0-wasm32`      |
+| 3.14  | 3.14.8          | 314.0.7       | `pyemscripten-2026.0-wasm32`      |
 
 The default is the latest stable row (currently **3.14**) when neither
 `--python-version` nor `SERIOUS_PYTHON_VERSION` is set. When running through
@@ -57,11 +57,11 @@ Import Serious Python package into your app:
 
 `import 'package:serious_python/serious_python.dart';`
 
-The plugin is built against iOS 13.0, so you might need to update iOS version in `ios/Podfile`:
+The plugin is built against iOS 15.0, so you might need to update iOS version in `ios/Podfile`:
 
 ```bash
 # Uncomment this line to define a global platform for your project
-platform :ios, '13.0'
+platform :ios, '15.0'
 ```
 
 Package your Python app with the CLI (see [Packaging Python app](#packaging-python-app) below). Its sources are placed **unpacked inside the app bundle**, next to the Python stdlib and site-packages — on Android they ship as a *stored* `app.zip` asset inside the APK and are unpacked once on first launch. Then run it:
@@ -370,19 +370,19 @@ The following matrix shows which platform you should build on to target specific
 
 ### macOS
 
-macOS 11.0 (Big Sur) is the minimal supported version of macOS (the bundled
-`Python.framework` requires 11.0).
+macOS 12.0 (Monterey) is the minimal supported version of macOS (the bundled
+`Python.framework` requires 12.0).
 
 You have to update your Flutter app's `macos/Podfile` to have this line at the very top:
 
 ```ruby
-platform :osx, '11.0'
+platform :osx, '12.0'
 ```
 
 Also, make sure `macos/Runner.xcodeproj/project.pbxproj` contains:
 
 ```objc
-MACOSX_DEPLOYMENT_TARGET = 11.0;
+MACOSX_DEPLOYMENT_TARGET = 12.0;
 ```
 
 ### Android

diff --git a/src/serious_python/bin/package_command.dart b/src/serious_python/bin/package_command.dart
@@ -51,13 +51,13 @@ const spmKeyFileEnvironmentVariable = "SERIOUS_PYTHON_SPM_KEY_FILE";
 
 const platforms = {
   "iOS": {
-    "iphoneos.arm64": {"tag": "ios-13.0-arm64-iphoneos", "mac_ver": ""},
+    "iphoneos.arm64": {"tag": "ios-15.0-arm64-iphoneos", "mac_ver": ""},
     "iphonesimulator.arm64": {
-      "tag": "ios-13.0-arm64-iphonesimulator",
+      "tag": "ios-15.0-arm64-iphonesimulator",
       "mac_ver": ""
     },
     "iphonesimulator.x86_64": {
-      "tag": "ios-13.0-x86_64-iphonesimulator",
+      "tag": "ios-15.0-x86_64-iphonesimulator",
       "mac_ver": ""
     }
   },

diff --git a/src/serious_python/example/bridge_example/ios/Podfile b/src/serious_python/example/bridge_example/ios/Podfile
@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-# platform :ios, '13.0'
+# platform :ios, '15.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

diff --git a/src/serious_python/example/bridge_example/ios/Podfile.lock b/src/serious_python/example/bridge_example/ios/Podfile.lock
@@ -11,6 +11,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
 
-PODFILE CHECKSUM: 3c63482e143d1b91d2d2560aee9fb04ecc74ac7e
+PODFILE CHECKSUM: 3ba3a73b1b12adcf321a227a745625fe0888cc82
 
 COCOAPODS: 1.14.3
diff --git a/src/serious_python/example/bridge_example/ios/Runner.xcodeproj/project.pbxproj b/src/serious_python/example/bridge_example/ios/Runner.xcodeproj/project.pbxproj
@@ -451,7 +451,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -580,7 +580,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -631,7 +631,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;

diff --git a/src/serious_python/example/bridge_example/macos/Podfile b/src/serious_python/example/bridge_example/macos/Podfile
@@ -1,4 +1,4 @@
-platform :osx, '11.0'
+platform :osx, '12.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

diff --git a/src/serious_python/example/bridge_example/macos/Podfile.lock b/src/serious_python/example/bridge_example/macos/Podfile.lock
@@ -11,6 +11,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
 
-PODFILE CHECKSUM: 346bfb2deb41d4a6ebd6f6799f92188bde2d246f
+PODFILE CHECKSUM: 1e95c36afbfd1cb6423ceca4de7a8e1b256fb6ac
 
 COCOAPODS: 1.14.3
diff --git a/src/serious_python/example/bridge_example/macos/Runner.xcodeproj/project.pbxproj b/src/serious_python/example/bridge_example/macos/Runner.xcodeproj/project.pbxproj
@@ -549,7 +549,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -631,7 +631,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -681,7 +681,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;

diff --git a/src/serious_python/example/bridge_example/pubspec.yaml b/src/serious_python/example/bridge_example/pubspec.yaml
@@ -24,14 +24,5 @@ dev_dependencies:
     sdk: flutter
   flutter_lints: ^2.0.0
 
-# jni arrives transitively (path_provider -> path_provider_android ->
-# jni_flutter -> jni). 1.0.1 added global_jni_env.c, which passes a `va_list`
-# where a `void *` is expected: fine on x86_64, where va_list is an array type
-# that decays to a pointer, but a hard error on aarch64, where it's a struct.
-# That breaks `flutter build linux` on ARM64 hosts. Tracked upstream at
-# dart-lang/native#3498 — drop this override once a fixed jni is released.
-dependency_overrides:
-  jni: 1.0.0
-
 flutter:
   uses-material-design: true
diff --git a/src/serious_python/example/flask_example/ios/Podfile b/src/serious_python/example/flask_example/ios/Podfile
@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-# platform :ios, '13.0'
+# platform :ios, '15.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

diff --git a/src/serious_python/example/flask_example/ios/Podfile.lock b/src/serious_python/example/flask_example/ios/Podfile.lock
@@ -18,6 +18,6 @@ SPEC CHECKSUMS:
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
   serious_python_darwin: 4858dfeb2d3d99e30a645bc25851c8f702db1890
 
-PODFILE CHECKSUM: 4f1c12611da7338d21589c0b2ecd6bd20b109694
+PODFILE CHECKSUM: 0e525152e3ec397947996fbf92d176f885bd8b2a
 
 COCOAPODS: 1.14.3
diff --git a/src/serious_python/example/flask_example/ios/Runner.xcodeproj/project.pbxproj b/src/serious_python/example/flask_example/ios/Runner.xcodeproj/project.pbxproj
@@ -477,7 +477,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -606,7 +606,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -657,7 +657,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;

diff --git a/src/serious_python/example/flask_example/macos/Podfile b/src/serious_python/example/flask_example/macos/Podfile
@@ -1,4 +1,4 @@
-platform :osx, '11.0'
+platform :osx, '12.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

diff --git a/src/serious_python/example/flask_example/macos/Podfile.lock b/src/serious_python/example/flask_example/macos/Podfile.lock
@@ -11,6 +11,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
 
-PODFILE CHECKSUM: c2e95c8c0fe03c5c57e438583cae4cc732296009
+PODFILE CHECKSUM: f0c21717cb7ee9112f915044c74bfceb5b12e02a
 
 COCOAPODS: 1.14.3
diff --git a/src/serious_python/example/flask_example/macos/Runner.xcodeproj/project.pbxproj b/src/serious_python/example/flask_example/macos/Runner.xcodeproj/project.pbxproj
@@ -549,7 +549,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -631,7 +631,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -681,7 +681,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;

diff --git a/src/serious_python/example/flask_example/pubspec.lock b/src/serious_python/example/flask_example/pubspec.lock
@@ -156,21 +156,29 @@ packages:
     source: hosted
     version: "4.1.2"
   jni:
-    dependency: "direct overridden"
+    dependency: transitive
     description:
       name: jni
-      sha256: c2230682d5bc2362c1c9e8d3c7f406d9cbba23ab3f2e203a025dd47e0fb2e68f
+      sha256: "6b9ca0602fef0230e83149afbe3f9f8227e94f2bbe84a1da4f14d699742f402d"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0"
   jni_flutter:
     dependency: transitive
     description:
       name: jni_flutter
-      sha256: "8b59e590786050b1cd866677dddaf76b1ade5e7bc751abe04b86e84d379d3ba6"
+      sha256: "0dd33d67797560f66e961a6053882d4df54bd345bf063b8fe7ea133f7ad8b191"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4+1"
+  jni_util:
+    dependency: transitive
+    description:
+      name: jni_util
+      sha256: "1ba86da04a5f2bf18fde2edb235587e70c5b0fc5bd4ba955f46b00942c3fc35f"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.0"
   leak_tracker:
     dependency: transitive
     description:
@@ -361,42 +369,42 @@ packages:
       path: "../.."
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   serious_python_android:
     dependency: transitive
     description:
       path: "../../../serious_python_android"
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   serious_python_darwin:
     dependency: transitive
     description:
       path: "../../../serious_python_darwin"
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   serious_python_linux:
     dependency: transitive
     description:
       path: "../../../serious_python_linux"
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   serious_python_platform_interface:
     dependency: transitive
     description:
       path: "../../../serious_python_platform_interface"
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   serious_python_windows:
     dependency: transitive
     description:
       path: "../../../serious_python_windows"
       relative: true
     source: path
-    version: "5.0.0"
+    version: "6.0.0"
   shelf:
     dependency: transitive
     description:

diff --git a/src/serious_python/example/flask_example/pubspec.yaml b/src/serious_python/example/flask_example/pubspec.yaml
@@ -56,15 +56,6 @@ dev_dependencies:
 # following page: https://dart.dev/tools/pub/pubspec
 
 # The following section is specific to Flutter packages.
-# jni arrives transitively (path_provider -> path_provider_android ->
-# jni_flutter -> jni). 1.0.1 added global_jni_env.c, which passes a `va_list`
-# where a `void *` is expected: fine on x86_64, where va_list is an array type
-# that decays to a pointer, but a hard error on aarch64, where it's a struct.
-# That breaks `flutter build linux` on ARM64 hosts. Tracked upstream at
-# dart-lang/native#3498 — drop this override once a fixed jni is released.
-dependency_overrides:
-  jni: 1.0.0
-
 flutter:
 
   # The following line ensures that the Material Icons font is

diff --git a/src/serious_python/example/run_example/ios/Podfile b/src/serious_python/example/run_example/ios/Podfile
@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-# platform :ios, '13.0'
+# platform :ios, '15.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

diff --git a/src/serious_python/example/run_example/ios/Podfile.lock b/src/serious_python/example/run_example/ios/Podfile.lock
@@ -11,6 +11,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
 
-PODFILE CHECKSUM: 4f1c12611da7338d21589c0b2ecd6bd20b109694
+PODFILE CHECKSUM: 0e525152e3ec397947996fbf92d176f885bd8b2a
 
 COCOAPODS: 1.14.3