Copy flutter from site packages (#122)

* Copy `site-packages/flutter` contents to `SERIOUS_PYTHON_FLUTTER_PACKAGES`

* Version bumped to 0.8.4

* Added `SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS` variable

Author: FeodorFitsner

src/serious_python/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.8.4
+
+* Copy `site-packages/flutter` contents to `SERIOUS_PYTHON_FLUTTER_PACKAGES`.
+* Added `SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS` variable to allow pip installing from source distributions.
+
 ## 0.8.3
 
 * Remove `PYTHONOPTIMIZE=2` to make CFFI work.

src/serious_python/bin/package_command.dart

@@ -19,7 +19,11 @@ const pyodideLockFile = "pyodide-lock.json";
 const buildPythonVersion = "3.12.6";
 const buildPythonReleaseDate = "20240909";
 const defaultSitePackagesDir = "__pypackages__";
-const sitePackageEnvironmentVariable = "SERIOUS_PYTHON_SITE_PACKAGES";
+const sitePackagesEnvironmentVariable = "SERIOUS_PYTHON_SITE_PACKAGES";
+const flutterPackagesFlutterEnvironmentVariable =
+    "SERIOUS_PYTHON_FLUTTER_PACKAGES";
+const allowSourceDistrosEnvironmentVariable =
+    "SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS";
 
 const platforms = {
   "iOS": {
@@ -227,6 +231,7 @@ class PackageCommand extends Command {
       if (requirements.isNotEmpty) {
         String? sitePackagesRoot;
         bool sitePackagesRootDeleted = false;
+        bool flutterPackagesCopied = false;
         // invoke pip for every platform arch
         for (var arch in platforms[platform]!.entries) {
           if (archArg != null && arch.key != archArg) {
@@ -266,13 +271,13 @@ class PackageCommand extends Command {
 
             if (isMobile) {
               if (!Platform.environment
-                  .containsKey(sitePackageEnvironmentVariable)) {
-                throw "Environment variable is not set: $sitePackageEnvironmentVariable";
+                  .containsKey(sitePackagesEnvironmentVariable)) {
+                throw "Environment variable is not set: $sitePackagesEnvironmentVariable";
               }
               sitePackagesRoot =
-                  Platform.environment[sitePackageEnvironmentVariable];
+                  Platform.environment[sitePackagesEnvironmentVariable];
               if (sitePackagesRoot!.isEmpty) {
-                throw "Environment variable cannot be empty: $sitePackageEnvironmentVariable";
+                throw "Environment variable cannot be empty: $sitePackagesEnvironmentVariable";
               }
             } else {
               sitePackagesRoot =
@@ -298,7 +303,9 @@ class PackageCommand extends Command {
 
             List<String> pipArgs = ["--disable-pip-version-check"];
 
-            if (isMobile || isWeb) {
+            if ((isMobile || isWeb) &&
+                !Platform.environment
+                    .containsKey(allowSourceDistrosEnvironmentVariable)) {
               pipArgs.addAll(["--only-binary", ":all:"]);
             }
 
@@ -317,6 +324,29 @@ class PackageCommand extends Command {
               ...requirements
             ], environment: pipEnv);
 
+            // move $sitePackagesDir/flutter if env var is defined
+            if (Platform.environment
+                .containsKey(flutterPackagesFlutterEnvironmentVariable)) {
+              var flutterPackagesRoot = Platform
+                  .environment[flutterPackagesFlutterEnvironmentVariable];
+              var flutterPackagesRootDir = Directory(flutterPackagesRoot!);
+              var sitePackagesFlutterDir =
+                  Directory(path.join(sitePackagesDir, "flutter"));
+              if (await sitePackagesFlutterDir.exists()) {
+                if (!flutterPackagesCopied) {
+                  stdout.writeln(
+                      "Copying Flutter packages to $flutterPackagesRoot");
+                  if (!await flutterPackagesRootDir.exists()) {
+                    await flutterPackagesRootDir.create(recursive: true);
+                  }
+                  await copyDirectory(sitePackagesFlutterDir,
+                      flutterPackagesRootDir, sitePackagesFlutterDir.path, []);
+                  flutterPackagesCopied = true;
+                }
+                await sitePackagesFlutterDir.delete(recursive: true);
+              }
+            }
+
             // compile packages
             if (compilePackages) {
               stdout.writeln("Compiling app packages at $sitePackagesDir");

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: 0.8.3
+version: 0.8.4
 
 platforms:
   ios:

src/serious_python_android/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.8.4
+
+* Copy `site-packages/flutter` contents to `SERIOUS_PYTHON_FLUTTER_PACKAGES`.
+* Added `SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS` variable to allow pip installing from source distributions.
+
 ## 0.8.3
 
 * Remove `PYTHONOPTIMIZE=2` to make CFFI work.

src/serious_python_android/android/build.gradle

@@ -1,5 +1,5 @@
 group 'com.flet.serious_python_android'
-version '0.8.3'
+version '0.8.4'
 
 def python_version = '3.12'
 

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: 0.8.3
+version: 0.8.4
 
 environment:
   sdk: ">=3.0.0 <4.0.0"

src/serious_python_darwin/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.8.4
+
+* Copy `site-packages/flutter` contents to `SERIOUS_PYTHON_FLUTTER_PACKAGES`.
+* Added `SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS` variable to allow pip installing from source distributions.
+
 ## 0.8.3
 
 * Remove `PYTHONOPTIMIZE=2` to make CFFI work.

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          = '0.8.3'
+  s.version          = '0.8.4'
   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.

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: 0.8.3
+version: 0.8.4
 
 environment:
   sdk: ">=3.0.0 <4.0.0"

src/serious_python_linux/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.8.4
+
+* Copy `site-packages/flutter` contents to `SERIOUS_PYTHON_FLUTTER_PACKAGES`.
+* Added `SERIOUS_PYTHON_ALLOW_SOURCE_DISTRIBUTIONS` variable to allow pip installing from source distributions.
+
 ## 0.8.3
 
 * Remove `PYTHONOPTIMIZE=2` to make CFFI work.