[path_provider_linux] Migrate to nnbd

packages/path_provider/path_provider_linux/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.2.0-nullsafety.0
+
+* Migrate to null-safety
+
 ## 0.1.1+3
 
 * Update Flutter SDK constraint.

packages/path_provider/path_provider_linux/example/pubspec.yaml

@@ -9,16 +9,13 @@ dependencies:
   flutter:
     sdk: flutter
 
-  path_provider: ^1.6.10
+  path_provider:
+    path: ../../path_provider
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.3
 
-dependency_overrides:
-  path_provider_linux:
-    path: ../
-
 dev_dependencies:
   flutter_test:
     sdk: flutter

packages/path_provider/path_provider_linux/lib/path_provider_linux.dart

@@ -36,11 +36,11 @@ class PathProviderLinux extends PathProviderPlatform {
 
   @override
   Future<String> getApplicationDocumentsPath() {
-    return Future.value(xdg.getUserDirectory('DOCUMENTS').path);
+    return Future.value(xdg.getUserDirectory('DOCUMENTS')!.path);
   }
 
   @override
   Future<String> getDownloadsPath() {
-    return Future.value(xdg.getUserDirectory('DOWNLOAD').path);
+    return Future.value(xdg.getUserDirectory('DOWNLOAD')!.path);
   }
 }

packages/path_provider/path_provider_linux/pubspec.yaml

@@ -1,6 +1,6 @@
 name: path_provider_linux
 description: linux implementation of the path_provider plugin
-version: 0.1.1+3
+version: 0.2.0-nullsafety.0
 homepage: https://github.com/flutter/plugins/tree/master/packages/path_provider/path_provider_linux
 
 flutter:
@@ -11,13 +11,13 @@ flutter:
         pluginClass: none
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: '>=2.12.0-0 <3.0.0'
   flutter: ">=1.10.0"
 
 dependencies:
   path: ^1.6.4
-  xdg_directories: ^0.1.0
-  path_provider_platform_interface: ^1.0.1
+  xdg_directories: ^0.2.0-nullsafety.0
+  path_provider_platform_interface: ^2.0.0-nullsafety
   flutter:
     sdk: flutter