Fixed sdk

pubspec.lock

@@ -286,13 +286,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.6.2"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.4.0"
   petitparser:
     dependency: transitive
     description:
@@ -381,7 +374,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.4"
+    version: "1.4.1"
   stack_trace:
     dependency: transitive
     description:
@@ -409,28 +402,28 @@ packages:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.0.1"
   test:
     dependency: "direct dev"
     description:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.3"
+    version: "1.5.1+1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2"
+    version: "0.2.1"
   test_core:
     dependency: transitive
     description:
       name: test_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1+1"
+    version: "0.2.0+1"
   typed_data:
     dependency: transitive
     description:
@@ -488,5 +481,5 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.1.0 <3.0.0"
+  dart: ">=2.1.0-dev.5.0 <3.0.0"
   flutter: ">=0.1.4 <2.0.0"

pubspec.yaml

@@ -4,7 +4,7 @@ description: Vikunja as Flutter cross platform app
 version: 0.1.0
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.0.0-dev.68.0 <3.0.0"
 
 dependencies:
   flutter: