Testing if Dart can load packages from a gist

.packages

pkga:pkga_
pkgb:pkgb_

main.dart

import 'package:pkga/pkga.dart' as pkga;
import 'package:pkgb/pkgb.dart' as pkgb;

void main() {
  pkga.foo();
  pkgb.foo();
}

pkga_pkga.dart

void foo() => print("Hello from package A");

pkgb_pkgb.dart

void foo() => print("Hello from package B!");