var yaml = File.ReadAllText("pubspec.yaml");
var pubspec = PubSpec.Deserialize(yaml);

Console.WriteLine($"Name: {pubspec.Name}");
Console.WriteLine($"Version: {pubspec.Version}");

var deserializer = new DeserializerBuilder()
    .IgnoreUnmatchedProperties()                                // pub.dev will ignore other properties
    .WithNamingConvention(UnderscoredNamingConvention.Instance) // dart uses underscores for properties
    .WithPubSpecConverters()                                    // converters for custom types
    .Build();

return deserializer.Deserialize<PubSpec>(reader);