Hi, I'm a new developer for Xamarin.Forms.
Last night, I've created new Xamarin.Forms app with Android only.
It was builded successfully on first time, but after I added 'Combinatorics' package, the build is broken.
Belows are logged errors.
CSC : error CS1703: Multiple assemblies with equivalent identity have been imported: 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\mscorlib.dll' and 'C:\Users\User\.nuget\packages\microsoft.netcore.portable.compatibility\1.0.1\ref\netstandard1.0\mscorlib.dll'. Remove one of the duplicate references.
And related on this error, there are many errors like
Resources/Resource.designer.cs(12,36): error CS0731: The type forwarder for type 'System.Attribute' in assembly 'System.Runtime' causes a cycle
and
Resources/Resource.designer.cs(409,17): error CS0518: Predefined type 'System.Int32' is not defined or imported
'Combinatorics' package depends on 'Microsoft.NETCore.Portable.Compatibility' and I can't remove this dependency.
Is there any solution for this?
Attached file is repro of this issue and here is my environment.
Microsoft Visual Studio Professional 2017
Version 15.5.7
VisualStudio.15.Release/15.5.7+27130.2036
Microsoft .NET Framework
Version 4.7.02556
Visual C# 2017 00370-20007-76118-AA391
Merq 1.1.17-rc (cba4571)
Mono Debugging for Visual Studio 4.8.4-pre (3fe64e3)
NuGet Package Manager 4.5.0
VisualStudio.Mac 1.0
Mac Extension for Visual Studio
Xamarin 4.8.0.760 (fc93f3f5b)
Xamarin.iOS と Xamarin.Android の開発を有効にする Visual Studio 拡張機能
Xamarin Designer 4.8.188 (c5813fa34)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.
Xamarin.Android SDK 8.1.5.0 (HEAD/75f8c6838)
Xamarin.Android Reference Assemblies and MSBuild support.
Xamarin.iOS and Xamarin.Mac SDK 11.6.1.4 (db807ec)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.
ユニバーサル Windows アプリ用 Visual Studio Tools 15.0.27130.2036
ユニバーサル Windows アプリ用 Visual Studio Tools を使用すると、電話、タブレット、PC など、Windows 10 を実行している各デバイスで使用できるユニバーサル アプリの単一ビルドを利用できます。これには Microsoft Windows 10 ソフトウェア開発キットが含まれています。
Please help!