自定义NuGet程序包产生“无法加载文件或程序集System.Runtime，版本= 4.2.0.0”

Question

Project_A.csproj：

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net461</TargetFramework>
  </PropertyGroup>

</Project>  

Project_A取决于Project_B。这就是Project_B.csproj的样子（我被迫使其与net461和netcoreapp2.0兼容）：

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFrameworks>net461;netcoreapp2.0</TargetFrameworks>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Dapper" Version="1.50.4" />
    <PackageReference Include="SharpCompress" Version="0.16.2" />
    <PackageReference Include="System.Xml.XmlSerializer" Version="4.3.0" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="Properties\" />
  </ItemGroup>

</Project>

---

如果我将Project_B打包为nuget软件包，然后将其添加到Project_A，则在调试中运行Project_A时会遇到以下异常：

System.IO.FileLoadException: 'Could not load file or assembly 'System.Runtime, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)'

here列出的所有可能的解决方案似乎都不适合我。

但是，如果我通过代码添加完全相同的Project_B（作为对Project_A的“项目”引用），则不会有任何错误。

---

这些是nuget软件包设置（使用Cake构建）：

var nugetPackageSettings = new NuGetPackSettings
{
    Id = config["packageName"],
    Version = versionNumberStr,
    Title = config["packageName"],
    Authors = new[] { "Myself },
    Owners = new[] { "TheCompany" },
    Description = "Blah blah",      
    Copyright = $"TheCompany {DateTime.Now.Year}",
    RequireLicenseAcceptance = false,
    Symbols = true,
    IncludeReferencedProjects = true,
    NoPackageAnalysis = true,
    BasePath = "./",
    Files = context.GetAllDllFiles((string[])config["dlls"], (string)config["artifactsFolder"]),
    Dependencies = context.GetAllNuSpecDependencies((string[])config["csprojs"]),
    OutputDirectory = config["tmpNugetOutputDirectory"]
};

...

settings.Add("framework", "net461");
settings.Add("packageName", "MyProject");   

...

Task("Build")
    .IsDependentOn("NuGetRestore")
    .IsDependentOn("Clean")
    .Does(() =>
    {
        // Settings:
        var framework = (string)settings["framework"];
        var configuration = (string)settings["configuration"];
        var artifactsFolder = (string)settings["artifactsFolder"];

        var targetProjectFile = (string)settings["targetProjectFile"];

        // Process:
        var dotnetCoreBuildSettings = new DotNetCoreBuildSettings()
        {
            Framework = framework,
            Configuration = configuration,
            OutputDirectory = artifactsFolder
        };
        DotNetCoreBuild(targetProjectFile, dotnetCoreBuildSettings);
    });