安装Visual Studio 2017 RC打破了dotnet核心1.0.1？

Question

I can no longer build projects that are using .net core 1.0.1, once I install Visual Studio 2017 RC, so it's not as "side by side" as we might have hoped.

When I build I get this error:

D:\dev\app >dotnet build
Microsoft (R) Build Engine version 15.1.0.0
Copyright (C) Microsoft Corporation. All rights reserved.

Build started 11/28/2016 10:35:13 AM.
     1>Project "D:\dev\...\app.xproj" on node 1 (Build target(s)).
     1>D:\dev\..\app.xproj(7,3): error MSB4019: The imported project "C:\Program Files\dotnet\sdk\1.0.0-preview3-004056\Extensions\Microsoft\VisualStudio\v14.0\DotNet\Microsoft.DotNet.Props" was 
not found. Confirm that the path in the <Import> declaration is correct, and 
that the file exists on disk.
     1>Done Building Project "D:\dev\...\app.xproj" (Build target(s)) -- FAILED.

Build FAILED.

Update: I have documented a workaround in the comments, but if there's a way to get both preview3 and preview2 tooling to work "side by side" that's what this question is asking.

Answer 1

The proper way to make sure the right .net core tools gets used is a file called global.json in your solution dir that should reference your desired tools:

{
  "projects": [ "src", "test" ],
  "sdk": {
    "version": "1.0.0-preview2-003121"
  }
}