efcore: EF Tools 1.1.0-preview4 Unrecognized option '--config'

Notes by @rowanmiller

This affects just the 1.1.0-preview4 tools on apps that target full .NET (rather than .NET Core). I have not been able to find a way to workaround this with the latest tools preview.

The best option right now is to roll back to the 1.0.0-preview3 version of the Microsoft.EntityFrameworkCore.Tools.DotNet package. Fortunately, because of the way things are factored, you can keep using the 1.1 versions of all the other packages.

  "tools": {
    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.0.0-preview3-final"
  },

---

Steps to reproduce

1. Upgrade nuget packages from v1.0.1 to v1.1.0.
2. Use ‘dotnet ef’ to generate migrations
3. Error: Unrecognized option ‘–config’

I’ve tried to delete the older SDK and runtime, but it doesn’t solve the problem.

The issue

It’s not possible to generate migrations with v1.1.0. The website is building and running successfully.

Further technical details

EF Core version: 1.1.0 Operating system: Windows 10 Visual Studio version: VS2015

My project.json:

{
  "dependencies": {
    "TinyMapper": "2.0.8",
    "Hangfire.Dashboard.Authorization": "2.1.0",
    "Hangfire": "1.6.6",
    "Hangfire.SqlServer": "1.6.6",
    "Microsoft.AspNetCore.Authentication.JwtBearer": "1.1.0",
    "Microsoft.AspNetCore.Diagnostics": "1.1.0",
    "Microsoft.AspNetCore.Mvc": "1.1.0",
    "Microsoft.AspNetCore.Owin": "1.1.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.1.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.1.0",
    "Microsoft.AspNetCore.StaticFiles": "1.1.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.1.0",
    "Microsoft.Extensions.Configuration.Json": "1.1.0",
    "Microsoft.Extensions.DependencyInjection": "1.1.0",
    "Microsoft.Extensions.DependencyInjection.Abstractions": "1.1.0",
    "Microsoft.Extensions.Logging": "1.1.0",
    "Microsoft.Extensions.Logging.Console": "1.1.0",
    "Microsoft.Extensions.Logging.Debug": "1.1.0",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0",
    "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.1.0",
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.1.0-preview4-final",
      "type": "build"
    }
  },

  "tools": {
    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.1.0-preview4-final"
  },

  "frameworks": {
    "net461": {}
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "Areas/**/Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}