dotnet core on Ubuntu Linux using asp.net MVC and EF MySQL error NU1001: cannot restore MySql.Data.EntityFrameworkCore

Question

I've built a simple, flat dotnet core MVC app that I'd like to see running on Linux. It uses EF to pull a few records from a mysql table and display them in a view. It all builds and runs on my host (Win10) but will not in the Ubuntu VM I've spun up to test with

After I do a "dotnet restore", I get the following error with "dotnet build" or "dotnet run":

Project CoreCrossPlatformFlat (.NETCoreApp,Version=v1.0) will be compiled because the version or bitness of the CLI changed since the last build Compiling CoreCrossPlatformFlat for .NETCoreApp,Version=v1.0 /opt/dotnet/corecrossplatform/src/CoreCrossPlatformFlat/project.json(25,52): error NU1001: The dependency MySql.Data.EntityFrameworkCore >= 7.0.4-IR-191 could not be resolved.

Compilation failed. 0 Warning(s) 1 Error(s)

FYI: Here's what "dotnet --info" reports:

.NET Command Line Tools (1.0.0-preview2-003121)

Product Information: Version: 1.0.0-preview2-003121 Commit SHA-1 hash: 1e9d529bc5

Runtime Environment: OS Name: ubuntu OS Version: 16.04 OS Platform: Linux RID: ubuntu.16.04-x64

For the VM, I followed these instructions:

https://www.microsoft.com/net/core#ubuntu

The project.json looks like so:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0",
    "Microsoft.EntityFrameworkCore": "1.0.0",
    "MySql.Data.Core": "7.0.4-IR-191",
    "MySql.Data.EntityFrameworkCore": "7.0.4-IR-191"
  },

  "tools": {
    "BundlerMinifier.Core": "2.0.238",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

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

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

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

  "scripts": {
    "prepublish": [ "bower install", "dotnet bundle" ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

Here's a zip of the solution if that helps: https://s3.amazonaws.com/kilonova-public/code/CoreCrossPlatformFlat.zip

@NateBarbettini - Yes...sorry I hadn't mentioned it. Error remains the same. — Tsar Bomba
– Tsar Bomba, Commented Sep 5, 2016 at 21:49
Maybe worth noting: Was able to use the MySql.Data.Core to write some basic ADO.NET code, which successfully ran on the Ubuntu VM. At this point I'm unsure if there's just a problem restoring the EF package or it's just not ready for Linux? — Tsar Bomba
– Tsar Bomba, Commented Sep 6, 2016 at 11:05
FWIW, I restored those packages fine on macOS. Do you have the latest version of the .NET CLI tooling? What does dotnet --info say? — Nate Barbettini
– Nate Barbettini, Commented Sep 6, 2016 at 15:01

Student222 · Accepted Answer · 2016-09-25 21:02:09Z

0

Encountered the same problem today. Please try deleting all files and folders except the project.json file and all the .cs files in your project folder. Then dotnet restore and dotnet run. It works for me. : )

answered Sep 25, 2016 at 21:02

Student222

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