I was playing around with the Microsoft.Data.Sqlite package after this pull request: aspnet/Microsoft.Data.Sqlite#100

The nupkg looks something like tihs:

• Microsoft.Data.Sqlite
  • lib
    • dotnet
      • Microsoft.Data.Sqlite.dll
  • runtimes
    • win
      • native
        • x86
          • sqlite3.dll
        • x64
          • sqlite3.dll
    • (other RIDs)

I was trying to consume the package in a Full .NET AnyCPU project. (e.g. a WPF, WinForms, or Console app)

In theory, both the x86 and x64 directories (i.e. everything under runtimes/win/native) should be copied to the bin folder. The managed library could then call LoadLibrary(Path.Combine(bin, arch, "sqlite3.dll")); to load the appropriate library. Unfortunately, the directory structure isn't preserved. Both dlls are copied directly into the bin folder--one over top of the other.

I created a new Console app, added a project.json, and tried to install the package, but it gave the following error. It looks like instead of just using win for AnyCPU projects, it's trying to use win-anycpu.

C:\Program Files (x86)\MSBuild\Microsoft\NuGet\Microsoft.NuGet.targets(76,5): error : Couldn't find the required information in the lock file. Make sure you have .NETFramework,Version=v4.6/win-anycpu mentioned in your targets.

I was able to resolve this using the following project.json file.

{
  "frameworks": {
    "net46": { }
  },
  "runtimes": {
    "win": { },
    "win-anycpu": {
      "#import": [ "win" ]
    }
  },
  "dependencies": {
    "Microsoft.Data.Sqlite": "1.0.0-*"
  }
}

/cc @rowanmiller @divega