Package install fails on .NET Core project in VS2017 RC

[bkoelman]

Repro steps:

• Install VS 2017 RC with Web/Cloud workload
• Create a new ASP.NET Core application (MVC)
• From the package manager console: install-package jetbrains.externalannotations

Actual:

install-package : Package JetBrains.ExternalAnnotations 10.2.3 is not compatible with netcoreapp1.0 (.NETCoreApp,Version=v1.0). Package JetBrains.ExternalAnnotations 10.2.3 supports: net (.NETFramework,Version=v0.0)
At line:1 char:1
+ install-package jetbrains.externalannotations
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

install-package : One or more packages are incompatible with .NETCoreApp,Version=v1.0.
At line:1 char:1
+ install-package jetbrains.externalannotations
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

install-package : Package restore failed. Rolling back package changes for 'CoreWebApplication1'.
At line:1 char:1
+ install-package jetbrains.externalannotations
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

Expected: successful installation.

[derigel23]

@bkoelman this package is not supposed to be installed in regular projects. I assume you are looking for this package https://www.nuget.org/packages/JetBrains.Annotations

[bkoelman]

No I mean to install this package. I've written an analyzer that parses these external annotations. Normally they are taken from the Resharper installation directory. But it is used on build servers that do not have Resharper installed. See https://github.com/bkoelman/ResharperCodeContractNullability/, last paragraph.

[bkoelman]

Works great, thanks!