NuGet Package Restore cannot find package, has no Source

Question

I have a package on my TeamCity NuGet feed, built by TeamCity, but a dependent TC project cannot see it during package restore.

[14:05:02][Exec] E:\TeamCity-BuildAgent\work\62023563850993a7\Web.nuget\nuget.targets(88, 9): Unable to find version '1.0.17.0' of package 'MarkLogicManager40'.

[14:05:02][Exec] E:\TeamCity-BuildAgent\work\62023563850993a7\Web.nuget\nuget.targets(88, 9): error MSB3073: The command ""E:\TeamCity-BuildAgent\work\62023563850993a7\Web.nuget\nuget.exe" install "E:\TeamCity-BuildAgent\work\62023563850993a7\ProductMvc\packages.config" -source "" -RequireConsent -solutionDir "E:\TeamCity-BuildAgent\work\62023563850993a7\Web\ "" exited with code 1.

Note that the source parameter in the NuGet command line is empty. Could this be the cause?

Answer 1

As of today, NuGet.targets has the following way to specify custom feed(s):

<ItemGroup Condition=" '$(PackageSources)' == '' ">
    <!-- Package sources used to restore packages. By default, registered sources under %APPDATA%\NuGet\NuGet.Config will be used -->
    <!-- The official NuGet package source (https://nuget.org/api/v2/) will be excluded if package sources are specified and it does not appear in the list -->

    <PackageSource Include="https://nuget.org/api/v2/" />
    <PackageSource Include="\\MyShare" />
    <PackageSource Include="http://MyServer/" />
</ItemGroup>

Another option is to put NuGet.config next to the solution file:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
    <add key="MyShare" value="\\MyShare" />
    <add key="MyServer" value="http://MyServer" />
  </packageSources>
  <activePackageSource>
    <add key="All" value="(Aggregate source)"  />
  </activePackageSource>
</configuration>