I have a web project that I'm trying to convert to Microsoft.NET.Sdk.Web. When I make the change to the .csproj file, though, it seems to force it to be interpreted as a <PackageReference>-based project. Of course, <PackageReference> isn't supported in web projects, because it doesn't support persisting the results of installing a package. Web projects must use packages.config in order to support NuGet packages that inject static content into the site's space (such as NewRelic). But, after switching to Microsoft.NET.Sdk.Web, the build system seems absolutely stuck on the project being <PackageReference>-based. How do I resolve this? Surely the very existence of Microsoft.NET.Sdk.Web implies that it is possible to use packages.config with an SDK project. But, even if I set <RestoreProjectStyle>Packages.config</RestoreProjectStyle>, it still thinks the project is <PackageReference>-based. I've seen advice to try running Update-Package -Reinstall after clearing out obj, bin and .vs, but nothing I've tried has convinced it that this is not a <PackageReference>-based project:
In Visual Studio, all of the NuGet-inserted references are lumped in with other references under Dependencies\Assemblies, and the "Installed" tab of the NuGet Package Manager is empty.
What do I do?