Cannot install templates from a NuGet package on NET6

I have a pre-existing NuGet package containing templates for dotnet new.

On .NET 6 preview, installation of the templates fails with a “No templates were found in the package” error message. On .NET 5, installation works as expected.

.NET SDK (reflecting any global.json): Version: 6.0.100-rc.1.21463.6 Commit: e627d556a1

Host (useful for support): Version: 6.0.0-rc.1.21451.13 Commit: d7619cd4b1

when I run dotnet new -i CoStar.Neo.Templates.CSharp::1.15.0-net6support.2, I get the following output:

The following template packages will be installed: CoStar.Neo.Templates.CSharp::1.15.0-net6support.2

No templates were found in the package CoStar.Neo.Templates.CSharp::1.15.0-net6support.2

When I run the same thing on the .NET 5 SDK (via a global.json file) the templates install just fine.

Trying to think of how I can provide a repro for you… perhaps I should upload my NuPkgs?

[vlada-shubina]

We decided to close it as we won’t support NuGet dependencies for template packages in the near future. Please feel free to comment if you are blocked by this.

[ozziepeeps]

I have worked around this issue by flattening my templates into a top-level NuGet package (which works on NETCORE 3.1, NET5 and on the upcoming NET6), so I am no longer blocked by this. However, please feel free to leave the issue open if you feel like this is a regression (due to the behavioral change between NET5 and NET6)