Can't get the analyzer working

[macon]

I've built this package locally and added as a project reference to my project but I don't see any red warning highlighting (like in your screenshot). I'm using Rider:

JetBrains Rider 2023.3.4
Build #RD-233.14475.66, built on March 6, 2024

Is there something I need to do to get analyzers to run automatically?

Here is my csproj and code example:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net8.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="NullableReferenceTypes.StrictMode.0.0.0-alpha.nupkg" Version="0.0.0" />
  </ItemGroup>

</Project>

[macon]

I eventually got it working by adding this to .csroj

  <ItemGroup>
    <Analyzer Include="/Users/XXX/git/NullableReferenceTypes.StrictMode/NullableReferenceTypes.StrictMode/bin/Release/netstandard2.0/NullableReferenceTypes.StrictMode.dll" Version="0.0.0" />
  </ItemGroup>

Is there an easier way to add this (e.g. consuming the nupkg directly?)