Directory.Build.targets

<Project>
  <Target Name="ValidateJellyfinProfile" BeforeTargets="Restore;Build">
    <Error
      Condition="'$(JellyfinPackageVersion)' == ''"
      Text="Unsupported JellyfinProfile '$(JellyfinProfile)'. Add it to Directory.Build.props or pass JellyfinPackageVersion and JellyfinTargetAbi explicitly." />
  </Target>
</Project>