This was due to the schema changes in winget and the fact that there's now a built-in winget-create mechanism to create YAML files.
If there's interest, I can update this project to work with the new schema...
Simple GUI editor for creating YAML files for Windows Package Manager. Very bare-bones, but it does the job to get you started.
The app is also available in the Microsoft Store.
Because when winget was announced to our team (internally), someone said "I don't want to write YAML; can you make it easy?" and it also happened to be that person's birthday. So as a joke I made them a birthday present.
Then someone said "you should publish this" so here we are.
These are other projects that help build Windows Package Manager manifests. Appearing in this list is not an endorsement, no warranties, etc.