Weird require-dev value (__unset) in output of Drupal packages

This is by design. Metadata for Composer 2 is minified, since many releases of projects tend to have the same dependencies across versions. I believe this is saying that part of the metadata should be removed from what it is “diffing” from.

Our code for this is at https://git.drupalcode.org/project/project_composer/-/blob/7.x-1.x/proje...

And Composer’s implementation is https://github.com/composer/metadata-minifier. At some point, we should update the Composer version used internally and use this library instead.

Added that followup issue