This is exactly where I've found it can be helpful as well.
At a prior job we created extremely large, complicated CloudFormation templates in JSON that could have been made much simpler with Jsonnet and the ability to do comprehension and some other tricks to keep it DRY. A coworker ended up writing a bunch of Python scripts to templatize the CF templates (ugh).
At my current job we ended up using Jsonnet as a configuration language for Apache Aurora jobs [1], which was also helpful when trying to make it easy for others to pick it up and create their own jobs from base templates.
That being said, it can be frustrating to get going with and for some cases I do find myself having to trace through things very carefully in order to to figure out exactly what's going on.
At a prior job we created extremely large, complicated CloudFormation templates in JSON that could have been made much simpler with Jsonnet and the ability to do comprehension and some other tricks to keep it DRY. A coworker ended up writing a bunch of Python scripts to templatize the CF templates (ugh).
At my current job we ended up using Jsonnet as a configuration language for Apache Aurora jobs [1], which was also helpful when trying to make it easy for others to pick it up and create their own jobs from base templates.
That being said, it can be frustrating to get going with and for some cases I do find myself having to trace through things very carefully in order to to figure out exactly what's going on.
[1] https://github.com/benley/aurora-jsonnet