Is there any way to code pipelines in other languages than python? Like go or scala?

@stale-crayon-83563 Not currently: plugins have to be pip packages, which limits them to Python. We have an issue outstanding to support arbitrary Docker containers but it's not prioritized or implemented yet: https://gitlab.com/meltano/meltano/-/issues/2205 If this is important to you, please weigh in there with your use case!

@ripe-musician-59933 since you're connected to airflow, would I just code some other language ETL external to this framework and just hook it into the same airflow? Or would it have to be a different airflow?

Yeah, you can use the embedded Airflow however you please, with as many custom DAGs in

./orchestrate/dags

as yoy like