Having not used any of the following I may be wrong here, but don't dataflow languages (eg Labview?) come close to this? https://en.wikipedia.org/wiki/Dataflo

Having not used any of the following I may be wrong here, but don't dataflow languages (eg Labview?) come close to this? https://en.wikipedia.org/wiki/Dataflow_programming https://en.wikipedia.org/wiki/Dataflow_programming And isn't GNU Radio effectively a domain-specific language for plugging signal processing elements together?