See discussion here: #1848 (comment)

This abstraction is there so you can execute the same build operations using different implementations, e.g. compiling a native file with gcc vs. clang. The word worker here might be a little confusing, since we also have the concept of "workers" (threads/processes) in the same area of our code base. Maybe something closer to the word "Tool" would be better.

What about using Tool then? We already have a Tool interface in native, which is describing how to call an external tools (args etc.).

Maybe ExecutableTool?