May I ask a history question? How did pants come to use the term "targets" for primary sources? This is causing some Abbot & Costello style communication issues on my team (coming from Make style tools) sometimes.

Loosely from here: https://ant.apache.org/manual/targets.html Pants is Python Ants. Originally a Python script that generated many ant build xmls and then executed them to build Java and Scala code.