Is it possible to define rules for the

./pants tailor

command? Like, I have

.vue

and

.js

files, and I want those directories to be populated with

BUILD

as well

Yes, you implement a rule that returns

PutativeTargets

from a union type of

PutativeTargetsRequest

. See the docker backend for example: https://github.com/pantsbuild/pants/blob/main/src/python/pants/backend/docker/goals/tailor.py

neat