Migrating an existing application that is

/src/<prod code>
/tests/test_<test-foo>.py
      /sub-tests/test_<other-foo>.py
      /util/utility_for_tests.py
/req.txt
/req..-test.txt

I am struggling to get the paths and source includes in the BUILD files correct I have currently

/BUILD
/src/BUILD
/tests/BUILD