I'm trying to understand if I understand source roots correctly. Here's my project structure: root |--- projA |----------setup.py |----------src/projA |---------------------main.py |---------------------example.json |----------tests |---------------unit/ |---------------integration/ For this, I have the following source roots:

[source]
root_patterns = [
    "/",
    "src/",
    "tests/",
]

Now this works. Going forward, there'll be projB, projC added with a similar structure. Now when I try to run something, e.g.

pants test projA/tests::

. it runs fine. However, if I remove the

/

root patterns, running the same gets me

No source root for projA

. With this setup, do I need those three root patterns? Is there a better approach?

Sorry for the trouble. We'll be able to help you better if you can create a reduced reproducer, e.g. just one project with one file in

src/projA

and one in

tests/

.