Proper method for preventing default inheritance

[natefoo]

From Matrix:

@nuwang

There's no way currently to stop it from inherting the default I believe. So you could try setting env: [] explicitly on _conda_local, but that may or may not work

@natefoo

Yeah, things are working as I have them now (by making the upload and data source tools have their own rule on the default tool) but it does seem like some way to prevent the default inheritance would be ideal.

@nuwang

Looking at the code, setting inherits to an empty string may work
But yeah, we should probably add that if not

I can confirm that setting inherits to an empty string does indeed work, but as discussed, a proper method (YAML null?) would be preferable.

[natefoo]

I spoke too soon about the empty string working, I just didn't notice in my initial testing since the tools I tested with have scheduling tags that prevent them from running on destinations with Singularity params set, but other things from the default tool rules like the container_override are still being set.