Use current python interpreter to run builder

[cidrblock]

Rather than rely on builder being in the PATH, use the python interpreter that spawned the ade process.

This was encountered when installing ade as a uv tool, since builder was not in the current PATH, although it was installed in the ade venv.

[nitzmahone]

Does it have to be the script entrypoint? If you don't mind invoking it with something like $python_in_question -m, you can just do it blindly for invocation or consult that python's distribution metadata to definitively tell that it's installed before trying to invoke it.

[cidrblock]

Does it have to be the script entrypoint? If you don't mind invoking it with something like $python_in_question -m, you can just do it blindly for invocation or consult that python's distribution metadata to definitively tell that it's installed before trying to invoke it.

Brilliant. I hadn't even considered -m.... assuming this would work, I can probable skip the subproccess all together and runpy it :) Let me see how it looks

[cidrblock]

Closed in favor of #306