I'm unable to run

./pants check ::

, it keeps trying to resolve the constraints forever. I use a private pypi, and the env variable

PANTS_PYTHON_REPOS_INDEXES

. Besides that I don't do anything else. What am I missing?

if you use

--no-process-execution-local-cleanup

and then change into the sandbox directory, you can try running it in the foreground with more verbose output with

__run.sh

what is the "sandbox directory"?

sorry: that flag will log lines about the sandboxes that it preserves: see https://www.pantsbuild.org/docs/troubleshooting#debug-tip-inspect-the-sandbox-with---no-process-execution-local-cleanup