Pulp currently gives us a 400 error if we attempt to upload a package that already exists. We are in conversations about how pulp could handle this better (check the slack thread below) but in the meantime we need to handle this ourselves.

options

1. change "collect-build-files" to not include anything that was in wheels-repo/prebuilt
2. change "build-wheels" to remove anything from wheels-repo/downloads that is also in wheels-repo/prebuilt
3. before twine uploading in "pulp-upload", query pulp to see if it exists yet (pip? requests?)

Slack Thread