> it uses pyproject.toml which is what Poetry uses and seems to be the standard people are moving to Yes, PEP 517 is standard now. But, that's not actually a b

> it uses pyproject.toml which is what Poetry uses and seems to be the standard people are moving to Yes, PEP 517 is standard now. But, that's not actually a build system and depending on how you configure it, the actual contents can differ wildly. While build-system.build-backend is standard, how one actually configures that backend in tools.<your-build-tool> are not standard at all. It's more proper to think of it as a standard meta-format for build system configuration. There is effectively no real portability between build/project tools except in the most absolutely trivial cases.