(I work on uv.)

Can you say more? uv should always tell you if a wheel build fails, unless the build backend (which uv doesn’t control, unless you use uv’s own backend) decides to silently ignore a wheel build. This would be a bug in any given build backend IMO.

This is an unfortunate complexity in Python packaging: something like `uv build` can dispatch a wheel build for you, but the actual code that gets run as part of that build is often third-party build backend code that uv itself has little to no control over.

We get UV to generate a requirements.txt and then use the Python and Pip which is available on the official Microsoft container images we use for Azure container apps once it hits production. I've never had any issues with the build system in development though.

Can you name some example and explain what happens, that the user is left without indication of failures? I am asking, because I have not had such issues yet, but maybe I just don't know I had them?