uv venv --seed installs + upgrades setuptools, pip, and wheel, which implies that its purpose is to facilitate distribution package creation. The recent distribution-packaging overhaul over the past few years in the Python world makes build also a critical package. Would you consider adding it to the --seed set?

https://packaging.python.org/en/latest/tutorials/packaging-projects/#generating-distribution-archives