uv-platform-tags

crates/uv-platform-tags/ parses and derives PEP 425 platform tags — the strings that identify which wheels can run on which Pythons.

Purpose

Compute the compatible tag set for a given interpreter. A wheel is installable if its (python_tag, abi_tag, platform_tag) triple is in that set. The compatibility ordering matters too: cp312-cp312-manylinux_2_28_x86_64 is preferred over cp312-cp312-manylinux2014_x86_64 even though both run.

Key abstractions

• Tags — the compatible tag set with priority.
• IncompatibleTag — a reason a wheel was rejected.
• Helpers for inferring tags from Python's sysconfig, plus glibc/musl version detection on Linux, macOS deployment-target handling, and Windows arch tags.

See also

• uv-python provides the interpreter inputs.
• uv-distribution-filename parses the tag strings off filenames.
• uv-installer consumes the priority order during install planning.