A metadata implementation designed around a per-package (not per-dist) index of variants
The intent here is to provide a working implementation of the scheme proposed by Oscar Benjamin.
That proposal incorporates a centralized metadata file describing available variants, like
# python-flint-0.6.0-wheel-selector.toml
[wheel-selector]
variables = ["x86_64_version"]
[selector.x86_64_version]
requires = ["cpuversion >= 1.0"]
function = ["cpuversion:get_x86_64_psABI_version"]
wheel_tags = {
x86-64 = [""],
x86-64-v2 = [""],
x86-64-v3 = ["x86_64_v3", ""],
x86-64-v4 = ["x86_64_v4", "x86_64_v3", ""],
}
This metadata captures the notion of a metadata provider tool with the spec:
requires = ["cpuversion >= 1.0"]
function = ["cpuversion:get_x86_64_psABI_version"]
Dists with variants are delineated with suffixes to the platform tag:
python_flint-0.6.0-cp312-cp312-win_amd64+x86_64_v3.whl
python_flint-0.6.0-cp312-cp312-win_amd64.whl
