macos

Implement matrix sharding #321

Job	Run time
generate-matrix	10s
pythonbuild	35s
aarch64-apple-darwin / 3.9 / debug	8s
aarch64-apple-darwin / 3.9 / pgo+lto	6s
aarch64-apple-darwin / 3.10 / debug	9s
aarch64-apple-darwin / 3.10 / pgo+lto	8s
aarch64-apple-darwin / 3.11 / debug	9s
aarch64-apple-darwin / 3.11 / pgo+lto	6s
aarch64-apple-darwin / 3.12 / debug	6s
aarch64-apple-darwin / 3.12 / pgo+lto	9s
aarch64-apple-darwin / 3.13 / debug	8s
aarch64-apple-darwin / 3.13 / pgo+lto	6s
aarch64-apple-darwin / 3.14 / debug	8s
aarch64-apple-darwin / 3.14 / pgo+lto	8s
aarch64-apple-darwin / 3.13 / freethreaded+debug	6s
aarch64-apple-darwin / 3.13 / freethreaded+pgo+lto	8s
aarch64-apple-darwin / 3.14 / freethreaded+debug	7s
aarch64-apple-darwin / 3.14 / freethreaded+pgo+lto	6s
x86_64-apple-darwin / 3.9 / debug	8s
x86_64-apple-darwin / 3.9 / pgo+lto	8s
x86_64-apple-darwin / 3.10 / debug	9s
x86_64-apple-darwin / 3.10 / pgo+lto	7s
x86_64-apple-darwin / 3.11 / debug	7s
x86_64-apple-darwin / 3.11 / pgo+lto	9s
x86_64-apple-darwin / 3.12 / debug	8s
x86_64-apple-darwin / 3.12 / pgo+lto	9s
x86_64-apple-darwin / 3.13 / debug	9s
x86_64-apple-darwin / 3.13 / pgo+lto	8s
x86_64-apple-darwin / 3.14 / debug	9s
x86_64-apple-darwin / 3.14 / pgo+lto	5s
x86_64-apple-darwin / 3.13 / freethreaded+debug	7s
x86_64-apple-darwin / 3.13 / freethreaded+pgo+lto	7s
x86_64-apple-darwin / 3.14 / freethreaded+debug	7s
x86_64-apple-darwin / 3.14 / freethreaded+pgo+lto	9s
	4m 49s

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