ci: Build on macOS 14 (ARM) runners #141
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- build-system.requires: pyntcore~=2025.2 - build-system.requires: robotpy-hal~=2025.2 - build-system.requires: robotpy-wpimath~=2025.2 - build-system.requires: robotpy-wpinet~=2025.2 - build-system.requires: robotpy-wpiutil~=2025.2 - build-system.requires: wpilib~=2025.2
ld: warning: object file (build/temp.macosx-15.0-arm64-cpython-313/dlstatic/cscore_cpp/lib/libcscore.a[arm64][21](cscore_cpp.o)) was built for newer 'macOS' version (13.3) than being linked (13.0)
Enables building universal2 wheels for Python 3.9 and 3.10.
We're busting the cache, so let's switch to a cache backend with less aggressive cache eviction.
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Building on GitHub Actions macOS ARM runners lets us build universal2 wheels for Python 3.9 and 3.10 for free. This is particularly important since the Xcode Command Line Tools still ships Python 3.9. The fact that our macOS 3.9 and 3.10 wheels are currently amd64 only has come up a few times in Chief Delphi threads and caused confusion both for teams and ourselves.
Building on macOS ARM also gives us an almost 2x build performance boost. An uncached universal2 build takes 1 h on x86, whereas it takes about 35 min on Apple Silicon.
As this change completely busts the cache, this also switches our macOS builds to use sccache with WPILib's Artifactory as storage, like in #125.
Whilst we're busting the cache, also fix the linker warning about the mismatching macOS target version.