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cysignals is a pure-POSIX Cython/C extension for signal handling (sigaltstack/sigprocmask/setjmp); the only architecture-conditioned code paths are an x86-only FPU-reset instruction (feature-probed, becomes a no-op elsewhere) and a Cygwin+x86_64-only Windows exception shim, neither required on Linux. Debian already builds and installs the package on riscv64. Build-from-checkout with meson-python; overrides only CIBW_BUILD_FRONTEND (upstream's build[uv] frontend crashes cibuildwheel's audit step on our self-hosted runner, which has no host uv).
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cysignals1.12.6Cython/C extension providing safe interrupt and signal handling (SIGSEGV/SIGFPE/SIGALRM trapping via
sigaltstack) for other Cython libraries, notably SageMath. Upstream publishes no riscv64 wheel.Mirrors upstream's
dist.ymlbuild_wheelsjob (meson-python, build-from-checkout).Differs from upstream
CIBW_BUILD_FRONTEND: build- upstream'sbuild[uv]frontend crashes cibuildwheel's audit step on our self-hosted runner, which has no hostuv.Testing
License: OK
Built on cp312; CI running.