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Adds a cibuildwheel-based riscv64 build for vapoursynth R81 (meson-python, Cython), mirroring the linux leg of upstream's own build.yml. Upstream's meson.build already has explicit riscv64 handling (VS_TARGET_CPU_RISCV, x86/arm SIMD paths disabled off that arch), so nothing riscv-specific needed patching there. Splits into a cp312-abi3 build (meson-python's limited-api) and a separate cp314t free-threaded build, following the same shape as build-bcrypt.yml. Includes a licensing patch widening the explicit license-files list to cover the four statically-linked meson-wrap subprojects (glslang, Vulkan-Headers, libp2p, zimg), whose notices the workflow stages from their own upstream repos. Signed-off-by: Ludovic Henry <git@ludovic.dev>
luhenry
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October 16, 2026 00:02
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vapoursynth81Compiles the VapourSynth frameserver core (meson-python + Cython), a native video-processing/filtering library used in transcoding pipelines, distinct from the already-published av/decord/pyav bindings. Upstream publishes no riscv64 wheel.
Mirrors the
linux_x86_64/linux_aarch64legs of upstream'sbuild.yml, narrowed to the riscv64 image. meson.build already special-casesriscv(disables x86/ARM SIMD paths, definesVS_TARGET_CPU_RISCV), so nothing riscv-specific needed patching there.Differs from upstream
cp312-abi3build plus a separatecp314tbuild (meson-python's own override disables limited-api for free-threaded); upstream's build list namescp315t, absent from the riscv64 image, socp314tis substituted (gotcha 11 shape).Testing: same as upstream (
unittest discover), inherited from[tool.cibuildwheel.linux].License: four meson-wrap subprojects (glslang, Vulkan-Headers, libp2p, zimg) are statically linked but their licences aren't in the checkout; the patch widens the explicit
license-fileslist, and the workflow stages each from its own upstream repo (glslang/Vulkan-Headers pinned to the wrap's tag; libp2p/zimg's wraps pinrevision = HEAD, so those two come from the default branch, matching upstream's own lack of pinning).Patches
0001-Ship-the-statically-embedded-subprojects-licences-in.patch- To upstream. Adds the missing subproject licences; reproduces on any arch, not riscv64-specific.Built locally (x86_64): patch applies cleanly to a fresh R81 checkout; no cibuildwheel run (no docker/riscv64 available in this sandbox).