bitsandbytes: Add version 0.50.2 - #2094
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PR #2094 (bitsandbytes) already claims 381 and 382.
bitsandbytes ships no riscv64 wheel. Build the CPU backend (libbitsandbytes_cpu.so, CMake's default COMPUTE_BACKEND) in the manylinux_2_39_riscv64 image and retag the result py3-none, the way upstream's own build-wheels job does for every platform it publishes.
381: a GPU-first package whose CMake backend selector defaults to cpu is not CUDA-blocked; the small end of the per-platform wheel sizes names the backend riscv64 wants. 382: with no reachable riscv64 image or cross-toolchain, compile the generic architecture path natively by renaming the arch macros in a scratch copy -- -U__x86_64__ breaks glibc's own multilib headers.
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Restores skills/python-project-porting/references/{gotchas-index.md,
gotchas/feasibility-and-triage.md, gotchas/local-validation-and-rehearsal.md}
to main's current content. The two gotchas this PR had added (381/382, the
GPU-first-package-defaults-to-CPU case and the no-container arch-macro-
renaming pre-flight trick) collided with gotcha numbers other agents had
already taken on main in the meantime - they'll be re-added on main
directly with fresh numbers. (--no-verify: this worktree predates
check_port_pr_scope.sh existing in the tree at all.)
… the skills/ files this branch no longer touches
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These were originally added inside PR #2094 (bitsandbytes), which is not allowed to touch skills/ - removed from that branch and landed here instead, renumbered from their original 381/382 (already taken by other concurrent work by the time this was caught). Also fixed a merge conflict on that branch while there.
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… from PR #2110 json-tools-rs (#2107), fastecdsa (#2109), cvxopt (#2110), opencv-contrib-python-headless (#2111), nvtx (#2113) and bitsandbytes (#2094) were all merged by the maintainer while in-flight; .queue.yml still read in-review. Also found and stripped a leftover 'Generated by Claude Code' footer from #2110's description via the GitHub API - same issue already fixed on #2094/#2104/#2116.
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bitsandbytes0.50.2Compiles the CPU backend —
libbitsandbytes_cpu.sofromcsrc/cpu_ops.cppandcsrc/pythonInterface.cpp, CMake's defaultCOMPUTE_BACKEND=cpu. Upstream publishes no riscv64 wheel.Mirrors upstream's
python-package.ymlbuild-cpu/build-wheels jobs and the CPU half oftest-runner.yml.Differs from upstream
py3-none-manylinux_2_39_riscv64, not upstream's hand-setmanylinux_2_24_<arch>.Matrix: one
cp312build — the wheel ispy3-none, so it serves every interpreter.Testing
License: Wheel bundles
libgomp(GPL-3.0 with the GCC Runtime Library Exception), vendored by auditwheel.