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liteparse is a PyO3/maturin abi3-py310 extension that dlopen()s a libpdfium.so bundled next to it. Upstream downloads that library from run-llama/pdfium-binaries (a PDFium fork adding extra FPDF* APIs the extension requires), which publishes no linux-riscv64 asset. Build it with the fork's own recipe at the release liteparse pins (read from crates/pdfium-sys/build.rs), cross-compiled from x64 with target_cpu=riscv64 exactly as the fork does for linux-arm64, then build the wheel natively on riscv64 with upstream's maturin-action job and run upstream's test-wheels checks against it.
luhenry
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The pdfium build stopped at `gn gen`: PDFium's forked skia/BUILD.gn asserts "Unsupported target CPU riscv64" in skia_opts, reached through the root BUILD.gn's gn_check group (//skia is a dep whenever checkout_skia is set, as it is for checkout_configuration=small) even though pdf_use_skia is false. Carry the empty riscv64 branch Chromium's own skia/BUILD.gn already has, applied to the gclient checkout right after pdfium-binaries' own patches.
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liteparse2.14.2A PyO3 abi3 extension (with tesseract/leptonica statically linked) that loads a bundled libpdfium.so. Upstream publishes no riscv64 wheel.
Mirrors upstream's
release-python.yml, and run-llama/pdfium-binaries'build.ymlfor libpdfium.Differs from upstream
riscv64- the fork publishes no linux-riscv64 assetMatrix: one cp310-abi3 wheel, as upstream ships; tested on cp312.
Testing
License: Wheel bundles PDFium (BSD-3-Clause, plus its FreeType/libjpeg-turbo/libpng/ICU/Abseil/zlib notices), tesseract (Apache-2.0) and leptonica (BSD-2-Clause); upstream ships no licence text for them, so the build adds it.