osobhandClaude Opus 5
a29c1b224b
Every Python interop suite had stopped running on this machine: the h5py writer round-trips, the facade suite, netCDF4 and the reference files. `python3` is 3.14, nothing on the box has h5py, and PEP 668 refuses to install it into a system interpreter at all — so the availability probes all returned false and each suite skipped without failing. A silent skip here is exactly how the v5 compound-datatype bug reached a release, so the probes now read `CLAWHDF5_PYTHON` and `ci-test.sh` picks up `.venv/bin/python` on its own. The detection sits at the top of the script rather than beside the interop step, because the non-ignored suites run in the earlier `cargo test` step and would otherwise still miss it. `CLAWHDF5_REQUIRE_INTEROP=1` continues to turn a skip into a failure. Verified against a venv with h5py 3.16 / HDF5 2.0.0: 94 interop tests across the four suites, all passing. Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
clawhdf5-format
Pure-Rust HDF5 binary format parsing and writing — no C dependencies.
Features
- Zero-copy superblock, object header, and B-tree parsing
- Chunked dataset read/write with filter pipelines
no_stdsupport (disablestdfeature)- Optional parallel reads via Rayon
- SHA-256 provenance tracking
Usage
use clawhdf5_format::Superblock;
let data = std::fs::read("data.h5").unwrap();
let sb = Superblock::from_bytes(&data).unwrap();
println!("HDF5 version {}.{}", sb.version_major(), sb.version_minor());
License
MIT