Issues

Decompress/compress output buffer growth via _PyBytes_Resize causes avoidable copies and heap-layout-dependent performance
pycompression/python-isal#256 · opened on Sep 7, 2026
10
macOS arm64 wheel ships only ISA-L base functions (no NEON/PMULL assembly), ~5x slower than the manylinux aarch64 wheel on the same CPU
pycompression/python-isal#254 · opened on Jul 16, 2026
6
New ISA-L release
pycompression/python-isal#253 · opened on Jun 16, 2026
2
arm64 is also a supported platform
pycompression/python-isal#252 · opened on Jun 3, 2026
Reading gzip headers can lead to OOM for adversarial inputs
pycompression/python-isal#250 · opened on May 19, 2026
1
Python 3.15 support
pycompression/python-isal#247 · opened on Mar 28, 2026
2
Checkout the PyBytesWriter API instead of custom bytes resizing
pycompression/python-isal#246 · opened on Dec 1, 2025
1
FAILED tests/test_igzip_threaded.py::test_flush on openEuler 22.03
pycompression/python-isal#241 · opened on Aug 22, 2025
3
Move to stable ABI?
pycompression/python-isal#240 · opened on Aug 8, 2025
Consider using ASAN-instrumented CPython build in CI
pycompression/python-isal#237 · opened on Jul 18, 2025
1
Add support for the free-threaded build and upload cp313t wheels
pycompression/python-isal#236 · opened on Jul 18, 2025
2
Add functions to (de)compress data blocks in one go
pycompression/python-isal#221 · opened on Jan 10, 2025
Allow multithreaded decompression of bgzip formats
pycompression/python-isal#219 · opened on Dec 18, 2024
Use more modern extension module features
pycompression/python-isal#218 · opened on Nov 25, 2024