cosmo-python¶
Standalone versioned Cosmopolitan Python builds.
Why?¶
- Single portable binary: runs on Linux, macOS, Windows, FreeBSD, OpenBSD, NetBSD
- Multiple Python versions: 3.10 through 3.14 available
- Verified supply chain: all upstream sources integrity-checked (SHA256, GPG, Sigstore)
- Attested releases: weekly update checks, validated builds, verifiable artifacts
- ~45MB self-contained: no installation, no dependencies, no container
See Limitations for known differences from standard CPython.
Usage¶
Download and run:
curl -LO https://github.com/metaist/cosmo-python/releases/latest/download/python-3.14.2-cosmo.com
chmod +x python-3.14.2-cosmo.com
./python-3.14.2-cosmo.com --version
Acknowledgments¶
This project builds upon the excellent work of:
-
Justine Tunney (@jart) — Creator of Cosmopolitan libc, the C library that makes truly portable executables.
-
Gautham Venkatasubramanian (@ahgamut) — Creator and maintainer of superconfigure, which provides build infrastructure for compiling Python with Cosmopolitan libc.
-
Gregory Szorc (@indygreg) — Creator of python-build-standalone, now maintained by Astral. Inspiration for standalone Python distribution patterns.
-
Claude — AI assistant that wrote most of this codebase with steering from @metaist.