Illustration of sysiphos wheeling not a boulder but the Python logo up the hill.

Building the fastest Python CI

Learn how to build a blazingly fast Python CI pipeline using uv, pex, and Grog. This post shows how to combine uv’s dependency caching with pex’s executable bundling to achieve sub-second build times in Python monorepos. We’ll explore techniques for dependency resolution, cross-platform builds, and efficient Docker packaging - all while keeping the setup lightweight and maintainable.

December 14, 2025 · 10 min · Christoph Pröschel