Pulumi has integrated built-in support for uv, a high-speed Python package manager, to enhance its Infrastructure as Code capabilities by drastically improving the speed of managing Python dependencies and virtual environments. Written in Rust, uv offers performance enhancements, installing packages up to 100 times faster than traditional tools like pip, and provides reliable dependency resolution while maintaining compatibility with existing requirements.txt and pyproject.toml files. Pulumi users can enable uv by specifying it as the toolchain in the Pulumi.yaml configuration file, allowing them to benefit from uv's capabilities in managing virtual environments and dependencies seamlessly. More detailed guidance on using uv with Pulumi is available in their Python documentation.