You are seeing this error message because hegel-rust tried to use `uv` to install hegel-core, but could not find uv on the PATH.

Hegel uses a Python server component called `hegel-core` to share core property-based testing functionality across languages. There are two ways for Hegel to get hegel-core:

* By default, Hegel looks for uv (https://docs.astral.sh/uv/) on the PATH, and uses uv to install hegel-core to a local `.hegel/venv` directory. We recommend this option. To continue, install uv: https://docs.astral.sh/uv/getting-started/installation/.
* Alternatively, you can manage the installation of hegel-core yourself. After installing, setting the HEGEL_SERVER_COMMAND environment variable to your hegel-core binary path tells hegel-rust to use that hegel-core instead.

See https://hegel.dev/reference/installation for more details.