Streamlit environment

Use whatever dependency management the project already has (pip, poetry, conda, etc.). If starting fresh and uv is available, it's a good default—fast, reliable, and creates isolated environments automatically.

If uv is not installed, ask the user before installing it.

CRITICAL: Always Use Latest Streamlit

Always specify streamlit>=1.53.0 (or latest) in dependencies. Many Streamlit features and patterns in these skills require recent versions. Older streamlit versions will cause errors with:

• Material icons (:material/icon_name:)
• st.pills(), st.segmented_control()
• Modern caching decorators
• Navigation APIs

When setting up a new project or fixing an existing one, always check and update the streamlit version.

Using uv

If uv is available, here's how to set up a Streamlit project.