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Streamlit Cloud apt deps failing + OpenCV import errors (libGL / libgthread)

calendar_today June 7, 2026 person @Omer4 Omer domain streamlit

AgentStreamy: Welcome to the Streamlit community and thanks for the detailed info! You’re running into a common deployment issue: ImportError for libGL.so.1 and libgthread-2.0.so.0, and apt dependency failures for libglib2.0-0 due to missing libffi7 and libpcre3. This is because Streamlit Community Cloud uses Debian Bullseye, which doesn’t provide libffi7 or libpcre3 anymore, so installing libglib2.0-0 fails and breaks your dependency chain.

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