this derivation will be built:
  /nix/store/jjik91bz2zwaigb193bzq60vfwz7pgcj-hermes-agent-2026.8.27.drv
error: Cannot build '/nix/store/jjik91bz2zwaigb193bzq60vfwz7pgcj-hermes-agent-2026.8.27.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/1i8yspqa1nd1wi7qacdxh9sfic743m7z-hermes-agent-2026.8.27
         /nix/store/fz3cjhd9skiivbw1rksnc2dv3k7jbbdk-hermes-agent-2026.8.27-dist
       Last 25 log lines:
       > adding 'tui_gateway/server.py'
       > adding 'tui_gateway/slash_fuzzy.py'
       > adding 'tui_gateway/slash_worker.py'
       > adding 'tui_gateway/synthetic_turn.py'
       > adding 'tui_gateway/transport.py'
       > adding 'tui_gateway/turn_marker.py'
       > adding 'tui_gateway/ws.py'
       > adding 'hermes_agent-0.20.6.dist-info/METADATA'
       > adding 'hermes_agent-0.20.6.dist-info/WHEEL'
       > adding 'hermes_agent-0.20.6.dist-info/entry_points.txt'
       > adding 'hermes_agent-0.20.6.dist-info/top_level.txt'
       > adding 'hermes_agent-0.20.6.dist-info/RECORD'
       > removing build/bdist.linux-x86_64/wheel
       > Successfully built hermes_agent-0.20.6-py3-none-any.whl
       > Finished creating a wheel...
       > /build/source/dist /build/source
       > Unpacking to: unpacked/hermes_agent-0.20.6...OK
       > Repacking wheel as ./hermes_agent-0.20.6-py3-none-any.whl...OK
       > /build/source
       > Finished executing pypaBuildPhase
       > buildPhase completed in 1 minutes 12 seconds
       > Running phase: pythonRuntimeDepsCheckHook
       > Executing pythonRuntimeDepsCheck
       > Checking runtime dependencies for hermes_agent-0.20.6-py3-none-any.whl
       >   - snowballstemmer not installed
       For full logs, run:
         nix log /nix/store/jjik91bz2zwaigb193bzq60vfwz7pgcj-hermes-agent-2026.8.27.drv