Non-CUDA docker install failure due to build problems involving uv

Start by reproducing the non-CUDA container failure with the reported docker exec command and inspect the pyproject.toml files reached by find. Trace the uv sync failures under /app/whisperx-env/WhisperX and /app/whisperx-env/pyannote, including the pandas build errors. Done means the non-CUDA model environments initialize and the reported Scriberr URL is reachable.

When running the non-CUDA version, the following output results (twice):

time=19:56:59 level=ERROR msg="Failed to initialize transcription model" model_id=canary error="failed to setup Canary environment: uv sync failed: exit status 2: warning: Failed to parse `pyproject.toml` during settings discovery:\n  TOML parse error at line 41, column 5\n     |\n  41 | cpu\"\n     |     ^\n  key with no value, expected `=`\n\nerror: Failed to parse: `pyproject.toml`\n  Caused by: TOML parse error at line 41, column 5\n   |\n41 | cpu\"\n   |     ^\nkey with no value, expected `=`"
time=19:56:59 level=ERROR msg="Failed to initialize diarization model" model_id=sortformer error="failed to setup Sortformer environment: uv sync failed: exit status 2: warning: Failed to parse `pyproject.toml` during settings discovery:\n  TOML parse error at line 41, column 5\n     |\n  41 | cpu\"\n     |     ^\n  key with no value, expected `=`\n\nerror: Failed to parse: `pyproject.toml`\n  Caused by: TOML parse error at line 41, column 5\n   |\n41 | cpu\"\n   |     ^\nkey with no value, expected `=`"
time=19:56:59 level=ERROR msg="Failed to initialize transcription model" model_id=parakeet error="failed to setup Parakeet environment: uv sync failed: exit status 2: warning: Failed to parse `pyproject.toml` during settings discovery:\n  TOML parse error at line 41, column 5\n     |\n  41 | cpu\"\n     |     ^\n  key with no value, expected `=`\n\nerror: Failed to parse: `pyproject.toml`\n  Caused by: TOML parse error at line 41, column 5\n   |\n41 | cpu\"\n   |     ^\nkey with no value, expected `=`"

Running the following uv command identifies the problem (for some reason, however, I simply cannot locate the offending pyproject.toml file on the file system):

$ docker exec -it 44ec58da6719 /bin/bash -c 'find . -name "pyproject.toml" -execdir uv sync \;'
warning: Failed to parse `pyproject.toml` during settings discovery:
  TOML parse error at line 41, column 5
     |
  41 | cpu"
     |     ^
  key with no value, expected `=`

error: Failed to parse: `pyproject.toml`
  Caused by: TOML parse error at line 41, column 5
   |
41 | cpu"
   |     ^
key with no value, expected `=`
Resolved 152 packages in 0.59ms
Audited 127 packages in 1ms
Using CPython 3.11.14 interpreter at: /usr/local/bin/python3
Creating virtual environment at: .venv
  × Failed to build `pandas @ file:///app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `mesonpy.build_editable` failed (exit status: 1)

      [stdout]
      + meson setup /app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas /app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas/build/cp311 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --vsenv
      --native-file=/app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas/build/cp311/meson-python-native-file.ini

      ERROR: Neither source directory '/app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas' nor build directory '/app/whisperx-env/WhisperX/.venv/lib/python3.10/site-packages/pandas/build/cp311' contain a build file meson.build.

      hint: This usually indicates a problem with the package or the build environment.
Resolved 130 packages in 0.52ms
Audited 114 packages in 0.93ms
Using CPython 3.11.14 interpreter at: /usr/local/bin/python3
Creating virtual environment at: .venv
  × Failed to build `pandas @ file:///app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `mesonpy.build_editable` failed (exit status: 1)

      [stdout]
      + meson setup /app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas /app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas/build/cp311 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --vsenv
      --native-file=/app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas/build/cp311/meson-python-native-file.ini

      ERROR: Neither source directory '/app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas' nor build directory '/app/whisperx-env/pyannote/.venv/lib/python3.11/site-packages/pandas/build/cp311' contain a build file meson.build.

      hint: This usually indicates a problem with the package or the build environment.

Incidentally, I do get the message "Scriberr is ready" url=http://0.0.0.0:8080, but I cannot connect to it.