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cd7e7a5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | """Small helpers for optional PDF runtime dependencies."""
PDF_VIEWER_PYMUPDF_MISSING = (
"PDF viewer requires PyMuPDF. Install optional PDF dependencies with "
"`pip install -r requirements-optional.txt` (PyMuPDF is AGPL-3.0)."
)
def load_pymupdf_for_pdf_viewer():
"""Return the PyMuPDF module, or raise a user-facing setup hint."""
try:
import fitz # PyMuPDF, optional
except ImportError as exc:
raise RuntimeError(PDF_VIEWER_PYMUPDF_MISSING) from exc
return fitz
|