[Transmute] Unable to convert EPUB to PDF #1690

Script: Transmute

Reported by: @miniboathead

Guidelines

• Read and understood guidelines: yes
• Verbose mode used: yes

Environment

• Linux distribution: Debian
• Proxmox version: 9.1
• Default settings: No
• Advanced settings: Yes
• Exact command: bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVED/main/ct/transmute.sh)"

Description

I was unable to convert EPUB to PDF. There was an error about not having the correct PDF engine.

Steps to reproduce

Step 1: Set default conversions for EPUB to PDF
Step 2: upload EPUB file to webpage and press convert
Step 3: Get error message about no PDF engine

Error output

First error:

Conversion failed for generic_ebook_ambigious_name.epub: Conversion failed: Pandoc died with exitcode "47" during conversion: weasyprint not found. Please select a different --pdf-engine or install weasyprint

Second error after weasyprint install:

Conversion failed for generic_ebook_ambigious_name.epub: Conversion failed: Calibre conversion failed: Failed to import PyQt module: PyQt6.QtWebEngineCore with error: libOpenGL.so.0: cannot open shared object file: No such file or directory Traceback (most recent call last): File "runpy.py", line 198, in _run_module_as_main File "runpy.py", line 88, in _run_code File "site.py", line 47, in File "site.py", line 43, in main File "calibre/ebooks/conversion/cli.py", line 427, in main File "calibre/ebooks/conversion/plumber.py", line 1085, in run File "calibre/ebooks/conversion/plugins/pdf_output.py", line 153, in specialize_options ImportError: cannot import name 'QWebEnginePage' from 'qt.webengine' (/opt/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/webengine.pyc)

Additional context

The fix:

Step 1: install weasyprint via apt, no dice.

Step 2: install weasyprint via pip3

        2a: sudo apt install python3-pip libpango-1.0-0 libharfbuzz0b libpangoft2-1.0-0

        2b: sudo pip3 install weasyprint

        2c: got second error message above; apt install libopengl0 libegl1 libglx-mesa0 libxdamage1 libxkbcommon0 libnss3 libgbm1 libasound2 libgl1

        2d: added 'export QT_QPA_PLATFORM=offscreen' to ~/.bashrc

         2e: sudo reboot now

Step 3: Upload EPUB and click convert

Step 4: Download new PDF file.

Hope this helps everyone else!