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Quote:

Originally Posted by Doitsu

Under Linux some of these Python packages are available as standalone .deb packages others need to be installed via pip3. You can test if you have all recommended packages by installing and running the Sigil test plugin.

As for cssselect and Pillow, try installing them with pip3:

Code:

sudo pip3 install cssselect
sudo pip3 install Pillow

If pip3 isn't found install python3-pip.

Thanks for your assistance, Doitsu.

No problem with cssselect, but I get errors with Pillow.

Code:

…
ValueError: jpeg is required unless explicitly disabled using --disable-jpeg, aborting

----------------------------------------
Cleaning up...
  Removing temporary dir /tmp/pip_build_root...
Command /usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/Pillow/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-oozytx9k-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/Pillow
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/lib/python3/dist-packages/pip/commands/install.py", line 283, in run
    requirement_set.install(install_options, global_options, root=options.root_path)
  File "/usr/lib/python3/dist-packages/pip/req.py", line 1436, in install
    requirement.install(install_options, global_options, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/pip/req.py", line 707, in install
    cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False)
  File "/usr/lib/python3/dist-packages/pip/util.py", line 715, in call_subprocess
    % (command_desc, proc.returncode, cwd))
pip.exceptions.InstallationError: Command /usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/Pillow/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-oozytx9k-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/Pillow

Full pip.log

Spoiler:

When I tried to install the test plugin using your link Sigil tells me “Error: Plugin not a valid Sigil plugin.” The version in the source zip installs OK and reports that everything is fine except, of course, “Python Package: PIL Missing”.