Error while running wordwise

[rtmlp]

Describe the bug

Hi,

I get the following error while running wordwise

Thanks
Ravi

System Information

OS: MACOS 12.3.1
Calibre: 6.1
Plugin: 3.23.1
Python: 3.7

Error message

Starting job: Generating Word Wise and X-Ray for Buy This, Not That: How to Spend Your Way to Wealth and Freedom 
Job: "Generating Word Wise and X-Ray for Buy This, Not That: How to Spend Your Way to Wealth and Freedom" failed with error: 
Traceback (most recent call last):
  File "calibre/gui2/threaded_jobs.py", line 82, in start_work
  File "calibre_plugins.worddumb.parse_job", line 105, in do_job
    install_deps(model, book_fmt, notifications)
  File "calibre_plugins.worddumb.deps", line 33, in install_deps
    install_x_ray_deps(model, reinstall, notif)
  File "calibre_plugins.worddumb.deps", line 67, in install_x_ray_deps
    pip_install_pkgs(
  File "calibre_plugins.worddumb.deps", line 106, in pip_install_pkgs
    pip_install(
  File "calibre_plugins.worddumb.deps", line 101, in pip_install
    run_subprocess(args)
  File "calibre_plugins.worddumb.utils", line 48, in run_subprocess
    return subprocess.run(
  File "subprocess.py", line 524, in run
subprocess.CalledProcessError: Command '['/usr/bin/python3', '-m', 'pip', 'install', '-U', '-t', PosixPath('/Users/rtm/Library/Preferences/calibre/plugins/worddumb-libs-py3.7'), '--no-deps', '--no-cache-dir', '--disable-pip-version-check', '--python-version', '3.7', 'numpy==1.23.1']' returned non-zero exit status 1.
 
Called with args: ((80, 'AZW3', '/Users/rtm/Calibre Library/Sam Dogen/Buy This, Not That_ How to Spend Your Way to Wealth and Freedom (80)/Buy This, Not That_ How to Spend Your Way - Sam Dogen.azw3', , {'spacy': 'en_core_web_', 'wiki': 'en', 'kaikki': 'English'}), True, True) {'notifications': , 'abort': , 'log': } 

### Reproduce steps

1. Clicked the book
2. Clicked generated wordwise and X-ray
3. Got error in the job list

[xxyzz]

Please also copy the error of the subprocess command, it should be at the end of the error message.

I never run the code on Python 3.7, not sure what happened, maybe pip was trying to compile package. There might be some compatibility issues with older Python, you should upgrade your command line tool(3.8) or install the Homebrew Python(3.9).

[rtmlp]

Thanks. I have upgraded to 3.8 and that solved the issue. Is it possible to mention minimum python requirement in the README.md