Use FileSystemLoader for locating templates
Fixes this Traceback.
Traceback (most recent call last):
File "/home/anatoli/f/fedora-packages-static/bin/generate-html.py", line 552, in <module>
main()
File "/home/anatoli/f/fedora-packages-static/bin/generate-html.py", line 127, in main
loader=PackageLoader("generate-html", TEMPLATE_DIR), autoescape=True
File "/usr/lib/python3.10/site-packages/jinja2/loaders.py", line 309, in __init__
raise ValueError(
ValueError: The 'generate-html' package was not installed in a way that PackageLoader understands.
make: *** [Makefile:39: html] Error 1