Turns out the template_folder must be declared inside the blueprint for it to find a template directory that is not in the root. I discovered this by using the EXPLAIN_TEMPLATE_LOADING config option (which I've set to be enabled when DEBUG is True) and found that only the general_bp was being searched for template files. It was ALSO the only blueprint with the template_folder set.
I also added pip install wheel to the GitHub Actions workflow which fixes the failure, though I am still unsure why that issue came up in the first place.
Finally, I noticed that the same infopane.html and loading-bar.html partials were copied and pasted into each sub-template directory. Instead, I moved base.html and all the partials into the global /templates, which seems to work just fine. I also removed some stale CSS from main.css. I think it's best to keep around as little custom CSS as possible and remove any not being used.
Turns out the
template_foldermust be declared inside the blueprint for it to find a template directory that is not in the root. I discovered this by using theEXPLAIN_TEMPLATE_LOADINGconfig option (which I've set to be enabled whenDEBUG is True) and found that only thegeneral_bpwas being searched for template files. It was ALSO the only blueprint with thetemplate_folderset.I also added
pip install wheelto the GitHub Actions workflow which fixes the failure, though I am still unsure why that issue came up in the first place.Finally, I noticed that the same
infopane.htmlandloading-bar.htmlpartials were copied and pasted into each sub-template directory. Instead, I movedbase.htmland all the partials into the global/templates, which seems to work just fine. I also removed some stale CSS frommain.css. I think it's best to keep around as little custom CSS as possible and remove any not being used.