hugolib/site_render.go: Warn when missing layout files for content pages

[adiabatic]

This is very much a work-in-progress, debugging printfs and all. I thought discussing code would be easier done here than on the Discourse instance. That said…

One of the things I've noticed is that I'll screw something up and not be able to figure out what I did wrong. I'd like this patch to tell the user, in the output of hugo serve -w, that content exists for which there is no layout.

Since the docs say /tags/ and /categories/ aren't built by default anymore, I removed the line that adds them to the list of default taxonomies. That seems like the proper way.

With the current debugging printfs enabled, I get reasonable warning messages like the following:

Started building sites ...
No layout for "/about/" found in the usual places.
Found a layout for "/"
Found a layout for "/"
Built site for language en:
0 draft content
0 future content
0 expired content
1 regular pages created
2 other pages created
0 non-page files copied
0 paginator pages created
total in 1 ms

The "Found a layout for…" messages aren't useful except for me debugging this patch, but what do you think of the changes I've made to get the "No layout for…" messages in the user-visible output?

[bep]

This doesn't look like a good idea.

[bep]

I'm pretty sure we log this as warnings today:

https://github.com/gohugoio/hugo/blob/master/hugolib/site.go#L1911

Try hugo -v.

If not, we should fix that and not add more code that try to do the same.

[bep]

I get mails about build failures etc. from this PR, so I will close it now. If you still think there is an issue here, please discuss it on the forum.

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.