SubSections : Nested sections ?

[Progi1984]

Now, I have sections, which works perfectly.

pages
> dir1
>> dir1.1
>>> index.md
>> dir1.2
>>> index.md
> dir1.md

I have the page dir1 which is a section, and lists well dir1.1 and dir1.2.

I add subsections,

pages
> dir1
>> dir1.1
>>> index.md
>>> dir1.1.1
>>>> index.md
>>> dir1.1.2
>>>> index.md
>> dir1.2
>>> index.md
>>> dir1.2.1
>>>> index.md
>>> dir1.2.2
>>>> index.md
> dir1.md

How can my page dir1 can only list dir1.1 and dir1.2 (and not all the flat tree) ?
How can my page dir1.1 can only list dir1.1.1 and dir1.1.2?

[Progi1984]

I found a solution. Use the filter filter_by with the key folder.

[ArnaudLigny]

Yes, actually Cecil don't support nested section easily: you have to tweaks "sub-layouts" with custom collection, using filter_by.

And I also initiated a dedicated PR since 2023 : #1704.