Setting slide layout in PPTX output

[wuffi]

Is there a way to set/control the slide layout in Pandoc's PPTX output (for example with a Lua filter)?

I carefully looked at the source code of the Presentation.hs PowerPoint writer on https://github.com/jgm/pandoc/blob/main/src/Text/Pandoc/Writers/Powerpoint/Presentation.hs:
It automatically chooses the slide layout based on the content of the corresponding node in the AST (abstract syntax tree).
Being well familiar with Lua filters, I tried to put a DIV with attributes like custom-style, style, layout etc., but none of them changed the slide layout in the PPTX output file.

[jgm]

Sorry, I had nothing to do with the pptx writer and the people who have worked on it are no longer active in the project. You'd have to dive into the source code to figure out how this is done.

[wuffi]

Thanks a lot.
I think the choice of the layout is really hard-coded in the PowerPoint writer and restricted to a couple of pre-defined layouts. Adding additional layouts would thus require changes to the PowerPoint writer itsself.