Emacs pandoc export to pdf

I am using Nixos 22.11 with Doom Emacs. In the init.el of Doom Emacs i have enabled (org +pandoc), In Nixos i installed pandoc and texlive.combined.scheme-medium. The Readme of the Org Module in Doom Emacs just advises to install texlive.combined.scheme-medium in Nixos.

Still, it isn’t working. I want to export an .org document as a pdf:

If i select to export to html5-pdf (SPC-m-e-p-%) the error is

Error occured. 
pagedjs-cli not found. Please select a different --pdf-engine or install pagedjs-cli

If i select to export to ms-pdf (SPC-m-e-p–) the error is

Error occured. 
pdfroff not found. Please select a different --pdf-engine or install pdfroff

I don’t know what to do as i thought it would work without further setup. There are no packages named pagedjs-cli and pdfroff in the Nixos repository.

What do i have to do to make it work?