texlive-error-2

# Tex packages:

    (texlive.combine {
      inherit (texlive) scheme-small collection-latex
      collection-latexextra collection-latexrecommended;
    })

# Pandoc error:

This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/NixOS.org) (preloaded format=pdflatex)
 restricted \write18 enabled.
I can't find the format file `pdflatex.fmt'!