gistfile1.txt

LaTeX Warning: You have requested, on input line 16, version
               `2015/09/11' of package expl3,
               but only version
               `2015/03/01 v5547 L3 programming layer (loader) '
               is available.


(/nix/store/pr51dz57j6jd22jd8z54yb6jrclvdvfq-texlive-combined-full-2015/share/t
exmf/tex/latex/l3packages/xparse/xparse.sty)

! Package siunitx Error: Support package expl3 too old.

See the siunitx package documentation for explanation.
Type  H <return>  for immediate help.