# This derivation builds the LaTeX presentation.

{ pkgs ? import <nixpkgs> {} }:

with pkgs; let tex = texlive.combine {
  inherit (texlive)
    beamer
    beamertheme-metropolis
    etoolbox
    euenc
    extsizes
    fontspec
    lualibs
    luaotfload
    luatex
    luatex-def
    minted
    ms
    pgfopts
    scheme-basic;
};
in stdenv.mkDerivation {
  name = "nuug-reproducible-slides.pdf";
  src = ./.;

  FONTCONFIG_FILE = makeFontsConf {
    fontDirectories = [ fira fira-code fira-mono ];
  };

  buildInputs = [ tex fira fira-code fira-mono ];
  buildPhase = ''
    # LaTeX needs a cache folder in /home/ ...
    mkdir home
    export HOME=$PWD/home
    # ${tex}/bin/luaotfload-tool -ufv

    # As usual, TeX needs to be run twice ...
    function run() {
      ${tex}/bin/lualatex presentation.tex
    }
    run && run
  '';

  installPhase = ''
    cp presentation.pdf $out
  '';
}