{ lib, stdenv, fetchurl, fetchpatch, buildPackages
, texlive
, zlib, libiconv, libpng, libX11
, freetype, gd, libXaw, icu, ghostscript, libXpm, libXmu, libXext
, perl, perlPackages, python3Packages, pkg-config, cmake, ninja
, libpaper, graphite2, zziplib, harfbuzz, potrace, gmp, mpfr, mupdf-headless
, brotli, cairo, pixman, xorg, clisp, biber, woff2, xxHash
, makeWrapper, shortenPerlShebang, useFixedHashes, asymptote
, biber-ms
, tlpdb
}:

# Useful resource covering build options:
# http://tug.org/texlive/doc/tlbuild.html

let
  withSystemLibs = map (libname: "--with-system-${libname}");

  year = toString ((import ./tlpdb.nix)."00texlive.config").year;
  version = year; # keep names simple for now

  # detect and stop redundant rebuilds that may occur when building new fixed hashes
  assertFixedHash = name: src:
    if ! useFixedHashes || src ? outputHash then src else throw "The TeX Live package '${src.pname}' must have a fixed hash before building '${name}'.";

  # list of packages whose binaries are built in core, core-big
  # generated manually by inspecting ${core}/bin
  corePackages = [ "afm2pl" "aleph" "autosp" "axodraw2" "bibtex" "cjkutils"
    "ctie" "cweb" "detex" "dtl" "dvi2tty" "dvicopy" "dvidvi" "dviljk"
    "dviout-util" "dvipdfmx" "dvipos" "dvips" "fontware" "gregoriotex"
    "gsftopk" "hitex" "kpathsea" "lacheck" "lcdftypetools" "m-tx" "makeindex"
    "mfware" "musixtnt" "omegaware" "patgen" "pdftex" "pdftosrc" "pmx"
    "ps2eps" "ps2pk" "psutils"  "ptex" "seetexk" "synctex" "t1utils" "tex"
    "tex4ht" "texlive-scripts-extra" "texware" "tie" "tpic2pdftex" "ttfutils"
    "uptex" "velthuis" "vlna" "web" "xml2pmx" ];
  coreBigPackages = [ "metafont" "mflua" "metapost" "luatex" "luahbtex"
    "upmendex" "xetex" ] ++ lib.optional withLuaJIT "luajittex";
  binPackages = lib.getAttrs (corePackages ++ coreBigPackages) tlpdb;

  common = {
    src = fetchurl {
      urls = [
        "http://ftp.math.utah.edu/pub/tex/historic/systems/texlive/${year}/texlive-${year}0313-source.tar.xz"
              "ftp://tug.ctan.org/pub/tex/historic/systems/texlive/${year}/texlive-${year}0313-source.tar.xz"
      ];
      hash = "sha256-OHiqDh7QMBwFOw4u5OmtmZxEE0X0iC55vdHI9M6eebk=";
    };

    prePatch = ''
      for i in texk/kpathsea/mktex*; do
        sed -i '/^mydir=/d' "$i"
      done

      # ST_NLINK_TRICK causes kpathsea to treat folders with no real subfolders
      # as leaves, even if they contain symlinks to other folders; must be
      # disabled to work correctly with the nix store", see section 5.3.6
      # “Subdirectory expansion” of the kpathsea manual
      # http://mirrors.ctan.org/systems/doc/kpathsea/kpathsea.pdf for more
      # details
      sed -i '/^#define ST_NLINK_TRICK/d' texk/kpathsea/config.h
    '' +
    # when cross compiling, we must use himktables from PATH
    # (i.e. from buildPackages.texlive.bin.core.dev)
    lib.optionalString (!stdenv.buildPlatform.canExecute stdenv.hostPlatform)  ''
      sed -i 's|\./himktables|himktables|' texk/web2c/Makefile.in
    ''
;

    configureFlags = [
      "--with-banner-add=/nixos.org"
      "--disable-missing" # terminate if a requested program or feature must be
                          # disabled, e.g., due to missing libraries
      "--disable-native-texlive-build" # do not build for the TeX Live binary distribution
      "--enable-shared" # "--enable-cxx-runtime-hack" # static runtime
      "--enable-tex-synctex"
      "--disable-texlive" # do not build the texlive (TeX Live scripts) package
      "--disable-linked-scripts" # do not install the linked scripts
      "-C" # use configure cache to speed up
    ]
      ++ withSystemLibs [
      # see "from TL tree" vs. "Using installed"  in configure output
      "zziplib" "mpfr" "gmp"
      "pixman" "potrace" "gd" "freetype2" "libpng" "libpaper" "zlib"
    ] ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform)
      "BUILDCC=${buildPackages.stdenv.cc.targetPrefix}cc";

    # move binaries to corresponding split outputs, based on content of texlive.tlpdb
    binToOutput = lib.listToAttrs
      (lib.concatMap
        (n: map (v: { name = v; value = builtins.replaceStrings [ "-" ] [ "_" ] n; }) binPackages.${n}.binfiles or [ ])
        (builtins.attrNames binPackages));

    moveBins = ''
      for bin in "$out/bin"/* ; do
        bin="''${bin##*/}"
        package="''${binToOutput[$bin]}"
        if [[ -n "$package" ]] ; then
          if [[ -z "''${!package}" ]] ; then
            echo "WARNING: missing output '$package' for binary '$bin', leaving in 'out'"
          else
            mkdir -p "''${!package}"/bin
            mv "$out/bin/$bin" "''${!package}"/bin/
          fi
        else
          echo "WARNING: no output known for binary '$bin', leaving in 'out'"
        fi
      done
    '';
  };

  # RISC-V: https://github.com/LuaJIT/LuaJIT/issues/628
  withLuaJIT = !(stdenv.hostPlatform.isPower && stdenv.hostPlatform.is64bit) && !stdenv.hostPlatform.isRiscV;
in rec { # un-indented

texliveYear = year;


core = stdenv.mkDerivation rec {
  pname = "texlive-bin";
  inherit version;

  __structuredAttrs = true;

  inherit (common) binToOutput src prePatch;

  outputs = [ "out" "dev" "man" "info" ]
    ++ (builtins.map (builtins.replaceStrings [ "-" ] [ "_" ]) corePackages);

  nativeBuildInputs = [
    pkg-config
  ] ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) (with texlive.bin.core; [
    # configure: error: tangle was not found but is required when cross-compiling.
    # dev (himktables) is used when building hitex to generate the additional source file hitables.c
    web/*tangle*/ cweb/*ctangle*/ omegaware/*otangle*/ tie/*tie*/ # see "Building TeX Live" 6.4.2 Cross problems
    dev/*himktables*/
  ]);

  buildInputs = [
    /*teckit*/ zziplib mpfr gmp
    pixman gd freetype libpng libpaper zlib
    perl
  ];

  hardeningDisable = [ "format" ];

  preConfigure = ''
    rm -r libs/{cairo,freetype2,gd,gmp,graphite2,harfbuzz,icu,libpaper,libpng} \
      libs/{lua53,luajit,mpfr,pixman,pplib,teckit,zlib,zziplib} \
      texk/{bibtex-x,chktex,dvipng,dvisvgm,upmendex,xdvik} \
      utils/{asymptote,texdoctk,xindy,xpdfopen}
    mkdir WorkDir
    cd WorkDir
  '';
  configureScript = "../configure";

  depsBuildBuild = [ buildPackages.stdenv.cc ];

  configureFlags = common.configureFlags
    ++ [ "--without-x" ] # disable xdvik and xpdfopen
    ++ map (what: "--disable-${what}") [
      "chktex"
      "dvisvgm" "dvipng" # ghostscript dependency
      "luatex" "luajittex" "luahbtex" "luajithbtex"
      "mp" "pmp" "upmp" "mf" "mflua" "mfluajit" # cairo would bring in X and more
      "xetex" "bibtexu" "bibtex8" "bibtex-x" "upmendex" # ICU isn't small
    ];

  enableParallelBuilding = true;

  doCheck = false; # triptest fails, likely due to missing TEXMF tree
  preCheck = "patchShebangs ../texk/web2c";

  installTargets = [ "install" ];

  # TODO: perhaps improve texmf.cnf search locations
  postInstall =
       /* remove redundant texmf-dist (content provided by TeX Live packages) */
  ''
    rm -fr "$out"/share/texmf-dist
  '' + /* install himktables in separate output for use in cross compilation */ ''
     mkdir -p $dev/bin
     cp texk/web2c/.libs/himktables $dev/bin/himktables
  '' + common.moveBins;

  passthru = { inherit version buildInputs; };

  meta = with lib; {
    description = "Basic binaries for TeX Live";
    homepage    = "http://www.tug.org/texlive";
    license     = lib.licenses.gpl2;
    maintainers = with maintainers; [ veprbl lovek323 raskin jwiegley ];
    platforms   = platforms.all;
  };
};


inherit (core-big) metafont mflua metapost luatex luahbtex xetex;
luajittex = core.big.luajittex or null;
core-big = stdenv.mkDerivation {
  pname = "texlive-bin-big";
  inherit version;

  __structuredAttrs = true;

  inherit (common) binToOutput src prePatch;

  patches = [
    # improves reproducibility of fmt files
    # see discussion at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009196
    (fetchpatch {
      name = "lua_fixed_hash.patch";
      url = "https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=1009196;filename=lua_fixed_hash.patch;msg=45";
      sha256 = "sha256-FTu1eRd3AUU7IRs2/7e7uwHuvZsrzTBPypbcEZkU7y4=";
    })
    # update to LuaTeX 1.16.1 to prepare for 1.17.0 below
    (fetchpatch {
      name = "luatex-1.16.1.patch";
      url = "https://github.com/TeX-Live/texlive-source/commit/ad8702a45e317fa9d396ef4d50467c37964a9543.patch";
      hash = "sha256-qfzUfkJUfW285w+fnbpO8JLArM7/uj3yb9PONgZrJLE=";
    })
    # fixes security issues in luatex that allows arbitrary code execution even with shell-escape disabled and network requests, see https://tug.org/~mseven/luatex.html
    # fixed in LuaTeX 1.17.0, shipped as a rare binary update in TL 2023
    (fetchpatch {
      name = "luatex-1.17.0.patch";
      url = "https://github.com/TeX-Live/texlive-source/commit/6ace460233115bd42b36e63c7ddce11cc92a1ebd.patch";
      hash = "sha256-2fbIdwnw/XQXci9OqRrb6B5tHiSR0co08NyFgMyXCvc=";
    })
    # Fixes texluajitc crashes on aarch64, backport of the upstream fix
    # https://github.com/LuaJIT/LuaJIT/commit/e9af1abec542e6f9851ff2368e7f196b6382a44c
    # to the version vendored by texlive (2.1.0-beta3)
    (fetchpatch {
      name = "luajit-fix-aarch64-linux.patch";
      url = "https://raw.githubusercontent.com/void-linux/void-packages/master/srcpkgs/LuaJIT/patches/e9af1abec542e6f9851ff2368e7f196b6382a44c.patch";
      hash = "sha256-ysSZmfpfCFMukfHmIqwofAZux1e2kEq/37lfqp7HoWo=";
      stripLen = 1;
      extraPrefix = "libs/luajit/LuaJIT-src/";
    })
  ];

  hardeningDisable = [ "format" ];

  inherit (core) nativeBuildInputs depsBuildBuild;
  buildInputs = core.buildInputs ++ [ core cairo harfbuzz icu graphite2 libX11 potrace ];

  /* deleting the unused packages speeds up configure by a considerable margin
     and ensures we do not rebuild existing libraries by mistake */
  preConfigure = ''
    rm -r libs/{cairo,freetype2,gd,gmp,graphite2,harfbuzz,icu,libpaper,libpng} \
      libs/{mpfr,pixman,xpdf,zlib,zziplib} \
      texk/{afm2pl,bibtex-x,chktex,cjkutils,detex,dtl,dvi2tty,dvidvi,dviljk,dviout-util} \
      texk/{dvipdfm-x,dvipng,dvipos,dvipsk,dvisvgm,gregorio,gsftopk,kpathsea} \
      texk/{lcdf-typetools,makeindexk,makejvf,mendexk,musixtnt,ps2pk,psutils,ptexenc} \
      texk/{seetexk,tex4htk,texlive,ttf2pk2,ttfdump,xdvik} \
      utils/{asymptote,autosp,axodraw2,devnag,lacheck,m-tx,pmx,ps2eps,t1utils,texdoctk} \
      utils/{tpic2pdftex,vlna,xindy,xml2pmx,xpdfopen}
    mkdir WorkDir
    cd WorkDir
  '';

  configureFlags = common.configureFlags
    ++ withSystemLibs [ "kpathsea" "ptexenc" "cairo" "harfbuzz" "icu" "graphite2" ]
    ++ map (prog: "--disable-${prog}") # don't build things we already have
      # list from texk/web2c/configure
      ([ "tex" "ptex" "eptex" "uptex" "euptex" "aleph" "hitex" "pdftex"
        "web-progs" "synctex"
      ] ++ lib.optionals (!withLuaJIT) [ "luajittex" "luajithbtex" "mfluajit" ])
    /* disable all packages, re-enable upmendex, web2c packages */
    ++ [ "--disable-all-pkgs" "--enable-upmendex" "--enable-web2c" ]
    /* kpathsea requires specifying the kpathsea location manually */
    ++ [ "--with-kpathsea-includes=${core.dev}/include" ];

  configureScript = "../configure";

  enableParallelBuilding = true;

  doCheck = false; # fails

  outputs = [ "out" "dev" "man" "info" ]
    ++ (builtins.map (builtins.replaceStrings [ "-" ] [ "_" ]) coreBigPackages)
    # some outputs of metapost, omegaware are for ptex/uptex
    ++ [ "ptex" "uptex" ]
    # unavoidable duplicates from core
    ++ [ "ctie" "cweb" "omegaware" "texlive_scripts_extra" "tie" "web" ];
  postInstall = common.moveBins;
};


chktex = stdenv.mkDerivation {
  pname = "chktex";
  inherit (texlive.pkgs.chktex) version;

  inherit (common) src;

  nativeBuildInputs = [ pkg-config ];
  # perl used in shebang of script bin/deweb
  buildInputs = [ core/*kpathsea*/ perl ];

  preConfigure = "cd texk/chktex";

  configureFlags = common.configureFlags
    ++ [ "--with-system-kpathsea" ];

  enableParallelBuilding = true;
};

# the LuaMetaTeX engine (distributed since TeX Live 2023) must be built separately
# the sources used by TL are stored in the source TL repo
# for details see https://wiki.contextgarden.net/Building_LuaMetaTeX_for_TeX_Live
context = stdenv.mkDerivation rec {
  pname = "luametatex";
  version = "2.10.08";

  src = fetchurl {
    url = "https://tug.org/svn/texlive/trunk/Master/source/luametatex-${version}.tar.xz?revision=67034&view=co";
    hash = "sha256-3JeOUQ63jJOZWTxFCoyWjfcrspmdmC/yqgS1JaLfTWk=";
  };

  enableParallelBuilding = true;
  nativeBuildInputs = [ cmake ninja ];

  meta = with lib; {
    description = "The LUAMETATEX engine is a follow up on LUATEX and is again part of CONTEXT development";
    homepage = "https://www.pragma-ade.nl/luametatex-1.htm";
    license = licenses.gpl2Plus;
    maintainers = with lib.maintainers; [ apfelkuchen6 xworld21 ];
  };
};

dvisvgm = stdenv.mkDerivation rec {
  pname = "dvisvgm";
  version = "3.2.2";

  src = assert lib.assertMsg (version == texlive.pkgs.dvisvgm.version) "dvisvgm: TeX Live version (${texlive.pkgs.dvisvgm.version}) different from source (${version}), please update dvisvgm"; fetchurl {
    url = "https://github.com/mgieseki/dvisvgm/releases/download/${version}/dvisvgm-${version}.tar.gz";
    hash = "sha256-8GKL6lqjMUXXWwpqbdGPrYibdSc4y8AcGUGPNUc6HQA=";
  };

  configureFlags = [
    "--disable-manpage" # man pages are provided by the doc container
  ];

  # PDF handling requires mutool (from mupdf) since Ghostscript 10.01
  postPatch = ''
    substituteInPlace src/PDFHandler.cpp \
      --replace-fail 'Process("mutool"' "Process(\"$(PATH="$HOST_PATH" command -v mutool)\""
  '';

  nativeBuildInputs = [ pkg-config ];
  buildInputs = [ core brotli ghostscript zlib freetype woff2 potrace xxHash mupdf-headless ];

  enableParallelBuilding = true;
};


dvipng = stdenv.mkDerivation {
  pname = "dvipng";
  inherit (texlive.pkgs.dvipng) version;

  inherit (common) src;

  nativeBuildInputs = [ perl pkg-config makeWrapper ];
  buildInputs = [ core/*kpathsea*/ zlib libpng freetype gd ghostscript ];

  preConfigure = ''
    cd texk/dvipng
    patchShebangs doc/texi2pod.pl
  '';

  configureFlags = common.configureFlags
    ++ [ "--with-system-kpathsea" "--with-gs=yes" "--disable-debug" ];

  GS="${ghostscript}/bin/gs";

  enableParallelBuilding = true;
};

pygmentex = python3Packages.buildPythonApplication rec {
  pname = "pygmentex";
  inherit (src) version;
  format = "other";

  src = assertFixedHash pname texlive.pkgs.pygmentex.tex;

  propagatedBuildInputs = with python3Packages; [ pygments chardet ];

  dontBuild = true;

  doCheck = false;

  installPhase = ''
    runHook preInstall

    install -D ./scripts/pygmentex/pygmentex.py "$out"/bin/pygmentex

    runHook postInstall
  '';

  meta = with lib; {
    homepage = "https://www.ctan.org/pkg/pygmentex";
    description = "Auxiliary tool for typesetting code listings in LaTeX documents using Pygments";
    longDescription = ''
      PygmenTeX is a Python-based LaTeX package that can be used for
      typesetting code listings in a LaTeX document using Pygments.

      Pygments is a generic syntax highlighter for general use in all kinds of
      software such as forum systems, wikis or other applications that need to
      prettify source code.
    '';
    license = licenses.lppl13c;
    maintainers = with maintainers; [ romildo ];
  };
};

inherit asymptote;

inherit biber;
inherit biber-ms;
bibtexu = bibtex8;
bibtex8 = stdenv.mkDerivation {
  pname = "bibtex-x";
  inherit (texlive.pkgs.bibtexu) version;

  inherit (common) src;

  nativeBuildInputs = [ pkg-config ];
  buildInputs = [ core/*kpathsea*/ icu ];

  preConfigure = "cd texk/bibtex-x";

  configureFlags = common.configureFlags
    ++ [ "--with-system-kpathsea" "--with-system-icu" ];

  enableParallelBuilding = true;
};


xdvi = stdenv.mkDerivation {
  pname = "xdvi";
  inherit (texlive.pkgs.xdvi) version;

  inherit (common) src;

  nativeBuildInputs = [ pkg-config ];
  buildInputs = [ core/*kpathsea*/ freetype ghostscript ]
    ++ (with xorg; [ libX11 libXaw libXi libXpm libXmu libXaw libXext libXfixes ]);

  preConfigure = "cd texk/xdvik";

  configureFlags = common.configureFlags
    ++ [ "--with-system-kpathsea" "--with-system-libgs" ];

  enableParallelBuilding = true;

  postInstall = ''
    substituteInPlace "$out/bin/xdvi" \
      --replace-fail "exec xdvi-xaw" "exec '$out/bin/xdvi-xaw'"
  '';
  # TODO: it's suspicious that mktexpk generates fonts into ~/.texlive2014
};

xpdfopen = stdenv.mkDerivation {
  pname = "xpdfopen";
  inherit (texlive.pkgs.xpdfopen) version;

  inherit (common) src;

  buildInputs = [ libX11 ];

  preConfigure = "cd utils/xpdfopen";

  enableParallelBuilding = true;
};

} # un-indented

// lib.optionalAttrs (!clisp.meta.broken) # broken on aarch64 and darwin (#20062)
{

xindy = stdenv.mkDerivation {
  pname = "xindy";
  inherit (texlive.pkgs.xindy) version;

  inherit (common) src;

  # If unset, xindy will try to mkdir /homeless-shelter
  HOME = ".";

  prePatch = "cd utils/xindy";
  # hardcode clisp location
  postPatch = ''
    substituteInPlace xindy-*/user-commands/xindy.in \
      --replace-fail "our \$clisp = ( \$is_windows ? 'clisp.exe' : 'clisp' ) ;" \
                     "our \$clisp = '$(type -P clisp)';"
  '';

  nativeBuildInputs = [
    pkg-config perl
    (texlive.combine { inherit (texlive) scheme-basic cyrillic ec; })
  ];
  buildInputs = [ clisp libiconv perl ];

  configureFlags = [ "--with-clisp-runtime=system" "--disable-xindy-docs" ];

  preInstall = ''mkdir -p "$out/bin" '';
  # fixup various file-location errors of: lib/xindy/{xindy.mem,modules/}
  postInstall = ''
    mkdir -p "$out/lib/xindy"
    mv "$out"/{bin/xindy.mem,lib/xindy/}
    ln -s ../../share/texmf-dist/xindy/modules "$out/lib/xindy/"
  '';
};

}