# TeX Live

Since release 15.09 there is a new TeX Live packaging that lives entirely under attribute `texlive`.

## User's guide

- For basic usage just pull `texlive.combined.scheme-basic` for an environment with basic LaTeX support.

- It typically won't work to use separately installed packages together. Instead, you can build a custom set of packages like this:

      texlive.combine {
        inherit (texlive) scheme-small collection-langkorean algorithms cm-super;
      }

  There are all the schemes, collections and a few thousand packages, as defined upstream (perhaps with tiny differences).

- By default you only get executables and files needed during runtime, and a little documentation for the core packages. To change that, you need to add `pkgFilter` function to `combine`.

      texlive.combine {
        # inherit (texlive) whatever-you-want;
        pkgFilter = pkg:
          pkg.tlType == "run" || pkg.tlType == "bin" || pkg.pname == "cm-super";
        # elem tlType [ "run" "bin" "doc" "source" ]
        # there are also other attributes: version, name
      }

- You can list packages e.g. by `nix repl`.

      $ nix repl
      nix-repl> :l <nixpkgs>
      nix-repl> texlive.collection-<TAB>

- Note that the wrapper assumes that the result has a chance to be useful. For example, the core executables should be present, as well as some core data files. The supported way of ensuring this is by including some scheme, for example `scheme-basic`, into the combination.

## Custom packages

You may find that you need to use an external TeX package. A derivation for such package has to provide contents of the "texmf" directory in its output and provide the `tlType` attribute. Here is a (very verbose) example:

    with import <nixpkgs> {};

    let
      foiltex_run = stdenvNoCC.mkDerivation {
        pname = "latex-foiltex";
        version = "2.1.4b";
        passthru.tlType = "run";

        srcs = [
          (fetchurl {
            url = "http://mirrors.ctan.org/macros/latex/contrib/foiltex/foiltex.dtx";
            sha256 = "07frz0krpz7kkcwlayrwrj2a2pixmv0icbngyw92srp9fp23cqpz";
          })
          (fetchurl {
            url = "http://mirrors.ctan.org/macros/latex/contrib/foiltex/foiltex.ins";
            sha256 = "09wkyidxk3n3zvqxfs61wlypmbhi1pxmjdi1kns9n2ky8ykbff99";
          })
        ];

        unpackPhase = ''
          runHook preUnpack

          for _src in $srcs; do
            cp "$_src" $(stripHash "$_src")
          done

          runHook postUnpack
        '';

        nativeBuildInputs = [ texlive.combined.scheme-small ];

        dontConfigure = true;

        buildPhase = ''
          runHook preBuild

          # Generate the style files
          latex foiltex.ins

          runHook postBuild
        '';

        installPhase = ''
          runHook preInstall

          path="$out/tex/latex/foiltex"
          mkdir -p "$path"
          cp *.{cls,def,clo} "$path/"

          runHook postInstall
        '';

        meta = with lib; {
          description = "A LaTeX2e class for overhead transparencies";
          license = licenses.unfreeRedistributable;
          maintainers = with maintainers; [ veprbl ];
          platforms = platforms.all;
        };
      };
      foiltex = { pkgs = [ foiltex_run ]; };

      latex_with_foiltex = texlive.combine {
        inherit (texlive) scheme-small;
        inherit foiltex;
      };
    in
      runCommand "test.pdf" {
        nativeBuildInputs = [ latex_with_foiltex ];
      } ''
    cat >test.tex <<EOF
    \documentclass{foils}

    \title{Presentation title}
    \date{}

    \begin{document}
    \maketitle
    \end{document}
    EOF
      pdflatex test.tex
      cp test.pdf $out
    ''

## Known problems

- Some tools are still missing, e.g. luajittex;

- some apps aren't packaged/tested yet (asymptote, biber, etc.);

- feature/bug: when a package is rejected by `pkgFilter`, its dependencies are still propagated;

- in case of any bugs or feature requests, file a github issue or better a pull request and /cc @vcunat.