TexLive

According to Wikipedia:

TeX Live is a free software distribution for the TeX typesetting system that includes major TeX-related programs, macro packages, and fonts.

Installation

Since TeX Live consist of thousands of packages, to make managing it easier, NixOS replicates the organization of TeX Live into 'schemes' and 'collections'

The following Tex Live schemes are available:

Name of TeX Live package	Name of Nixos-derivation	Comment
Scheme-full	nixpkgs.texlive.combined.scheme-full	Contains every TeX Live package
Scheme-medium	nixpkgs.texlive.combined.scheme-medium	contains everything in the small scheme + more packages and languages
Scheme-small	nixpkgs.texlive.combined.scheme-small	contains everything in the basic scheme + xetex, metapost, a few languages.
Scheme-basic	nixpkgs.texlive.combined.scheme-basic	contains everything in the plain scheme but includes latex.
Scheme-minimal	nixpkgs.texlive.combined.scheme-minimal	contains plain only.
Scheme-teTeX	nixpkgs.texlive.combined.scheme-tetex	contains more than the medium scheme, but nowhere near the full scheme.
Scheme-ConTeXt	nixpkgs.texlive.combined.scheme-context	contains ConTeXt
Scheme-GUST	nixpkgs.texlive.combined.scheme-gust	contains gust

Combine Sets

You can install a set with extra packages by using something like

(texlive.combine { inherit (texlive) scheme-medium xifthen ifmtarg framed paralist titlesec; })

For a minimal set of packages needed for Emacs Orgmode, as described in org-latex-default-packages-alist variable, install these packages:

{ config, pkgs, ... }:
let
  tex = (pkgs.texlive.combine {
    inherit (pkgs.texlive) scheme-basic
      dvisvgm dvipng # for preview and export as html
      wrapfig amsmath ulem hyperref capt-of;
      #(setq org-latex-compiler "lualatex")
      #(setq org-preview-latex-default-process 'dvisvgm)
  });
in
{ # home-manager
  home.packages = with pkgs; [
    tex
  ];
}

Troubleshooting

Missing lmodern.sty

If LaTex (perhaps through Pandoc) complains about missing lmodern.sty, make sure you have at least texlive.combined.scheme-medium installed (-full should work as well; while -small worked for some, but not for all).

Invalid fontname ‘Latin Modern Roman/ICU’

If you get an error message saying “Invalid fontname ‘Latin Modern Roman/ICU’. . . ”, then you need to add the entry lmodern into your configuration in the section fonts.fonts and rebuild.

Further reading

• The Tex Live Guide 2018
• Tex in NixOS-Wiki
• Building LaTeX Documents Reproducibly with Nix Flakes