It’s so pleasant to use [[nix]] to install and config complex software packages.

Here is how to make emacs org work with latex

config-latex.nix

# https://nixos.wiki/wiki/TexLive
# For a minimal set of packages needed for Emacs Orgmode
{ pkgs, lib, ... }:
let
  tex = (pkgs.texlive.combine {
    inherit (pkgs.texlive)
      scheme-basic dvisvgm dvipng # for preview and export as html
      wrapfig amsmath ulem hyperref capt-of fontspec;
  });
in { home.packages = lib.mkBefore [ tex ]; }

doom-emacs packages.el

(package! org-fragtog)

doom-emacs config.el

(use-package! org-fragtog
  :config
  (add-hook 'org-mode-hook 'org-fragtog-mode))

(after! org
  (setq org-preview-latex-default-process 'dvisvgm)
  (setq org-startup-with-latex-preview t))