Add Asymptote and better org-mode LaTeX export

init.el

@@ -481,6 +481,15 @@
   :config
   (pdf-tools-install))
 
+(use-package auctex)
+
+(use-package asy-mode
+  :mode "\\.asy\\'"
+  :init
+  (with-eval-after-load 'latex-mode
+    (require 'asy-mode)
+    (asy-insinuate-latex-globally)))
+
 (defun my-double-space-sentence ()
   (setq-local sentence-end-double-space t))
 
@@ -502,18 +511,87 @@
                               (ruby . t)
                               (python . t)
                               (shell . t)
-                              (C . t)))
+                              (C . t)
+                              (asymptote . t)))
   (org-agenda-files '("~/Agenda"))
   ;; NixOS minimal LaTeX setup
   (org-latex-compiler "lualatex")
-  (org-preview-latex-default-process 'dvisvgm)
+  (org-preview-latex-default-process 'lua-dvisvgm)
   (org-latex-src-block-backend 'engraved)
   :config
-  (setq org-format-latex-options (plist-put org-format-latex-options :scale 1.1)
+  (setq org-format-latex-options (plist-put org-format-latex-options :scale 1.3)
         org-modules (append '(org-tempo org-habit) org-modules))
+  ;; Preview with lualatex to prevent errors when trying to load fontspec and
+  ;; others with pdflatex
+  (add-to-list
+   'org-preview-latex-process-alist
+   '(lua-dvisvgm :programs ("dvilualatex" "dvisvgm")
+                 :description "dvi > svg"
+                 :message "you need to install the programs: lualatex and dvisvgm"
+                 :image-input-type "dvi"
+                 :image-output-type "svg"
+                 :image-size-adjust (1.0 . 1.0)
+                 :latex-compiler ("dvilualatex -interaction nonstopmode -output-directory %o %f")
+                 :image-converter ("dvisvgm %f --no-fonts --exact-bbox --scale=%S --output=%O")))
+  (with-eval-after-load 'ox-latex
+    (add-to-list 'org-latex-classes
+                 '("apa6"
+                   "\\documentclass{apa6}"
+                   ("\\section{%s}" . "\\section*{%s}")
+                   ("\\subsection{%s}" . "\\subsection*{%s}")
+                   ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
+                   ("\\paragraph{%s}" . "\\paragraph*{%s}")
+                   ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
+    ;; HACK: apply the value of #+LATEX_CLASS to previews as well
+    (defun my--org-latex-make-preamble-change-class (args)
+      (if-let* (((> (length args) 1))
+                (template (nth 1 args)))
+          (let* ((info (car args))
+                 (class (plist-get info :latex-class))
+                 (class-options (plist-get info :latex-class-option))
+                 (header (nth 1 (assoc class (plist-get info :latex-classes))))
+                 (processed-header
+                  (if class-options
+                      (replace-regexp-in-string
+                       "^[ \t]*\\\\documentclass\\(\\(\\[[^]]*\\]\\)?\\)"
+                       class-options header t nil 1)
+                    header)))
+            (cl-list* info
+                      (string-replace "\\documentclass{article}" processed-header template)
+                      (cddr args)))
+        args))
+    (advice-add #'org-latex-make-preamble
+                :filter-args #'my--org-latex-make-preamble-change-class))
   (with-eval-after-load 'catppuccin-theme
     (face-spec-set 'org-block `((t (:foreground ,(catppuccin-get-color 'text)))))))
 
+(use-package ob-asymptote
+  :config
+  (defun org-babel-execute:asymptote (body params)
+    "Execute a block of Asymptote code.
+This function is called by `org-babel-execute-src-block'."
+    (let* ((out-file (cdr (assq :file params)))
+           (format (or (file-name-extension out-file)
+                       "pdf"))
+           (cmdline (cdr (assq :cmdline params)))
+           (in-file (org-babel-temp-file "asymptote-"))
+           (cmd
+	        (concat "asy "
+		            (if out-file
+		                (concat
+		                 "-globalwrite -f " format
+		                 " -o " (org-babel-process-file-name
+                                 (file-name-sans-extension out-file)))
+		              "-V")
+		            " " cmdline
+		            " " (org-babel-process-file-name in-file))))
+      (with-temp-file in-file
+        (insert (org-babel-expand-body:generic
+	             body params
+	             (org-babel-variable-assignments:asymptote params))))
+      (message cmd) (shell-command cmd)
+      nil)))
+
 (use-package org-alert
   :init
   (when (daemonp)