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#+TITLE: Literate config setup
* Preclude
My setup to produce a literate configuration. Allows me to write org files all
around the /doom-private-dir/ and access them. Also shaved like 0.2s off my
loading time.
* Remove function
When loading the lisp, we need to load everything excluding "config.el"
(preloaded by doom) and "literate.el" (loaded by "config.el"). We'll make a very
specific remove function that will remove entries from a given list and return
the new list, given the fact that the files variable will be a list of fully
expanded file names.
#+BEGIN_SRC elisp
(defun oreodave/literate/variadic-remove (remove-files files)
(let ((parsed-remove-files (map 'list #'(lambda (i) (expand-file-name (concat doom-private-dir i))) remove-files)))
(remove-if-not #'(lambda (l) (not (member l parsed-remove-files))) files)))
#+END_SRC
* Parser
First we need to get some sort of parser which can, given a source org file and
a destination, parse and produce an Emacs lisp file. We'll copy this from the
literate module of doom.
#+BEGIN_SRC elisp
(defun oreodave/literate/tangle (SRC DEST)
(let ((default-directory doom-private-dir))
(when (file-newer-than-file-p SRC DEST)
(let ((output (get-buffer-create "*org-tangle*")))
(unwind-protect
(or (and (zerop (call-process
"emacs" nil output nil
"-q" "--batch"
"-l" "ob-tangle"
"--eval" (format "(org-babel-tangle-file %S %S)"
SRC DEST)))
(with-current-buffer output
(message "%s" (buffer-string))
t))
(warn (format "Problem with tanging %S to %S" SRC DEST)))
(kill-buffer output))))))
#+END_SRC
* Procedure for all files
We need a procedure that parses all the org files in the doom-private-dir and
modules directory into Emacs lisp files, using the parser function we've made.
Assume all org files in the private directory contribute to the config.
#+BEGIN_SRC elisp
(defun oreodave/literate/tangle-all ()
(interactive)
(message "Starting compilation process")
(let ((files (directory-files-recursively "~/.doom.d/" ".org")))
(dolist (file files)
(message "Compiling and parsing %s" file)
(oreodave/literate/tangle file (replace-regexp-in-string ".org" ".el" file)))))
#+END_SRC
* Hook on save
Now we need to make a hook that, when the current buffer is an org file in the
doom directory, will run the literate config procedure from above.
#+BEGIN_SRC elisp
(defun oreodave/literate/compile-hook ()
(when (and (eq major-mode 'org-mode)
(or (file-in-directory-p buffer-file-name doom-private-dir)))
(oreodave/literate/tangle-all)))
#+END_SRC
* Add hook to org-mode
#+BEGIN_SRC elisp
(after! org
(add-hook 'after-save-hook #'oreodave/literate/compile-hook))
#+END_SRC
* Config run
Parse all Emacs lisp files. Then load them.
#+BEGIN_SRC elisp
(oreodave/literate/tangle-all) ; Parse
(let ((files (directory-files-recursively "~/.doom.d/" ".org"))) ; Load
(dolist (file (oreodave/literate/variadic-remove (list "config.org" "modules/literate.org") files))
(load! (replace-regexp-in-string ".org" ".el" file))))
#+END_SRC
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