add init.org, use org-mode tangle to build init.el

Signed-off-by: Frieder Schlesier <frieder@fschl.de>

init.el

@@ -1,3 +1,7 @@
+;;; init.el -- Fschl Crafted Emacs user customization file -*- lexical-binding: t; -*-
+;; This file is generated from init.org. If you want to edit the
+;; configuration, DO NOT edit init.el, edit init.org, instead.
+
 (setq user-emacs-directory "~/.config/crafted-emacs-configdir/")
 (setq crafted-emacs-home "~/src/crafted-emacs/")
 (setq custom-file (expand-file-name "custom.el" user-emacs-directory))
@@ -5,21 +9,35 @@
            (file-exists-p custom-file))
   (load custom-file nil :nomessage))
 
-(load "~/src/crafted-emacs/modules/crafted-init-config")
+(load (expand-file-name "modules/crafted-init-config" crafted-emacs-home))
 
 (require 'crafted-completion-packages)
 (require 'crafted-evil-packages)
 (require 'crafted-org-packages)
 (require 'crafted-ui-packages)
+(require 'crafted-ide-packages)
+
 (package-install-selected-packages :noconfirm)
 
 (require 'crafted-defaults-config)
 (require 'crafted-startup-config)
 (require 'crafted-completion-config)
-(require 'crafted-ui-config)
-(require 'crafted-org-config)
 (require 'crafted-evil-config)
+(require 'crafted-org-config)
+(require 'crafted-ui-config)
+(require 'crafted-ide-config)
 
 (unless crafted-startup-inhibit-splash
   (setq initial-buffer-choice #'crafted-startup-screen))
 
+;; Tangle the code blocks to config.el on save.
+(defun org-babel-tangle-config ()
+  (when (string-equal (buffer-file-name)
+                      (expand-file-name "init.org" user-emacs-directory))
+    ;; Dynamic scoping to the rescue
+    (let ((org-confirm-babel-evaluate nil))
+      (org-babel-tangle))))
+
+(add-hook 'org-mode-hook
+          (lambda ()
+            (add-hook 'after-save-hook #'org-babel-tangle-config)))

init.org

@@ -0,0 +1,66 @@
+#+title: Setup Crafted Emacs User Configuration File
+#+PROPERTY: header-args:emacs-lisp :tangle ./init.el :mkdirp yes
+
+* Basic configuration
+
+** Set import directories for =crafted-emacs=
+#+begin_src emacs-lisp
+  ;;; init.el -- Fschl Crafted Emacs user customization file -*- lexical-binding: t; -*-
+  ;; This file is generated from init.org. If you want to edit the
+  ;; configuration, DO NOT edit init.el, edit init.org, instead.
+
+  (setq user-emacs-directory "~/.config/crafted-emacs-configdir/")
+  (setq crafted-emacs-home "~/src/crafted-emacs/")
+  (setq custom-file (expand-file-name "custom.el" user-emacs-directory))
+  (when (and custom-file
+             (file-exists-p custom-file))
+    (load custom-file nil :nomessage))
+
+  (load (expand-file-name "modules/crafted-init-config" crafted-emacs-home))
+#+end_src
+
+** Add selected =crafted-emacs= packages
+#+begin_src emacs-lisp
+  (require 'crafted-completion-packages)
+  (require 'crafted-evil-packages)
+  (require 'crafted-org-packages)
+  (require 'crafted-ui-packages)
+  (require 'crafted-ide-packages)
+
+  (package-install-selected-packages :noconfirm)
+#+end_src
+
+** Load selected =crafted-emacs= packages
+#+begin_src emacs-lisp
+  (require 'crafted-defaults-config)
+  (require 'crafted-startup-config)
+  (require 'crafted-completion-config)
+  (require 'crafted-evil-config)
+  (require 'crafted-org-config)
+  (require 'crafted-ui-config)
+  (require 'crafted-ide-config)
+
+  (unless crafted-startup-inhibit-splash
+    (setq initial-buffer-choice #'crafted-startup-screen))
+#+end_src
+
+** Auto-tangle on save
+
+Whenever you edit =init.org= in Emacs and save it, it updates =init.el= in
+the same directory.
+
+See the [[https://orgmode.org/manual/Extracting-Source-Code.html][Org Manual]] for details and alternatives.
+
+#+begin_src emacs-lisp
+  ;; Tangle the code blocks to config.el on save.
+  (defun org-babel-tangle-config ()
+    (when (string-equal (buffer-file-name)
+                        (expand-file-name "init.org" user-emacs-directory))
+      ;; Dynamic scoping to the rescue
+      (let ((org-confirm-babel-evaluate nil))
+        (org-babel-tangle))))
+
+  (add-hook 'org-mode-hook
+            (lambda ()
+              (add-hook 'after-save-hook #'org-babel-tangle-config)))
+#+end_src