use process sentinel

init/dot.emacs.el

@@ -1,6 +1,35 @@
 (require 'cl-lib)
+(require 'comint)
+
+(defvar emacs-start-kit "The name of emacs startkit we will use")
+(defvar emacs-config-name "The directory name of emacs startkit")
+(defvar emacs-config-directory "The based directory of emacs start configuration")
+(defvar emacs-init-file "The full path of emacs start file")
+(defvar startkit-info "Information to install emacs startkit")
+
+(setq emacs-start-kit
+      (let ((start-kit (getenv "EMACS_STARTKIT")))
+        (if start-kit
+            start-kit
+          "spacemacs")))
+
+(setq emacs-config-name emacs-start-kit)
+
+(setq emacs-config-directory
+  (let ((config-dir (getenv "EMACS_CONFIG_DIR")))
+    (if config-dir
+        (concat config-dir "/" emacs-config-name "/")
+      (concat (substitute-in-file-name "~/.config/emacs/")
+              emacs-config-name "/"))))
+
+(unless (file-exists-p emacs-config-directory)
+  (make-directory emacs-config-directory t))
+
+(setq user-emacs-directory emacs-config-directory)
+
+(setq emacs-init-file
+      (expand-file-name "init.el" user-emacs-directory))
 
-(setq installation-done-stat-file "/tmp/.emacs.install.ok")
 (setq startkit-info
       '((doom-emacs .
                     (lambda (dir)
@@ -34,54 +63,27 @@
                      (list
                       (concat "git clone https://github.com/syl20bnr/spacemacs.git " dir))))))
 
+(defun on-installer-finished (process event)
+  "Callback function when uinstaller process has finished."
+  (cond
+   ((string= event "finished\n") (load-file emacs-init-file))
+   (t (message "Event %s has been ignored" event))))
+
 (defun install-emacs-startkit (name location)
-  (progn (require 'comint)
+  (progn (let* ((shell-buffer (make-comint-in-buffer "installer" nil "/bin/sh"))
-         (let* ((shell-buffer (make-comint-in-buffer "installer" nil "/bin/sh"))
                 (shell-process (get-buffer-process shell-buffer)))
            (progn
+             (set-process-sentinel shell-process 'on-installer-finished)
              (display-buffer shell-buffer)
              (cl-loop for cmd in (funcall (cdr (assoc (intern name) startkit-info)) location)
                       do (comint-simple-send shell-process (concat cmd "\n")))
-             (comint-simple-send shell-process (concat "touch " installation-done-stat-file "\n"))
              (comint-simple-send shell-process "exit\n")))))
 
-(setq emacs-start-kit
-       (let ((start-kit (getenv "EMACS_STARTKIT")))
-         (if start-kit
-             start-kit
-           "spacemacs")))
-
-(setq emacs-config-name emacs-start-kit)
-
-(setq emacs-config-directory
-      (let ((config-dir (getenv "EMACS_CONFIG_DIR")))
-        (if config-dir
-            (concat config-dir "/" emacs-config-name "/")
-          (concat (substitute-in-file-name "~/.config/emacs/")
-                  emacs-config-name "/"))))
-
-(unless (file-exists-p emacs-config-directory)
-  (make-directory emacs-config-directory t))
-
-(setq user-emacs-directory emacs-config-directory)
-
-(setq emacs-init-file
-      (expand-file-name "init.el" user-emacs-directory))
-
-(defun load-emacs-init-idle ()
-  (if (file-exists-p installation-done-stat-file)
-      (when (file-exists-p emacs-init-file)
-        (load-file emacs-init-file)
-        (delete-file installation-done-stat-file))
-    (progn 
-      (run-with-idle-timer 5 nil #'load-emacs-init-idle))))
-
 (if (not (file-exists-p emacs-init-file))
     (progn
-      (if (file-exists-p installation-done-stat-file)
-          (delete-file installation-done-stat-file))
-      (run-with-idle-timer 5 nil #'load-emacs-init-idle)
       (install-emacs-startkit emacs-start-kit
                               emacs-config-directory))
   (load-file emacs-init-file))
-  
+
+(provide 'dot.emacs)
+;;; dot.emacs.el ends here