feat: use flymake-popon instead of sideline-flymake

lisp/init-check.el

@@ -36,8 +36,7 @@
   :bind ("C-c f" . flymake-show-buffer-diagnostics)
   :hook (prog-mode . flymake-mode)
   :init (setq flymake-no-changes-timeout nil
-              flymake-fringe-indicator-position 'right-fringe
-              flymake-margin-indicator-position 'right-margin)
+              flymake-fringe-indicator-position 'right-fringe)
   :config
   ;; Check elisp with `load-path'
   (defun my-elisp-flymake-byte-compile (fn &rest args)
@@ -47,15 +46,14 @@
       (apply fn args)))
   (advice-add 'elisp-flymake-byte-compile :around #'my-elisp-flymake-byte-compile))
 
-(use-package sideline-flymake
-  :diminish sideline-mode
+(use-package flymake-popon
+  :diminish
   :custom-face
-  (sideline-flymake-error ((t (:height 0.85 :italic t))))
-  (sideline-flymake-warning ((t (:height 0.85 :italic t))))
-  (sideline-flymake-success ((t (:height 0.85 :italic t))))
-  :hook (flymake-mode . sideline-mode)
-  :init (setq sideline-flymake-display-mode 'point
-              sideline-backends-right '(sideline-flymake)))
+  (flymake-popon-posframe-border ((t :foreground ,(face-background 'region))))
+  :hook (flymake-mode . flymake-popon-mode)
+  :init (setq flymake-popon-width 70
+              flymake-popon-posframe-border-width 1
+              flymake-popon-method (if (childframe-workable-p) 'posframe 'popon)))
 
 (provide 'init-check)