pkg update and first config fix

org-brain not working, add org-roam

lisp/compat/compat-help.el

@@ -0,0 +1,57 @@
+;;; compat-help.el --- Documentation for compat functions  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022  Free Software Foundation, Inc.
+
+;; Author: Philip Kaludercic <philipk@posteo.net>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Load this file to insert `compat'-relevant documentation next to
+;; the regular documentation of a symbol.
+
+;;; Code:
+
+(defun compat---describe (symbol)
+  "Insert documentation for SYMBOL if it has compatibility code."
+  (let ((compat (get symbol 'compat-def)))
+    (when compat
+      (let ((doc (get compat 'compat-doc))
+            (start (point)))
+        (when doc
+          (insert "There is a ")
+          (insert-button
+           "compatibility notice"
+           'action (let ((type (get compat 'compat-type)))
+                     (cond
+                      ((memq type '(func macro advice))
+                       #'find-function)
+                      ((memq type '(variable))
+                       #'find-variable)
+                      ((error "Unknown type"))))
+           'button-data compat)
+          (insert (format " for %s (for versions of Emacs before %s):"
+                          (symbol-name symbol)
+                          (get compat 'compat-version)))
+          (add-text-properties start (point) '(face bold))
+          (newline 2)
+          (insert (substitute-command-keys doc))
+          (fill-region start (point))
+          (newline 2))))))
+
+(add-hook 'help-fns-describe-function-functions #'compat---describe)
+
+(provide 'compat-help)
+;;; compat-help.el ends here