Enable +elfeed-update-command to run only sometimes

init.el

@@ -1394,8 +1394,17 @@ See also `crux-reopen-as-root-mode'."
     (:hook #'reading-mode)
     (:option +elfeed--update-repeat (* 60 30) ; 1/2 hour
              +elfeed--update-first-time 60))
-  (+elfeed-update-async-mode -1)        ; It really messes with stuff for work
-  )
+  (+elfeed-update-async-mode +1)
+  (add-hook '+elfeed-update-proceed-hook (defun non-work-hours? ()
+                                           "Return nil if during work hours, t otherwise."
+                                           (let* ((now (current-time))
+                                                  (now* (decode-time now))
+                                                  (work-start* (append '(0 0 8) (cdddr now*))) ; 8:00 AM
+                                                  (work-end* (append '(0 0 18) (cdddr now*)))  ; 6:00 PM
+                                                  (work-start (encode-time work-start*))
+                                                  (work-end (encode-time work-end*)))
+                                             (or (time-less-p now work-start)
+                                                 (time-less-p work-end now))))))
 
 (setup (:straight elfeed-org)
   (:also-load +org-capture)

lisp/+elfeed.el

@@ -133,6 +133,19 @@ If multiple items are selected, don't advance."
 (defvar +elfeed--update-first-time 6 "How long to wait for the first time.")
 (defvar +elfeed--update-repeat (* 60 15) "How long between updates.")
 
+(defcustom +elfeed-update-proceed-hook nil
+  "Predicates to query before running `+elfeed-update-command'.
+Each hook is passed no arguments."
+  :type 'hook)
+
+(defun +elfeed-update-command-wrapper ()
+  "Run `+elfeed-update-command', but only sometimes.
+If any of the predicates in `+elfeed-update-proceed-hook' return
+nil, don't run `+elfeed-update-command'.  If they all return
+non-nil, proceed."
+  (when (run-hook-with-args-until-failure '+elfeed-update-proceed-hook)
+    (+elfeed-update-command)))
+
 (defun +elfeed--cancel-update-timer ()
   "Cancel `+elfeed--update-timer'."
   (unless +elfeed--update-running
@@ -142,12 +155,10 @@ If multiple items are selected, don't advance."
 (defun +elfeed--reinstate-update-timer ()
   "Reinstate `+elfeed--update-timer'."
   ;; First, unload the db
-  (elfeed-db-save)
-  (elfeed-db-unload)
   (setq +elfeed--update-timer
         (run-at-time +elfeed--update-first-time
                      +elfeed--update-repeat
-                     #'+elfeed-update-command)))
+                     #'+elfeed-update-command-wrapper)))
 
 (define-minor-mode +elfeed-update-async-mode
   "Minor mode to update elfeed async-style."