fix(emacs): update notmuch integration

- Pin notmuch to the version that comes with Ubuntu and is installed with apt
- Add org-move capture integration
- Add unread message filter

site-modules/core/files/emacs/init.el

@@ -101,6 +101,7 @@
     ;; Email
     "e"		'(:ignore t :which-key "Email")
     "ei"    'aa/notmuch-search-inbox
+    "eu"    'aa/notmuch-search-inbox-unread
     "es"	'counsel-notmuch
     "en"	'notmuch
     "ej"	'notmuch-jump-search

site-modules/core/files/emacs/src/notmuch.el

@@ -6,6 +6,8 @@
 ;; licence that can be found in the LICENCE file or at
 ;; https://www.practically.io/copyright/
 
+(require 'cl)
+
 (defvar notmuch-message-deleted-tags '("+deleted" "-inbox" "-unread"))
 
 (defun spacemacs/notmuch-search-archive-thread-down ()
@@ -42,14 +44,26 @@
   (interactive)
   (notmuch-search "tag:inbox"))
 
-(use-package notmuch
-  :defer t
-  :commands notmuch
-  :config
+(defun aa/notmuch-search-inbox-unread ()
+  "Search the notmuch unread messages in the inbox."
+  (interactive)
+  (notmuch-search "tag:inbox and tag:unread"))
+
+
+(quelpa
+ '(notmuch :fetcher git
+		   :url "https://git.notmuchmail.org/git/notmuch"
+		   :commit "a59ef7d02cb229c2ec3569024918024003568aea"
+		   :files ("emacs/*.el" "emacs/*.png"))
+
   (setq notmuch-saved-searches '((:name "inbox"
 					:key "i"
 					:query "tag:inbox"
 					:sort-order newest-first)
+				 (:name "inbox-unread"
+					:key "iu"
+					:query "tag:inbox and tag:unread"
+					:sort-order newest-first)
 				 (:name "unread"
 					:key "u"
 					:query "tag:unread"
@@ -80,3 +94,29 @@
     "d" 'spacemacs/notmuch-message-delete-down))
 
 (use-package counsel-notmuch :defer t)
+
+(defun org-notmuch-open (id)
+  "Visit the notmuch message or thread with id ID."
+  (notmuch-show id))
+
+(defun org-notmuch-store-link ()
+  "Store a link to a notmuch mail message."
+  (cl-case major-mode
+    ('notmuch-show-mode
+     ;; Store link to the current message
+     (let* ((id (notmuch-show-get-message-id))
+	    (link (concat "notmuch:" id))
+	    (description (format "Mail: %s" (notmuch-show-get-subject))))
+       (org-store-link-props
+	:type "notmuch"
+	:link link
+	:description description)))
+    ('notmuch-search-mode
+     ;; Store link to the thread on the current line
+     (let* ((id (notmuch-search-find-thread-id))
+	    (link (concat "notmuch:" id))
+	    (description (format "Mail: %s" (notmuch-search-find-subject))))
+       (org-store-link-props
+	:type "notmuch"
+	:link link
+	:description description)))))