Add Emacs desktop provisioning and dev toolchain packages

Install Emacs and copy the desktop .emacs.d config so the editor setup is managed with the rest of desktop dotfiles. Add vterm/build/debug dependencies plus C/C++ and Go tooling needed by the configured workflow.

dotfiles/desktop/.emacs.d/lisp/misc/rss.el

@@ -0,0 +1,43 @@
+;;; rss.el -*-
+
+(use-package elfeed
+  :ensure t
+  :config
+  (defun elfeed-play-with-mpv ()
+    "Open the current elfeed entry link with mpv."
+    (interactive)
+    (let* ((entry (if (eq major-mode 'elfeed-show-mode)
+                      elfeed-show-entry
+                    (elfeed-search-selected :ignore-region)))
+           (url (and entry (elfeed-entry-link entry))))
+      (if url
+          (progn
+            (message "Opening with mpv: %s" url)
+            (start-process "mpv" nil "mpv" url))
+	(message "No URL found"))))
+  (define-key elfeed-search-mode-map (kbd "v") #'elfeed-play-with-mpv)
+  (define-key elfeed-show-mode-map   (kbd "v") #'elfeed-play-with-mpv)
+  :custom
+  (elfeed-enclosure-default-dir "~/Downloads/")
+  (elfeed-search-remain-on-entry t)
+  (elfeed-search-title-max-width 100)
+  (elfeed-search-title-min-width 30)
+  (elfeed-search-trailing-width 25)
+  (elfeed-show-truncate-long-urls t)
+  (elfeed-sort-order 'descending)
+  (elfeed-search-filter "+unread")
+  :hook
+  (elfeed-show-mode . visual-line-mode))
+
+(use-package elfeed-org
+  :ensure t
+  :after elfeed
+  :custom
+  ;; Optionally specify a number of files containing elfeed
+  ;; configuration. If not set then the location below is used.
+  ;; Note: The customize interface is also supported.
+  (rmh-elfeed-org-files (list "~/.emacs.d/elfeed.org")))
+
+(with-eval-after-load 'elfeed
+  (elfeed-org))
+