diff --git a/init.el b/init.el index e218db7..8b9ade5 100644 --- a/init.el +++ b/init.el @@ -35,7 +35,35 @@ PACKAGE is installed and the current version is deleted." (package-desc-vers (cdr pkg-desc))))) (package-install package)))) -(package-refresh-contents) +(defvar days-between-updates 1) +(defvar do-package-update-on-init t) + +(require 'time-stamp) +;; Open the 'user-init-file' and write any changes. +(with-temp-file user-init-file + ;; Insert it's original content's. + (insert-file-contents user-init-file) + (forward-line time-stamp-line-limit) + (let ((bound (point))) + (goto-char (point-min)) + ;; We search for the time-stamp. + (let ((start (re-search-forward time-stamp-start bound t)) + (end (re-search-forward time-stamp-end bound t))) + (when (and start end) + ;; Assuming we have found a time-stamp, we check determine if it's + ;; time to update. + (setq do-package-update-on-init + (<= days-between-updates + (days-between + (current-time-string) + (buffer-substring-no-properties start end)))) + ;; Remember to update the time-stamp. + (when do-package-update-on-init + (time-stamp)))))) + +(when do-package-update-on-init + (package-refresh-contents)) + (dolist (package '(ac-geiser ; Auto-complete backend for geiser ac-slime ; An auto-complete source using slime completions @@ -59,7 +87,8 @@ PACKAGE is installed and the current version is deleted." pretty-lambdada ; the word `lambda' as the Greek letter. smex ; M-x interface with Ido-style fuzzy matching. )) - (upgrade-or-install-package package)) + (when do-package-update-on-init + (upgrade-or-install-package package))) (dolist (feature '(auto-compile ; auto-compile .el files diff --git a/init.org b/init.org index 3fc3ff5..ac4ac54 100644 --- a/init.org +++ b/init.org @@ -83,12 +83,57 @@ (package-install package)))) #+END_SRC + The =package-refresh-contents= function downloads archive descriptions, + this is a major bottleneck in this configuration. To avoid this we can + try to only check for updates once every day or so. Here are to + variables. The first specifies how often we should check for updates. The + second specifies wither one should update during the initialization. + + #+BEGIN_SRC emacs-lisp :tangle yes + (defvar days-between-updates 1) + (defvar do-package-update-on-init t) + #+END_SRC + + The tricky part is figuring out when the last time the Emacs was updated! + Here is a hacky way of doing it, using [[http://www.gnu.org/software/emacs/manual/html_node/emacs/Time-Stamps.html][time-stamps]]. By adding a + time-stamp to the init file, we can search for it and determine wither or + not to do an update. After that we must run the =time-stamp=-function to + update the time-stamp. Note that if there is no time-stamp in the + init-file then packages will be updated every time you start Emacs. + + #+BEGIN_SRC emacs-lisp :tangle yes + (require 'time-stamp) + ;; Open the 'user-init-file' and write any changes. + (with-temp-file user-init-file + ;; Insert it's original content's. + (insert-file-contents user-init-file) + (forward-line time-stamp-line-limit) + (let ((bound (point))) + (goto-char (point-min)) + ;; We search for the time-stamp. + (let ((start (re-search-forward time-stamp-start bound t)) + (end (re-search-forward time-stamp-end bound t))) + (when (and start end) + ;; Assuming we have found a time-stamp, we check determine if it's + ;; time to update. + (setq do-package-update-on-init + (<= days-between-updates + (days-between + (current-time-string) + (buffer-substring-no-properties start end)))) + ;; Remember to update the time-stamp. + (when do-package-update-on-init + (time-stamp)))))) + #+END_SRC + Now we can use the function above to make sure packages are installed and up to date. Here are some packages I find useful (some of these configurations are also dependent on them). #+BEGIN_SRC emacs-lisp :tangle yes - (package-refresh-contents) + (when do-package-update-on-init + (package-refresh-contents)) + (dolist (package '(ac-geiser ; Auto-complete backend for geiser ac-slime ; An auto-complete source using slime completions @@ -112,7 +157,8 @@ pretty-lambdada ; the word `lambda' as the Greek letter. smex ; M-x interface with Ido-style fuzzy matching. )) - (upgrade-or-install-package package)) + (when do-package-update-on-init + (upgrade-or-install-package package))) #+END_SRC ** Require @@ -371,11 +417,11 @@ #+BEGIN_SRC emacs-lisp :tangle yes (defvar load-mail-setup nil) - + (when load-mail-setup ;; We need mu4e (require 'mu4e) - + ;; Some basic mu4e settings. (setq mu4e-maildir "~/.ifimail" ; top-level Maildir mu4e-sent-folder "/INBOX.Sent" ; folder for sent messages @@ -390,7 +436,7 @@ mu4e-html2text-command "html2text -utf8" ; use utf-8 ) - + ;; Setup for sending mail. (setq user-full-name "Lars Tveito" ; Your full name @@ -403,11 +449,11 @@ send-mail-function 'smtpmail-send-it ; Use smpt to send mail-user-agent 'mu4e-user-agent ; Use mu4e! ) - + ;; Register file types that can be handled by ImageMagick. (when (fboundp 'imagemagick-register-types) (imagemagick-register-types)) - + ;; A wrapper function to start (if necessary), fetch mail and delete other ;; windows. (defun show-mu4e () @@ -415,7 +461,7 @@ (mu4e) (mu4e-update-mail-and-index t) (delete-other-windows)) - + ;; Overwrite the native 'compose-mail' binding to 'show-mu4e'. (global-set-key (kbd "C-x m") 'show-mu4e)) #+END_SRC