:after #'my-projectile-invalidate-cache))))
#+end_src
+** [[https://github.com/wasamasa/shackle][shackle]]
+
+#+begin_src emacs-lisp
+(use-package shackle
+ :demand t
+ :commands shackle-mode
+ :config
+ (shackle-mode 1)
+ (setq shackle-rules
+ '(("*Help*" :align right :select t :size 0.5)
+ ("\\`\\*helm.*?\\*\\'" :regexp t :align t)
+ ((compilation-mode "\\`\\*magit-diff: .*?\\'") :regexp t :noselect t)
+ ((inferior-scheme-mode "*shell*" "*eshell*") :popup t))
+ shackle-default-rule '(:select t)
+ shackle-default-size 0.4
+ shackle-inhibit-window-quit-on-same-windows t))
+#+end_src
+
+** [[https://github.com/Wilfred/helpful][helpful]]
+
+#+begin_src emacs-lisp
+(use-package helpful
+ :bind
+ (("C-h f" . helpful-callable)
+ ("C-h v" . helpful-variable)
+ ("C-h k" . helpful-key)
+ ("C-c C-d" . helpful-at-point)
+ ("C-h F" . helpful-function)
+ ("C-h C" . helpful-command)))
+#+end_src
+
* Email
** [[https://notmuchmail.org][notmuch]]