diff --git a/gpg-agent.conf b/gpg-agent.conf
index f8d276f..da68606 100644
--- a/gpg-agent.conf
+++ b/gpg-agent.conf
@@ -1,5 +1,3 @@
-#pinentry-program /usr/local/bin/pinentry
 pinentry-program /usr/local/bin/pinentry-mac
-#default-cache-ttl 600
 default-cache-ttl 86400
-max-cache-ttl 7200
+max-cache-ttl 86400
diff --git a/spacemacs b/spacemacs
index f8a100b..1998c8c 100644
--- a/spacemacs
+++ b/spacemacs
@@ -12,7 +12,7 @@
  dotspacemacs-configuration-layer-path '()
  ;; List of configuration layers to load. If it is the symbol `all' instead
  ;; of a list then all discovered layers will be installed.
- dotspacemacs-configuration-layers '(perforce git c-c++ haskell html javascript php markdown extra-langs company-mode (colors :variables colors-enable-rainbow-identifiers t) restclient evil-snipe mu4e)
+ dotspacemacs-configuration-layers '(perforce git c-c++ haskell html javascript php markdown extra-langs company-mode (colors :variables colors-enable-rainbow-identifiers t) restclient evil-snipe mu4e dustin)
  ;; A list of packages and/or extensions that will not be install and loaded.
  dotspacemacs-excluded-packages '(evil-escape)
  ;; If non-nil spacemacs will delete any orphan packages, i.e. packages that
diff --git a/spacemacs_private/dustin/extensions.el b/spacemacs_private/dustin/extensions.el
new file mode 100644
index 0000000..58545ac
--- /dev/null
+++ b/spacemacs_private/dustin/extensions.el
@@ -0,0 +1,33 @@
+;;; extensions.el --- dustin Layer extensions File for Spacemacs
+;;
+;; Copyright (c) 2012-2014 Sylvain Benner
+;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
+;;
+;; Author: Sylvain Benner <sylvain.benner@gmail.com>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+
+(defvar dustin-pre-extensions
+  '(
+    ;; pre extension dustins go here
+    )
+  "List of all extensions to load before the packages.")
+
+(defvar dustin-post-extensions
+  '(
+    ;; post extension dustins go here
+    )
+  "List of all extensions to load after the packages.")
+
+;; For each extension, define a function dustin/init-<extension-dustin>
+;;
+;; (defun dustin/init-my-extension ()
+;;   "Initialize my extension"
+;;   )
+;;
+;; Often the body of an initialize function uses `use-package'
+;; For more info on `use-package', see readme:
+;; https://github.com/jwiegley/use-package
diff --git a/spacemacs_private/dustin/packages.el b/spacemacs_private/dustin/packages.el
new file mode 100644
index 0000000..c1602ba
--- /dev/null
+++ b/spacemacs_private/dustin/packages.el
@@ -0,0 +1,32 @@
+;;; packages.el --- dustin Layer packages File for Spacemacs
+;;
+;; Copyright (c) 2012-2014 Sylvain Benner
+;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
+;;
+;; Author: Sylvain Benner <sylvain.benner@gmail.com>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+
+(defvar dustin-packages
+  '(
+    keychain-environment
+    )
+  "List of all packages to install and/or initialize. Built-in packages
+which require an initialization must be listed explicitly in the list.")
+
+(defvar dustin-excluded-packages '()
+  "List of packages to exclude.")
+
+;; For each package, define a function dustin/init-<package-dustin>
+;;
+(defun dustin/init-keychain-environment ()
+  "Initialize my package"
+  (keychain-refresh-environment)
+  )
+;;
+;; Often the body of an initialize function uses `use-package'
+;; For more info on `use-package', see readme:
+;; https://github.com/jwiegley/use-package