[PATCH 2/6] gnu: Add emacs-hydra.

[Ricardo Wurmus <rekado@elephly.net>]

* gnu/packages/emacs.scm (emacs-hydra): New variable.
---
 gnu/packages/emacs.scm | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index c12bf12..6741f58 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -1742,6 +1742,32 @@ splitting the input text by spaces and re-building it into a regular
 expression.")
     (license license:gpl3+)))
 
+(define-public emacs-hydra
+  (package
+    (name "emacs-hydra")
+    (version "0.13.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://github.com/abo-abo/hydra/archive/"
+                           version ".tar.gz"))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "19ynkjlg3jj7x90xxbz885324h6nkxmzlb2c2c95xkr20zckn0lk"))))
+    (build-system emacs-build-system)
+    (home-page "https://github.com/abo-abo/hydra")
+    (synopsis "Make bindings that stick around")
+    (description
+     "This package can be used to tie related commands into a family of short
+bindings with a common prefix---a Hydra.  Once you summon the Hydra (through
+the prefixed binding), all the heads can be called in succession with only a
+short extension.  Any binding that isn't the Hydra's head vanquishes the
+Hydra.  Note that Hercules, besides vanquishing the Hydra, will still serve
+his orignal purpose, calling his proper command.  This makes the Hydra very
+seamless, it's like a minor mode that disables itself automatically.")
+    (license license:gpl3+)))
+
 (define-public emacs-clojure-mode
   (package
     (name "emacs-clojure-mode")
-- 
2.8.3