gnu: Add sala.

* gnu/packages/password-utils.scm (sala): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/password-utils.scm

@@ -16,6 +16,7 @@
 ;;; Copyright © 2017 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
 ;;; Copyright © 2017 Rutger Helling <rhelling@mykolab.com>
 ;;; Copyright © 2018 Marius Bakke <mbakke@fastmail.com>
+;;; Copyright © 2018 Konrad Hinsen <konrad.hinsen@fastmail.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -612,3 +613,31 @@ password hash types most commonly found on various Unix systems, supported out
 of the box are Windows LM hashes, plus lots of other hashes and ciphers.  This
 is the community-enhanced, \"jumbo\" version of John the Ripper.")
       (license license:gpl2+))))
+
+(define-public sala
+  (package
+    (name "sala")
+    (version "1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "sala" version))
+       (sha256
+        (base32
+         "13qgmc3i2a0cqp8jqrfl93lnphfagb32pgfikc1gza2a14asxzi8"))))
+    (build-system python-build-system)
+    (arguments
+     ;; Sala is supposed to work with Python 3.2 or higher,
+     ;; but it doesn't work with Python 3.6. Better stick
+     ;; to Python 2, which works fine.
+     `(#:python ,python-2))
+    (propagated-inputs
+     `(("gnupg" ,gnupg)
+       ("pwgen" ,pwgen)))
+    (home-page "http://www.digip.org/sala/")
+    (synopsis "Encrypted plaintext password store")
+    (description
+     "Store passwords and other bits of sensitive plain-text information
+to encrypted files on a directory hierarchy.  The information is protected
+by GnuPG's symmetrical encryption.")
+    (license license:expat)))