From f0f6f9f6cf81b54a3bdb2a40d67006a8df7ef00e Mon Sep 17 00:00:00 2001
From: ng0 <ng0@infotropique.org>
Date: Wed, 11 Oct 2017 10:28:28 +0000
Subject: [PATCH] gnu: Add python-pynacl.
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* gnu/packages/crypto.scm (python-pynacl): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
---
 gnu/packages/crypto.scm | 39 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm
index 0f017888b2..8e3956a354 100644
--- a/gnu/packages/crypto.scm
+++ b/gnu/packages/crypto.scm
@@ -4,7 +4,7 @@
 ;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox>
 ;;; Copyright © 2016 Tobias Geerinckx-Rice <me@tobias.gr>
-;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
+;;; Copyright © 2016, 2017 ng0 <ng0@infotropique.org>
 ;;; Copyright © 2016, 2017 Eric Bavier <bavier@member.fsf.org>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -39,6 +39,7 @@ (define-module (gnu packages crypto)
   #:use-module (gnu packages nettle)
   #:use-module (gnu packages password-utils)
   #:use-module (gnu packages perl)
+  #:use-module (gnu packages python)
   #:use-module (gnu packages readline)
   #:use-module (gnu packages search)
   #:use-module (gnu packages serialization)
@@ -594,3 +595,39 @@ (define-public perl-math-random-secure
 data on your platform, so the seed itself will be as random as possible.
 @end enumerate\n")
     (license license:artistic2.0)))
+
+(define-public python-pynacl
+  (package
+    (name "python-pynacl")
+    (version "1.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "PyNaCl" version))
+       (modules '((guix build utils)))
+       ;; Remove bundled libsodium
+       (snippet '(delete-file-recursively "src/libsodium"))
+       (sha256
+        (base32
+         "135gz0020fqx8fbr9izpwyq49aww202nkqacq0cw61xz99sjpx9j"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'build 'use-system-sodium
+           (lambda _
+             (setenv "SODIUM_INSTALL" "system")
+             #t)))))
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
+    (propagated-inputs
+     `(("python-cffi" ,python-cffi)
+       ("python-six" ,python-six)
+       ("libsodium" ,libsodium)))
+    (home-page "https://github.com/pyca/pynacl/")
+    (synopsis "Python bindings to libsodium")
+    (description
+     "PyNaCl is a Python binding to libsodium, which is a fork of the
+Networking and Cryptography library.  These libraries have a stated goal
+of improving usability, security and speed.")
+    (license license:asl2.0)))