gnu: Add python-jupyter-protocol.

* gnu/packages/jupyter.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

gnu/local.mk

@@ -270,6 +270,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/jrnl.scm				\
   %D%/packages/jose.scm				\
   %D%/packages/julia.scm			\
+  %D%/packages/jupyter.scm			\
   %D%/packages/kawa.scm				\
   %D%/packages/kde.scm				\
   %D%/packages/kde-frameworks.scm		\

gnu/packages/jupyter.scm

@@ -0,0 +1,57 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages jupyter)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system python)
+  #:use-module (gnu packages check)
+  #:use-module (gnu packages python)
+  #:use-module (gnu packages python-xyz)
+  #:use-module (gnu packages time))
+
+(define-public python-jupyter-protocol
+  (package
+    (name "python-jupyter-protocol")
+    (version "0.1.1")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "jupyter_protocol" version))
+              (sha256
+               (base32
+                "1bk3as5yw9y5nmq6l15nr46aby34phmvsx9kxgqnm5pd5q2b5h57"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-dateutil" ,python-dateutil)
+       ("python-jupyter-core" ,python-jupyter-core)
+       ("python-pyzmq" ,python-pyzmq)
+       ("python-traitlets" ,python-traitlets)))
+    (native-inputs
+     `(("python-ipykernel" ,python-ipykernel)
+       ("python-ipython" ,python-ipython)
+       ("python-mock" ,python-mock)
+       ("python-pytest" ,python-pytest)))
+    (home-page "https://jupyter.org")
+    (synopsis "Jupyter protocol implementation")
+    (description
+     "This Python library is an experimental implementation of the
+@uref{https://jupyter-client.readthedocs.io/en/latest/messaging.html, Jupyter
+protocol} to be used by both clients and kernels.")
+    (license license:bsd-3)
+    (properties '((upstream-name . "jupyter_protocol")))))