gnu: Add python-schema-salad.

* gnu/packages/bioinformatics.scm (python-schema-salad): New variable.

gnu/packages/bioinformatics.scm

@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2015, 2016, 2017, 2018 Ben Woodcroft <donttrustben@gmail.com>
-;;; Copyright © 2015, 2016 Pjotr Prins <pjotr.guix@thebird.nl>
+;;; Copyright © 2015, 2016, 2018, 2019, 2020 Pjotr Prins <pjotr.guix@thebird.nl>
 ;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2016, 2020 Roel Janssen <roel@gnu.org>
 ;;; Copyright © 2016, 2017, 2018, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
@@ -18,6 +18,7 @@
 ;;; Copyright © 2020 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
 ;;; Copyright © 2020 Pierre Langlois <pierre.langlois@gmx.com>
+;;; Copyright © 2020 Bonface Munyoki Kilyungi <bonfacemunyoki@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -112,10 +113,12 @@
   #:use-module (gnu packages popt)
   #:use-module (gnu packages protobuf)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages python-check)
   #:use-module (gnu packages python-compression)
   #:use-module (gnu packages python-science)
   #:use-module (gnu packages python-web)
   #:use-module (gnu packages python-xyz)
+  #:use-module (gnu packages rdf)
   #:use-module (gnu packages readline)
   #:use-module (gnu packages ruby)
   #:use-module (gnu packages serialization)
@@ -2579,6 +2582,42 @@ accessing bigWig files.")
 (define-public python2-pybigwig
   (package-with-python2 python-pybigwig))
 
+(define-public python-schema-salad
+  (package
+    (name "python-schema-salad")
+    (version "7.0.20200811075006")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (pypi-uri "schema-salad" version))
+        (sha256
+         (base32
+          "0wanbwmqb189x1m0vacnhpivfsr8rwbqknngivzxxs8j46yj80bg"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-cachecontrol" ,python-cachecontrol-0.11)
+       ("python-lockfile" ,python-lockfile)
+       ("python-mistune" ,python-mistune)
+       ("python-rdflib" ,python-rdflib)
+       ("python-rdflib-jsonld" ,python-rdflib-jsonld)
+       ("python-requests" ,python-requests)
+       ("python-ruamel.yaml" ,python-ruamel.yaml)
+       ("python-typing-extensions" ,python-typing-extensions)))
+    (native-inputs
+     `(("python-pytest" ,python-pytest)
+       ("python-pytest-runner" ,python-pytest-runner)))
+    (home-page "https://github.com/common-workflow-language/schema_salad")
+    (synopsis "Schema Annotations for Linked Avro Data (SALAD)")
+    (description
+     "Salad is a schema language for describing JSON or YAML structured linked
+data documents.  Salad schema describes rules for preprocessing, structural
+validation, and hyperlink checking for documents described by a Salad schema.
+Salad supports rich data modeling with inheritance, template specialization,
+object identifiers, object references, documentation generation, code
+generation, and transformation to RDF.  Salad provides a bridge between document
+and record oriented data modeling and the Semantic Web.")
+    (license license:asl2.0)))
+
 (define-public python-dendropy
   (package
     (name "python-dendropy")