[PATCH 6/7] gnu: Add python-ruamel.yaml.

[contact . ng0]

From: ng0 <address@hidden>

* gnu/packages/python.scm (python-ruamel.yaml): New variable.
---
 gnu/packages/python.scm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 285207543..583f57b6f 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -2845,6 +2845,41 @@ object.")
 (define-public python2-pyyaml
   (package-with-python2 python-pyyaml))
 
+(define-public python-ruamel.yaml
+  (package
+    (name "python-ruamel.yaml")
+    (version "0.12.14")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "ruamel.yaml" version))
+       (sha256
+        (base32
+         "1w23nqswsq083xc0qpkw764n1a4v5g9p4fz1jkp6xbrzr9mrkqp7"))))
+    (build-system python-build-system)
+    (arguments
+     `(;; Otherwise it complains that you have to do "pypi install ."
+       #:configure-flags (list "--single-version-externally-managed"
+                               "--record=ruamel.yaml.txt")))
+    (inputs
+     `(("python-typing" ,python-typing)))
+    (home-page "https://bitbucket.org/ruamel/yaml";)
+    (synopsis "YAML 1.2 loader/dumper package for Python")
+    (description
+     "@code{ruamel.yaml} is a YAML 1.2 parser/emitter that supports roundtrip
+preservation of comments, seq/map flow style, and map key order.")
+    (license license:expat)))
+
+(define-public python2-ruamel.yaml
+  (package (inherit (package-with-python2
+                     (strip-python2-variant python-ruamel.yaml)))
+    (name "python2-ruamel.yaml")
+    (inputs
+     `(("python2-ruamel.ordereddict" ,python2-ruamel.ordereddict)
+       ("python2-typing" ,python2-typing)))
+    (native-inputs
+     `(("python2-setuptools" ,python2-setuptools)))))
+
 (define-public python-virtualenv
   (package
     (name "python-virtualenv")
-- 
2.11.0