(define-public python-ruamel.yaml
  (package
    (name "python-ruamel.yaml")
    (version "0.15.16")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "ruamel.yaml" version))
       (sha256
        (base32
         "0yx1a1yqgm1phrmyvqzag5jwivn25ndlnwh2mgwgr7m8skn2h045"))))
    (build-system python-build-system)
    (arguments
     `(;; Tests fail with message:
       ;; ImportError: Failed to import test module: .ruamel
       ;; but the directory .ruamel exists in the environment
       ;; left when the package is built with --keep-failed
       #:tests? #f))
    (home-page "https://bitbucket.org/ruamel/yaml")
    (synopsis
     "A YAML 1.2 parser/emitter")
    (description
     "This package provides YAML parser/emitter that supports roundtrip
preservation of comments, seq/map flow style, and map key order.  It
is a derivative of Kirill Simonov’s PyYAML 3.11.  It supports YAML 1.2
and has round-trip loaders and dumpers. It supports comments. Block
style and key ordering are kept, so you can diff the source.")
    (license license:expat)))

(define-public python2-ruamel.yaml
  (package-with-python2 python-ruamel.yaml))