gnu: Add ruby-rspec-pending-for.

* gnu/packages/ruby.scm (ruby-rspec-pending-for): New variable.

gnu/packages/ruby.scm

@@ -929,6 +929,30 @@ support for stubbing and mocking.")
     (propagated-inputs
      (list ruby-diff-lcs))))
 
+(define-public ruby-rspec-pending-for
+  (package
+    (name "ruby-rspec-pending-for")
+    (version "0.1.16")
+    (source (origin
+              (method git-fetch)        ;for tests
+              (uri (git-reference
+                    (url "https://github.com/pboling/rspec-pending_for")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "107l560vm0kx25w5iy5rsk9ly8dxzr81b31284j514f4hkd0qv3m"))))
+    (build-system ruby-build-system)
+    (native-inputs (list ruby-rspec ruby-simplecov))
+    (propagated-inputs (list ruby-rspec-core ruby-ruby-engine
+                             ruby-ruby-version))
+    (synopsis "Skip RSpec tests for specific Ruby engines or versions")
+    (description "This RSpec plugin makes it easy to mark test cases as
+pending or skipped for a specific Ruby engine (e.g. MRI or JRuby) or version
+combinations.")
+    (home-page "https://github.com/pboling/rspec-pending_for")
+    (license license:expat)))
+
 (define-public ruby-rspec-rerun
   (package
     (name "ruby-rspec-rerun")