gnu: Add python2-subprocess32.

* gnu/packages/python.scm (python2-subprocess32): New variable.
* gnu/packages/patches/python2-subprocess32-disable-input-test.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/local.mk

@@ -871,6 +871,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/python-pycrypto-CVE-2013-7459.patch	\
   %D%/packages/patches/python2-pygobject-2-gi-info-type-error-domain.patch \
   %D%/packages/patches/python-pygpgme-fix-pinentry-tests.patch	\
+  %D%/packages/patches/python2-subprocess32-disable-input-test.patch	\
   %D%/packages/patches/qemu-CVE-2016-10155.patch			\
   %D%/packages/patches/qemu-CVE-2017-2615.patch			\
   %D%/packages/patches/qemu-CVE-2017-5525.patch			\

gnu/packages/patches/python2-subprocess32-disable-input-test.patch

@@ -0,0 +1,18 @@
+This test tries to send a KeyboardInterrupt, which does
+not work in the build environment.
+
+--- a/test_subprocess32.py	2017-03-06 22:21:49.334045485 +0100
++++ b/test_subprocess32.py	2017-03-06 22:22:02.490439949 +0100
+@@ -1299,12 +1299,6 @@
+         getattr(p, method)(*args)
+         return p
+ 
+-    def test_send_signal(self):
+-        p = self._kill_process('send_signal', signal.SIGINT)
+-        _, stderr = p.communicate()
+-        self.assertIn('KeyboardInterrupt', stderr)
+-        self.assertNotEqual(p.wait(), 0)
+-
+     def test_kill(self):
+         p = self._kill_process('kill')
+         _, stderr = p.communicate()

gnu/packages/python.scm

@@ -9044,6 +9044,47 @@ authenticated session objects providing things like keep-alive.")
 3.2.3 for use with older versions of Python and PyPy.")
     (license license:expat)))
 
+(define-public python2-subprocess32
+  (package
+    (name "python2-subprocess32")
+    (version "3.2.7")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "subprocess32" version))
+              (sha256
+               (base32
+                "14350dhhlhyz5gqzi3lihn9m6lvskx5mcb20srx1kgsk9i50li8y"))
+              (patches
+               (search-patches "python2-subprocess32-disable-input-test.patch"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:python ,python-2
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-/bin/sh
+           (lambda _
+             (substitute* '("subprocess32.py"
+                            "test_subprocess32.py")
+               (("/bin/sh") (which "sh")))
+             #t))
+         (delete 'check)
+         (add-after 'install 'check
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             ;; For some reason this package fails to import
+             ;; _posixsubprocess.so when PYTHONPATH is set to the build
+             ;; directory. Running tests after install is easier.
+             (add-installed-pythonpath inputs outputs)
+             (zero? (system* "python" "test_subprocess32.py")))))))
+    (home-page "https://github.com/google/python-subprocess32")
+    (synopsis "Backport of the subprocess module from Python 3.2")
+    (description
+     "This is a backport of the @code{subprocess} standard library module
+from Python 3.2 and 3.3 for use on Python 2.  It includes bugfixes and some
+new features.  On POSIX systems it is guaranteed to be reliable when used
+in threaded applications.  It includes timeout support from Python 3.3 but
+otherwise matches 3.2’s API.")
+    (license license:psfl)))
+
 (define-public python2-futures
   (package
     (name "python2-futures")