From 9d7eef243fca8e53fb89bb17a999f0678d191caf Mon Sep 17 00:00:00 2001
From: Leo Famulari <address@hidden>
Date: Sun, 19 Mar 2017 02:43:37 -0400
Subject: [PATCH] gnu: address@hidden: Fix build failure due to missing
 libffi.

* gnu/packages/python.scm (python-2)[arguments]: Add 'setenv' phase.
(python2-minimal)[inputs]: Add zlib.

Co-authored-by: Danny Milosavljevic <address@hidden>
---
 gnu/packages/python.scm | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index be452f062..95bf53c8f 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -17,7 +17,7 @@
 ;;; Copyright © 2015, 2016 Efraim Flashner <address@hidden>
 ;;; Copyright © 2015 Kyle Meyer <address@hidden>
 ;;; Copyright © 2015, 2016 Chris Marusich <address@hidden>
-;;; Copyright © 2016 Danny Milosavljevic <address@hidden>
+;;; Copyright © 2016, 2017 Danny Milosavljevic <address@hidden>
 ;;; Copyright © 2016 Lukas Gradl <address@hidden>
 ;;; Copyright © 2016 Hartmut Goebel <address@hidden>
 ;;; Copyright © 2016 Daniel Pimentel <address@hidden>
@@ -223,6 +223,19 @@
              (setenv "HOME" (getcwd))
              #t))
           (add-after
+           'unpack 'setenv
+           (lambda _
+             ;; 'Modules/_ctypes/libffi/configure' contains scripts embedded in
+             ;; HEREDOCs whose shebangs aren't patched by the patch-shebang
+             ;; phase.  Setting this variables works around that shortcoming and
+             ;; allows us to keep using the bundled libffi in python-minimal and
+             ;; python2-minimal.
+             ;; XXX The bundled libffi will be removed in Python 3.7:
+             ;; https://bugs.python.org/issue27976
+             ;; https://github.com/python/cpython/commit/935043d1ac19d07ac48233c6175250e66a7bbebd
+             ;; https://github.com/python/cpython/commit/f40d4ddff3c800b3c956a5e8820aabe3aa87cddd
+             (setenv "CONFIG_SHELL" (which "sh"))))
+          (add-after
            'unpack 'set-source-file-times-to-1980
            ;; XXX One of the tests uses a ZIP library to pack up some of the
            ;; source tree, and fails with "ZIP does not support timestamps
@@ -363,7 +376,7 @@ data types.")
      (substitute-keyword-arguments (package-arguments python-2)
        ((#:configure-flags cf)
         `(append ,cf '("--without-system-ffi")))))
-    (inputs '())))                          ;none of the optional dependencies
+    (inputs `(("zlib" ,zlib)))))
 
 (define-public python-minimal
   (package (inherit python)
-- 
2.12.0