>From e64186082735f533bf172fcad491eaabed2928f0 Mon Sep 17 00:00:00 2001
From: Dave Love <address@hidden>
Date: Wed, 2 Aug 2017 13:39:28 +0100
Subject: [PATCH 4/4] gnu: libnl: Add "python2" and "python3" outputs.

* gnu/packages/linux.scm (libnl)[native-inputs]: Extend.
[outputs]: Add python2, python3.
[install-python]: New phase.
---
 gnu/packages/linux.scm | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 3902560a8..dd9c34999 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -101,6 +101,7 @@
   #:use-module (gnu packages xorg)
   #:use-module (gnu packages groff)
   #:use-module (gnu packages selinux)
+  #:use-module (gnu packages swig)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
@@ -1464,7 +1465,12 @@ transparently through a bridge.")
                 "1r3lw3hjvqxi5zqyq2w1qadm3gisd9nlf71dkl4yplacmssnhm3h"))))
     (build-system gnu-build-system)
     (native-inputs
-     `(("flex" ,flex) ("bison" ,bison)
+     `(("flex" ,flex)
+       ("bison" ,bison)
+       ("python-2" ,python-2)
+       ("python-3" ,python-3)
+       ("swig" ,swig)
+       ("pkg-config" ,pkg-config)
        ("libnl3-doc"
         ,(origin
            (method url-fetch)
@@ -1474,10 +1480,27 @@ transparently through a bridge.")
                  "/libnl-doc-" version ".tar.gz"))
            (sha256
             (base32 "0srab805yj8wb13l64qjyp3mdbqapxg5vk46v3zlhhzpmxqw8j7r"))))))
-    (outputs '("out" "doc"))
+    (outputs '("out" "doc" "python2" "python3"))
     (arguments
        `(#:phases
          (modify-phases %standard-phases
+           (add-after 'install 'install-python
+             (lambda* (#:key outputs #:allow-other-keys)
+               (define (python-inst python)
+                 (let ((ldflags (format #f "LDFLAGS=-Wl,-rpath=~a/lib"
+                                        (assoc-ref %outputs "out")))
+                       (pyout (assoc-ref %outputs python)))
+                   (and
+                    ;; The rpm spec quoth "build twice, otherwise capi.py is
+                    ;; not copied to the build directory"
+                    (zero? (system (format #f "~a ~a setup.py build"
+                                           ldflags python pyout)))
+                    (zero?
+                     (system (format #f "~a ~a setup.py install --prefix=~a"
+                                     ldflags python pyout)))
+                    (zero? (system* python "setup.py" "clean")))))
+               (with-directory-excursion "./python"
+                 (for-each python-inst '("python2" "python3")))))
            (add-after 'install 'install-doc
              (lambda* (#:key inputs outputs #:allow-other-keys)
                (let ((dest (format #f "~a/share/doc"
-- 
2.11.0