libselinux: Build selinux python package using setup.py

Originally, setup.py built selinux as a module. It caused problems with SWIG
generated python wrapper which used wrong path for importing binary module.

selinux is built as a python package now.

Fixes:
>>> import selinux
Traceback (most recent call last):
  File "/usr/lib64/python3.7/site-packages/selinux/__init__.py", line 14, in swig_import_helper
    return importlib.import_module(mname)
  File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named '_selinux'

0006-libselinux-Build-selinux-python-package-using-setup..patch

@@ -0,0 +1,86 @@
+From 8270e433f73fe295b6b938d6bbb9e400f9e6ad4c Mon Sep 17 00:00:00 2001
+From: Petr Lautrbach <plautrba@redhat.com>
+Date: Sat, 29 Jun 2019 22:37:29 +0200
+Subject: [PATCH 6/6] libselinux: Build selinux python package using setup.py
+
+Originally, setup.py built selinux as a module. It caused problems with SWIG
+generated python wrapper which used wrong path for importing binary module.
+
+selinux is built as a python package now.
+
+Fixes:
+>>> import selinux
+Traceback (most recent call last):
+  File "/usr/lib64/python3.7/site-packages/selinux/__init__.py", line 14, in swig_import_helper
+    return importlib.import_module(mname)
+  File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
+    return _bootstrap._gcd_import(name[level:], package, level)
+  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
+  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
+  File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
+ModuleNotFoundError: No module named '_selinux'
+
+Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
+---
+ libselinux/src/Makefile |  1 -
+ libselinux/src/setup.py | 21 ++++++++++++++++++++-
+ 2 files changed, 20 insertions(+), 2 deletions(-)
+
+diff --git a/libselinux/src/Makefile b/libselinux/src/Makefile
+index f64f23a8..db07dcb5 100644
+--- a/libselinux/src/Makefile
++++ b/libselinux/src/Makefile
+@@ -171,7 +171,6 @@ install: all
+ 
+ install-pywrap: pywrap
+ 	$(PYTHON) setup.py install --prefix=$(PREFIX) `test -n "$(DESTDIR)" && echo --root $(DESTDIR)`
+-	install -m 644 selinux.py $(DESTDIR)$(PYTHONLIBDIR)/selinux/__init__.py
+ 
+ install-rubywrap: rubywrap
+ 	test -d $(DESTDIR)$(RUBYINSTALL) || install -m 755 -d $(DESTDIR)$(RUBYINSTALL) 
+diff --git a/libselinux/src/setup.py b/libselinux/src/setup.py
+index b12e7869..1419aaa3 100644
+--- a/libselinux/src/setup.py
++++ b/libselinux/src/setup.py
+@@ -1,13 +1,29 @@
+ #!/usr/bin/python3
+ 
+ from distutils.core import Extension, setup
++from distutils.command.build_py import build_py
++
++import os
++import os.path
++
++class pre_build_py(build_py):
++    def run(self):
++
++        # create formal selinux package from selinux.py module
++        if os.path.isfile('selinux.py'):
++            if not os.path.isdir('selinux'):
++                os.mkdir('selinux')
++            os.rename('selinux.py', 'selinux/__init__py')
++
++        build_py.run(self)
+ 
+ setup(
+     name="selinux",
+     version="2.9",
+-    description="SELinux python 3 bindings",
++    description="SELinux python bindings",
+     author="SELinux Project",
+     author_email="selinux@vger.kernel.org",
++    packages=["selinux"],
+     ext_modules=[
+         Extension('selinux._selinux',
+                   sources=['selinuxswig_python.i'],
+@@ -21,4 +37,7 @@ setup(
+                   libraries=['selinux'],
+                   extra_link_args=['-l:libsepol.a'])
+     ],
++    cmdclass={
++        'build_py': pre_build_py
++    },
+ )
+-- 
+2.22.0
+

libselinux.spec

@@ -20,6 +20,7 @@ Patch0002: 0002-Verify-context-input-to-funtions-to-make-sure-the-co.patch
 Patch0003: 0003-libselinux-Allow-to-override-OVERRIDE_GETTID-from-co.patch
 Patch0004: 0004-libselinux-Use-Python-distutils-to-install-SELinux-p.patch
 Patch0005: 0005-libselinux-Do-not-use-SWIG_CFLAGS-when-Python-bindin.patch
+Patch0006: 0006-libselinux-Build-selinux-python-package-using-setup..patch
 BuildRequires: gcc
 BuildRequires: python2 python2-devel ruby-devel ruby libsepol-static >= %{libsepolver} swig pcre2-devel xz-devel
 BuildRequires: python3 python3-devel