Make libselinux bindings optional.

.travis.yml

@@ -4,25 +4,17 @@
 
 language: python
 
-# These environments have to be spelled
+env:
-# out so that libselinux bindings get
+  - TOX_ENV=py27
-# the right Python version.
+  - TOX_ENV=py33
-matrix:
+  - TOX_ENV=py34
-  include:
+  - TOX_ENV=pep8
-    - python: "2.7"
+  - TOX_ENV=coverage
-      env: TOX_ENV=py27
+  - TOX_ENV=lint
-    - python: "3.3"
-      env: TOX_ENV=py33
-    - python: "3.4"
-      env: TOX_ENV=py34
-    - python: "3.3"
-      env: TOX_ENV=coverage
-    - env: TOX_ENV=pep8
-    - env: TOX_ENV=lint
 
+matrix:
   allow_failures:
-    - python: "3.3"
+    - env: TOX_ENV=coverage
-      env: TOX_ENV=coverage
 
 before_install:
   - lsb_release -a
@@ -58,9 +50,6 @@ before_install:
   #    error: declaration of 'index' shadows a global declarationo
   - sudo make CFLAGS="-O2 -pipe -fPIC -Wall" -C selinux-src install
 
-  # Install libselinux Python bindings.
-  - sudo make CFLAGS="-O2 -pipe -fPIC -Wall" -C selinux-src/libselinux install-pywrap
-
   # Ubuntu 12.04's flex generates a redundant decl in libqpol
   - sed -i -e "/Wwrite-strings/s/,/, '-Wno-redundant-decls',/" setup.py
 

README.md

@@ -17,7 +17,7 @@ To run SETools, the following packages are required:
 * Python 2.7 or 3.3+
 * NetworkX 1.8+
 * setuptools
-* libselinux (including Python bindings)
+* libselinux (Python bindings optional but recommended)
 * libbz2
 
 To build SETools, the following development packages are required, in

setools/policyrep/__init__.py

@@ -26,7 +26,10 @@ import logging
 from itertools import chain
 from errno import ENOENT
 
-import selinux
+try:
+    import selinux
+except ImportError:
+    pass
 
 from . import qpol
 
@@ -82,7 +85,10 @@ class SELinuxPolicy(object):
         if policyfile:
             self._load_policy(policyfile)
         else:
-            self._load_running_policy()
+            try:
+                self._load_running_policy()
+            except NameError:
+                raise RuntimeError("Loading the running policy requires libselinux Python bindings")
 
     def __repr__(self):
         return "<SELinuxPolicy(\"{0}\")>".format(self.filename)