prevent using svn when Mac does not have xcode-tools installed

setup.py

@@ -38,7 +38,6 @@ setup(
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Natural Language :: English',
-        'Programming Language :: Python',
         'Topic :: Text Editors',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',

wakatime/projects/subversion.py

@@ -62,6 +62,7 @@ class Subversion(BaseProject):
 
     def _get_info(self, path):
         info = OrderedDict()
+        if not self._is_mac() or self._has_xcode_tools():
             stdout = None
             try:
                 os.environ['LANG'] = 'en_US'
@@ -97,3 +98,18 @@ class Subversion(BaseProject):
             return found
         return self._find_project_base(split_path[0], found)
 
+    def _is_mac(self):
+        return platform.system() == 'Darwin'
+
+    def _has_xcode_tools(self):
+        try:
+            with open(os.devnull, 'wb') as DEVNULL:
+                proc = Popen(['/usr/bin/xcode-select', '-p'], stdout=DEVNULL, stderr=DEVNULL)
+                proc.communicate()
+                retval = proc.wait()
+                if retval == 0:
+                    return True
+        except:
+            pass
+        return False
+