system-info: fetch default locale to the provided system info data.

rhodecode/apps/admin/views/system_info.py

@@ -112,6 +112,7 b' class AdminSystemInfoSettingsView(BaseAp'
             # Platform/Python
             (_('Platform'), val('platform')['name'], state('platform')),
             (_('Platform UUID'), val('platform')['uuid'], state('platform')),
+            (_('Lang'), val('locale'), state('locale')),
             (_('Python version'), val('python')['version'], state('python')),
             (_('Python path'), val('python')['executable'], state('python')),
             ('', '', ''),  # spacer

rhodecode/lib/system_info.py

@@ -142,6 +142,21 b' def platform_type():'
     return SysInfoRes(value=value)
 
 
+def locale_info():
+    import locale
+
+    value = dict(
+        locale_default=locale.getdefaultlocale(),
+        locale_lc_all=locale.getlocale(locale.LC_ALL),
+        lang_env=os.environ.get('LANG'),
+        lc_all_env=os.environ.get('LC_ALL'),
+        local_archive_env=os.environ.get('LOCALE_ARCHIVE'),
+    )
+    human_value = 'LANG: {}, locale LC_ALL: {},  Default locales: {}'.format(
+        value['lang_env'], value['locale_lc_all'], value['locale_default'])
+    return SysInfoRes(value=value, human_value=human_value)
+
+
 def ulimit_info():
     data = collections.OrderedDict([
         ('cpu time (seconds)', resource.getrlimit(resource.RLIMIT_CPU)),
@@ -712,7 +727,6 b' def usage_info():'
     return SysInfoRes(value=value)
 
 
-
 def get_system_info(environ):
     environ = environ or {}
     return {
@@ -723,6 +737,7 b' def get_system_info(environ):'
         'py_modules': SysInfo(py_modules)(),
 
         'platform': SysInfo(platform_type)(),
+        'locale': SysInfo(locale_info)(),
         'server': SysInfo(server_info, environ=environ)(),
         'database': SysInfo(database_info)(),
         'ulimit': SysInfo(ulimit_info)(),