vconsole font selection to cover more langs

pyanaconda/modules/localization/installation.py

@@ -24,6 +24,7 @@
 from pyanaconda.core.constants import DEFAULT_VC_FONT
 from pyanaconda.modules.localization.localed import get_missing_keyboard_configuration
 from pyanaconda.anaconda_loggers import get_module_logger
+from pyanaconda.localization import get_locale_console_fonts
 
 log = get_module_logger(__name__)
 
@@ -194,12 +195,19 @@ def write_vc_configuration(vc_keymap, root):
     try:
         fpath = os.path.normpath(root + VC_CONF_FILE_PATH)
 
+        # "eurlatgr" may not be the best choice for all the languages,
+        # for example, Russian, Urdu, Serbian, Sindhi and a few more.
+        # refer: https://bugzilla.redhat.com/show_bug.cgi?id=1919486
+        # assuming that LANG is set by now.
+        vc_fonts = get_locale_console_fonts(os.environ["LANG"])
+        vc_font = vc_fonts[0] if vc_fonts else DEFAULT_VC_FONT
+
         with open(fpath, "w") as fobj:
             fobj.write('KEYMAP="%s"\n' % vc_keymap)
 
             # systemd now defaults to a font that cannot display non-ascii
             # characters, so we have to tell it to use a better one
-            fobj.write('FONT="%s"\n' % DEFAULT_VC_FONT)
+            fobj.write('FONT="%s"\n' % vc_font)
 
     except IOError as ioerr:
         msg = "Cannot write vconsole configuration file: {}".format(ioerr.strerror)

tests/nosetests/pyanaconda_tests/modules/localization/module_localization_test.py

@@ -691,6 +691,22 @@ def write_vc_configuration_test(self):
                     'KEYMAP="{}"\nFONT="{}"\n'.format(vc_keymap, DEFAULT_VC_FONT)
                 )
 
+    @patch.dict(os.environ, {"LANG": "ru_RU.UTF-8"})
+    def write_vc_configuration_env_test(self):
+        """Test write_vc_configuration function for latarcyr console font."""
+        with tempfile.TemporaryDirectory() as root:
+            vc_keymap = "ru"
+            vc_font = "latarcyrheb-sun16"
+            os.mkdir(os.path.join(root, "etc"))
+            write_vc_configuration(vc_keymap, root)
+            fpath = os.path.normpath(root + VC_CONF_FILE_PATH)
+            # Check the result.
+            with open(fpath) as f:
+                self.assertEqual(
+                    f.read(),
+                    'KEYMAP="{}"\nFONT="{}"\n'.format(vc_keymap, vc_font)
+                )
+
     def write_x_configuration_test(self):
         """Test write_x_configuration_test."""
         localed_wrapper = Mock()