mock streamparser

import apertium in setup.py,
causes import error, if apertium-streamparser isnt available during installation

Author: singh-lokendra

apertium/installer.py

@@ -115,7 +115,7 @@ def _download_package(package: str) -> None:
         execute.check_returncode()
 
     @staticmethod
-    def _rename_wrappers():
+    def _rename_wrappers() -> None:
         wrapper_name = {
             'python3-apertium': '_apertium_core',
             'python3-apertium-lex-tools': '_lextools',

setup.py

@@ -2,6 +2,8 @@
 from os import path
 from setuptools import find_packages, setup  # noqa: I202
 from setuptools.command.install import install
+import sys
+from unittest.mock import Mock
 
 
 class PostInstallCommand(install):
@@ -11,6 +13,9 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def _post_install():
+        # mock apertium-streamparser for importing apertium
+        sys.modules['streamparser'] = Mock()
+
         import apertium
         apertium.installer.install_apertium()
         apertium.installer.install_module('eng')