improvement: replacing subprocess commands to detected installed CLIs by Python faster native calls (shutil.which)

bauh/view/core/controller.py

@@ -1,5 +1,6 @@
 import re
 import re
+import shutil
 import time
 import traceback
 from subprocess import Popen, STDOUT
@@ -16,7 +17,6 @@ from bauh.api.abstract.view import ViewComponent, TabGroupComponent, MessageType
 from bauh.api.exception import NoInternetException
 from bauh.commons.boot import CreateConfigFile
 from bauh.commons.html import bold
-from bauh.commons.system import run_cmd
 from bauh.view.core.config import CoreConfigManager
 from bauh.view.core.settings import GenericSettingsManager
 from bauh.view.core.update import check_for_update
@@ -71,7 +71,7 @@ class GenericSoftwareManager(SoftwareManager):
                                                            refresh=False): self.is_backups_action_available}
 
     def _is_timeshift_launcher_available(self) -> bool:
-        return bool(run_cmd('which timeshift-launcher', print_error=False))
+        return bool(shutil.which('timeshift-launcher'))
 
     def is_backups_action_available(self, app_config: dict) -> bool:
         return bool(app_config['backup']['enabled']) and self._is_timeshift_launcher_available()

bauh/view/core/downloader.py

@@ -1,6 +1,7 @@
 import logging
 import os
 import re
+import shutil
 import time
 import traceback
 from math import floor
@@ -29,15 +30,15 @@ class AdaptableFileDownloader(FileDownloader):
 
     @staticmethod
     def is_aria2c_available() -> bool:
-        return bool(run_cmd('which aria2c', print_error=False))
+        return bool(shutil.which('aria2c'))
 
     @staticmethod
     def is_axel_available() -> bool:
-        return bool(run_cmd('which axel', print_error=False))
+        return bool(shutil.which('axel'))
 
     @staticmethod
     def is_wget_available() -> bool:
-        return bool(run_cmd('which wget', print_error=False))
+        return bool(shutil.which('wget'))
 
     def _get_aria2c_process(self, url: str, output_path: str, cwd: str, root_password: str, threads: int) -> SimpleProcess:
         cmd = ['aria2c', url,

bauh/view/core/timeshift.py

@@ -1,8 +1,10 @@
-from bauh.commons.system import run_cmd, SimpleProcess
+import shutil
+
+from bauh.commons.system import SimpleProcess
 
 
 def is_available() -> bool:
-    return bool(run_cmd('which timeshift', print_error=False))
+    return bool(shutil.which('timeshift'))
 
 
 def delete_all_snapshots(root_password: str) -> SimpleProcess: