[fix][arch] not stopping the upgrade process if a transaction error happens

bauh/commons/system.py

@@ -65,7 +65,7 @@ class SimpleProcess:
 
     def __init__(self, cmd: List[str], cwd: str = '.', expected_code: int = None,
                  global_interpreter: bool = USE_GLOBAL_INTERPRETER, lang: str = DEFAULT_LANG, root_password: str = None,
-                 extra_paths: Set[str] = None):
+                 extra_paths: Set[str] = None, error_phrases: Set[str] = None):
         pwdin, final_cmd = None, []
 
         if root_password is not None:
@@ -76,6 +76,7 @@ class SimpleProcess:
 
         self.instance = self._new(final_cmd, cwd, global_interpreter, lang, stdin=pwdin, extra_paths=extra_paths)
         self.expected_code = expected_code
+        self.error_phrases = error_phrases
 
     def _new(self, cmd: List[str], cwd: str, global_interpreter: bool, lang: str, stdin = None, extra_paths: Set[str] = None) -> subprocess.Popen:
 
@@ -175,8 +176,18 @@ class ProcessHandler:
                         
                     self._notify_watcher(line)
 
+        proc.instance.wait()
         output.seek(0)
-        return proc.instance.returncode == proc.expected_code, output.read()
+
+        success = proc.instance.returncode == proc.expected_code,
+        string_output = output.read()
+
+        if proc.error_phrases:
+            for phrase in proc.error_phrases:
+                if phrase in string_output:
+                    success = False
+                    break
+        return success, string_output
 
 
 def run_cmd(cmd: str, expected_code: int = 0, ignore_return_code: bool = False, print_error: bool = True,