Fix pkg support module

Author: twangboy

tests/support/pkg.py

@@ -445,18 +445,12 @@ def _install_pkgs(self, upgrade=False, downgrade=False):
             if pkg.endswith("exe"):
                 # Install the package
                 log.debug("Installing: %s", str(pkg))
-                ps_cmd = (
-                    f'$p = Start-Process -FilePath "{str(pkg)}" -ArgumentList '
-                    f'"/start-minion=0","/S" -Wait -NoNewWindow -Passthru; '
-                    f"exit $p.ExitCode"
-                )
-                ret = self.proc.run(
-                    "powershell.exe",
-                    "-ExecutionPolicy",
-                    "Bypass",
-                    "-Command",
-                    f"'{ps_cmd}'",
-                )
+                batch_file = pathlib.Path(pkg).parent / "install_nsis.cmd"
+                batch_content = f'start "" /wait {str(pkg)} /start-minion=0 /S'
+                with salt.utils.files.fopen(batch_file, "w") as fp:
+                    fp.write(batch_content)
+                # Now run the batch file
+                ret = self.proc.run("cmd.exe", "/c", str(batch_file))
                 self._check_retcode(ret)
             elif pkg.endswith("msi"):
                 # Install the package
@@ -819,18 +813,12 @@ def install_previous(self, downgrade=False):
                 ret = self.proc.run("cmd.exe", "/c", str(batch_file))
                 self._check_retcode(ret)
             else:
-                ps_cmd = (
-                    f'$p = Start-Process -FilePath "{str(pkg_path)}" '
-                    f'-ArgumentList "/start-minion=0","/S" -Wait -NoNewWindow '
-                    f"-Passthru; exit $p.ExitCode"
-                )
-                ret = self.proc.run(
-                    "powershell.exe",
-                    "-ExecutionPolicy",
-                    "Bypass",
-                    "-Command",
-                    f"'{ps_cmd}'",
-                )
+                batch_file = pkg_path.parent / "install_nsis.cmd"
+                batch_content = f'start "" /wait {str(pkg_path)} /start-minion=0 /S'
+                with salt.utils.files.fopen(batch_file, "w") as fp:
+                    fp.write(batch_content)
+                # Now run the batch file
+                ret = self.proc.run("cmd.exe", "/c", str(batch_file))
                 self._check_retcode(ret)
 
             log.debug("Removing installed salt-minion service")
@@ -1169,8 +1157,8 @@ def _terminate(self):
 
         # Dereference the internal _process attribute
         self._process = None
-        # Lets log and kill any child processes left behind, including the main subprocess
-        # if it failed to properly stop
+        # Let's log and kill any child processes left behind, including the main
+        # subprocess if it failed to properly stop
         terminate_process(
             pid=pid,
             kill_children=True,