Avoid prompting user in packages check

pkgs_envsetup.py

 #!/usr/bin/env python3
 
-from subprocess import call, DEVNULL
+from subprocess import run, DEVNULL, PIPE
 
 PACKAGES = [
     "python3-defusedxml",
@@ -13,14 +13,19 @@ PACKAGES = [
 
 def main():
     for pkg in PACKAGES:
-        if call(
-            ["/usr/bin/dpkg", "-s", pkg], shell=False, stdout=DEVNULL, stderr=DEVNULL
-        ):
-            result = call(
-                ["/usr/bin/apt", "install", pkg],
+        if run(
+            ["/usr/bin/dpkg", "-s", pkg],
+            shell=False,
+            stdout=DEVNULL,
+            stderr=DEVNULL,
+            stdin=PIPE,
+        ).returncode != 0:
+            result = run(
+                ["/usr/bin/apt", "install", "-y", pkg],
                 shell=False,
                 stdout=DEVNULL,
                 stderr=DEVNULL,
+                stdin=PIPE,
             )
             if not result:
                 print("{} install succeeded".format(pkg))