Use dpkg status check

.github/release-nest-v3

@@ -1 +1 @@
-5
+6

data/scripts/check-pkg.sh

@@ -0,0 +1,10 @@
+#! /usr/bin/bash
+export LANG=C
+
+package=$1
+if dpkg-query -W -f='${Status}' $package 2>/dev/null | grep -q "install ok installed"
+then
+    exit 0
+else
+    exit 1
+fi

data/scripts/codec.sh

@@ -19,7 +19,7 @@ INSTALLED="no"
 
 package_check() {
       # Check if codecs are already installed
-      dpkg -s pika-codecs-meta
+      /usr/lib/pika/pika-welcome/scripts/check-pkg.sh pika-codecs-meta
       if [ $? -eq 0 ]; then
           export INSTALLED="yes"
       fi

debian/changelog

@@ -1,4 +1,4 @@
-pika-welcome (5.0.0-101pika3) pika; urgency=low
+pika-welcome (5.0.0-101pika4) pika; urgency=low
 
   * Port to PikaOS 4
 

src/welcome_content_page/recommended_addons_page/mod.rs

@@ -156,8 +156,7 @@ pub fn recommended_addons_page(
 
         gio::spawn_blocking(
             clone!(@strong checkpkg_status_loop_sender, @strong entry_checkpkg => move || loop {
-                let checkpkg_command = Command::new("dpkg")
-                    .arg("-s")
+                let checkpkg_command = Command::new("/usr/lib/pika/pika-welcome/scripts/check-pkg.sh")
                     .arg(&entry_checkpkg)
                     .output()
                     .expect("failed to execute process");