fix backports and system modules

- Refactored `is_backports_enabled()` to dynamically detect backports using `DEBIAN_CODENAME` instead of hardcoded strings, improving script portability.
- Added support for standalone classic backports files (`/etc/apt/sources.list.d/debian-backports.list`) and deb822 format (`*.sources`) to ensure consistent detection across different repository configurations.
- Resolved Mesa and Kernel backports detection bugs, ensuring correct dialogue prompts and preventing false error messages during installation.
- Implemented smart rounding for zram memory allocation to the nearest Gigabyte for optimized performance.
- Enhanced Whiptail manual input validation for zram to block empty, non-numeric, or zero values.
- Introduced a dedicated `software_centers.sh` module for the modular and clean installation of GNOME Software and Plasma Discover.
- Added smart desktop environment detection (GTK/QT) to automatically suggest and install the optimal software center.
- Implemented a two-phase installation flow for software centers (Base Store -> Optional Flatpak support) with static consistency warnings based on the detected desktop environment.
- update README.md

README.md

@@ -49,16 +49,16 @@ After running the script:
 |--------|-------------|--------------|
 | **1** | System Info | Show detected OS, CPU, RAM, GPU and hardware details |
 | **2** | [User Privileges & Feedback](#user-privileges--feedback) | Configure sudo group membership, enable passwordless sudo for frequent tasks, repair home directory ownership issues, and toggle visual password feedback (asterisks) in terminal |
-| **3** | Configure Repositories | Setup official repos with/without backports (deb822 or classic format)|
+| **3** | Configure Repositories | Setup official repos with/without backports (deb822 or classic format) and non-free/contrib|
 | **4** | Setup Wireless & Firmware | Install WiFi firmware for Broadcom, Intel, and other chipsets|
 | **5** | Configure Graphics Stack | AMD/Intel/NVIDIA drivers + monitoring tools |
-| **6** | Update Kernel to Backports | Install latest stable kernel from Debian backports|
+| **6** | Update Kernel to Backports | Install latest kernel from Debian backports|
 | **7** | Gaming Setup and Performance | Steam, Heroic Games Launcher, GameMode, MangoHud, Java JRE (Temurin 8/17/21) |
 | **8** | Install ZRAM (compressed swap) | Configure compressed RAM for memory optimization|
-| **9** | Install Programs and Software | Selection across 10 categories (Dev, Themes, System, etc.) |
+| **9** | Install Programs and Software | Selection from several categories (Development, Themes, System, etc.) |
 | **10** | Exit | Return to terminal |
 
-### Extra Applications Categories (Option 9)
+### Install Programs and Software (Option 9)
 
 The submenu offers the next categories:
 
@@ -73,9 +73,10 @@ The submenu offers the next categories:
 | **6** | Code Editors & IDEs | vim, vim-gtk3, Neovim, Helix, nano, Emacs, Kate, Mousepad, Gedit, Geany, GNOME Text Editor, and VSCodium (VS Code open-source) |
 | **7** | Servers & Dev Tools | Web servers (Nginx/Apache), databases (PostgreSQL/MariaDB), Java Development Kit (Temurin 17/21/25 JDK), Docker, Python, SSH tools, fail2ban, and essential utilities |
 | **8** | Security & Networking | Wireshark, tcpdump, Zenmap, ClamAV, UFW, Fail2ban |
-| **9** | System Tools | htop/btop, ncdu, Timeshift, tmux/screen, Flatpak support, extension repository manager, and qemu/virtmanager |
+| **9** | Software Centers | Choose a software store to install |
-| **10** | Fetch / System Info | fastfetch/neofetch, hyfetch, Linux logo and screenfetch |
+| **10** | System Tools | htop/btop, ncdu, Timeshift, tmux/screen, Flatpak support, extension repository manager, and qemu/virtmanager |
-| **11** | Back to Main Menu | Return directly to the main Debianito menu (exit submenu) |
+| **11** | Fetch / System Info | fastfetch/neofetch, hyfetch, Linux logo and screenfetch |
+| **12** | Back to Main Menu | Return directly to the main Debianito menu (exit submenu) |
 
 ---
 
@@ -135,6 +136,7 @@ By default, Debian’s terminal hides your password (no asterisks or feedback).
 │   │   ├── security
 │   │   │   └── security.sh
 │   │   ├── system
+│   │   │   ├── software_centers.sh
 │   │   │   └── system.sh
 │   │   └── themes
 │   │       ├── cursors
@@ -160,11 +162,14 @@ By default, Debian’s terminal hides your password (no asterisks or feedback).
 │   │   └── nvidia.sh
 │   ├── gpu.sh
 │   ├── kernel.sh
+│   ├── repos
+│   │   └── repo_detect.sh
 │   ├── repos.sh
 │   ├── sudo_config.sh
 │   ├── utils.sh
 │   └── zram.sh
 └── README.md
+
 ```
 
 ---

modules/bullseye/extras.sh

@@ -534,9 +534,10 @@ install_extras_bullseye() {
             "6"  "Code Editors & IDEs" \
             "7"  "Servers & Dev Tools" \
             "8"  "Security & Networking" \
-            "9"  "System Tools" \
+            "9"  "Software Centers" \
-            "10" "Fetch / System Info" \
+            "10" "System Tools" \
-            "11" "Back to main menu" \
+            "11" "Fetch / System Info" \
+            "12" "Back to main menu" \
             3>&1 1>&2 2>&3)
 
         [ -z "$cat_choice" ] && return
@@ -552,10 +553,41 @@ install_extras_bullseye() {
             6)  _cat_programming_bullseye ;;
             7)  _cat_dev_bullseye ;;
             8)  _cat_security_bullseye ;;
-            9)  _cat_general_bullseye ;;
+            9)  _cat_software_centers_bullseye ;;
-            10) _cat_fetch_bullseye ;;
+            10) _cat_general_bullseye ;;
-            11) return ;;
+            11) _cat_fetch_bullseye ;;
+            12) return ;;
         esac
         clear
     done
 }
+
+_cat_software_centers_bullseye() {
+    local sc_choice
+    sc_choice=$(whiptail --title "Software Centers" --menu \
+        "Choose a software store to install:" 12 65 2 \
+        "gnome-software"   "Software Center for GNOME" \
+        "plasma-discover"  "Software manager for Plasma" \
+        3>&1 1>&2 2>&3)
+    [ -z "$sc_choice" ] && return
+
+    _run_cmd "Install" "sudo apt install -y $sc_choice" "Installing ${sc_choice}..."
+
+    if _confirm "Flatpak Support" "Do you want to enable Flatpak support for this software center?"; then
+        local bpkg
+        if [ "$sc_choice" = "gnome-software" ]; then
+            bpkg="gnome-software-plugin-flatpak"
+        else
+            bpkg="plasma-discover-backend-flatpak"
+        fi
+        if ! is_installed "flatpak"; then
+            _run_cmd "Flatpak" "sudo apt install -y flatpak" "Installing Flatpak..."
+        fi
+        _run_cmd "Plugin" "sudo apt install -y $bpkg" "Installing $bpkg..."
+        flatpak remote-add --if-not-exists flathub \
+            https://dl.flathub.org/repo/flathub.flatpakrepo
+        echo "Flathub repository added."
+    fi
+
+    echo -e "${GREEN}Software store installed.${NC}"
+}

modules/extras.sh

@@ -38,9 +38,10 @@ install_extras() {
             "6" "Code Editors & IDEs" \
             "7" "Servers & Dev Tools" \
             "8" "Security & Networking" \
-            "9" "System Tools" \
+            "9" "Software Centers" \
-            "10" "Fetch / System Info" \
+            "10" "System Tools" \
-            "11" "Back to main menu" \
+            "11" "Fetch / System Info" \
+            "12" "Back to main menu" \
             3>&1 1>&2 2>&3)
 
         [ -z "$cat_choice" ] && return
@@ -56,9 +57,10 @@ install_extras() {
             6)  _cat_programming ;;
             7)  _cat_dev ;;
             8)  _cat_security ;;
-            9)  _cat_general ;;
+            9)  _cat_software_centers ;;
-            10) _cat_fetch ;;
+            10) _cat_general ;;
-            11) return ;;
+            11) _cat_fetch ;;
+            12) return ;;
         esac
         clear
     done

modules/extras/system/software_centers.sh

@@ -0,0 +1,40 @@
+# software_centers.sh — Standalone Software Center installer
+
+_cat_software_centers() {
+    local de_type
+    de_type=$(_detect_desktop_type)
+    local sc_choice
+    sc_choice=$(whiptail --title "Software Centers" --menu \
+        "Choose a software store to install:" 12 65 2 \
+        "gnome-software"   "Software Center for GNOME" \
+        "plasma-discover"  "Software manager for Plasma" \
+        3>&1 1>&2 2>&3)
+    [ -z "$sc_choice" ] && return
+
+    if { [ "$de_type" = "qt" ] && [ "$sc_choice" = "gnome-software" ]; } || \
+       { [ "$de_type" = "gtk" ] && [ "$sc_choice" = "plasma-discover" ]; }; then
+        _msg "Warning" "Warning: This store requires extra background libraries \
+and may look visually inconsistent with your current desktop environment."
+        ! _confirm "Continue?" "Install anyway?" && return
+    fi
+
+    _run_cmd "Install" "sudo apt install -y $sc_choice" "Installing ${sc_choice}..."
+
+    if _confirm "Flatpak Support" "Do you want to enable Flatpak support for this software center?"; then
+        local bpkg
+        if [ "$sc_choice" = "gnome-software" ]; then
+            bpkg="gnome-software-plugin-flatpak"
+        else
+            bpkg="plasma-discover-backend-flatpak"
+        fi
+        if ! is_installed "flatpak"; then
+            _run_cmd "Flatpak" "sudo apt install -y flatpak" "Installing Flatpak..."
+        fi
+        _run_cmd "Plugin" "sudo apt install -y $bpkg" "Installing $bpkg..."
+        flatpak remote-add --if-not-exists flathub \
+            https://dl.flathub.org/repo/flathub.flatpakrepo
+        echo "Flathub repository added."
+    fi
+
+    echo -e "${GREEN}Software store installed.${NC}"
+}

modules/extras/system/system.sh

@@ -1,6 +1,21 @@
 #!/usr/bin/env bash
 # system.sh — System Tools (extrepo moved here from Dev & Servers)
 
+_detect_desktop_type() {
+    local desktop
+    desktop="${XDG_CURRENT_DESKTOP:-${DESKTOP_SESSION:-}}"
+    desktop="${desktop,,}"
+
+    case "$desktop" in
+        *kde*|*lxqt*|*razor*|*plasma*)
+            echo "qt"; return ;;
+        *gnome*|*xfce*|*cinnamon*|*mate*|*lxde*|*budgie*|*sway*|*hyprland*|*i3*|*bspwm*|*openbox*|*fluxbox*)
+            echo "gtk"; return ;;
+    esac
+
+    echo "gtk"
+}
+
 _cat_general() {
     local headless=false
     _is_headless && headless=true
@@ -113,19 +128,38 @@ _cat_general() {
             flatpak)
                 if ! is_installed "flatpak"; then
                     _run_cmd "Flatpak" "sudo apt install -y flatpak" "Installing Flatpak..."
-                    if command -v plasma-discover &>/dev/null; then
-                        _run_cmd "Flatpak" "sudo apt install -y plasma-discover-backend-flatpak" "Installing Flatpak backend..."
-                        echo "Flatpak backend for Discover installed."
-                    elif command -v gnome-software &>/dev/null; then
-                        _run_cmd "Flatpak" "sudo apt install -y gnome-software-plugin-flatpak" "Installing Flatpak plugin..."
-                        echo "Flatpak plugin for GNOME Software installed."
-                    fi
                 else
                     echo "Flatpak already installed."
                 fi
                 flatpak remote-add --if-not-exists flathub \
                     https://dl.flathub.org/repo/flathub.flatpakrepo
                 echo "Flathub repository added."
+
+                if command -v plasma-discover &>/dev/null; then
+                    if ! is_installed "plasma-discover-backend-flatpak" 2>/dev/null; then
+                        if _confirm "Discover Backend" "Install Flatpak backend for Plasma Discover?"; then
+                            _run_cmd "Backend" "sudo apt install -y plasma-discover-backend-flatpak" "Installing Flatpak backend..."
+                        fi
+                    fi
+                elif command -v gnome-software &>/dev/null; then
+                    if ! is_installed "gnome-software-plugin-flatpak" 2>/dev/null; then
+                        if _confirm "GNOME Plugin" "Install Flatpak plugin for GNOME Software?"; then
+                            _run_cmd "Plugin" "sudo apt install -y gnome-software-plugin-flatpak" "Installing Flatpak plugin..."
+                        fi
+                    fi
+                else
+                    local de_type
+                    de_type=$(_detect_desktop_type)
+                    if [ "$de_type" = "qt" ]; then
+                        if _confirm "Software Center" "Install Plasma Discover for Flatpak management?"; then
+                            _run_cmd "Discover" "sudo apt install -y plasma-discover plasma-discover-backend-flatpak" "Installing Discover..."
+                        fi
+                    else
+                        if _confirm "Software Center" "Install GNOME Software for Flatpak management?"; then
+                            _run_cmd "GNOME Software" "sudo apt install -y gnome-software gnome-software-plugin-flatpak" "Installing GNOME Software..."
+                        fi
+                    fi
+                fi
                 echo -e "${GREEN}A reboot is recommended.${NC}"
                 ;;
             fwupd)
@@ -191,3 +225,4 @@ _cat_general() {
 
     echo -e "${GREEN}System tools installed.${NC}"
 }
+

modules/utils.sh

@@ -265,24 +265,26 @@ get_intel_generation() {
 # Check if backports repository is enabled (active line without #)
 # ----------------------------------------------------------------------
 is_backports_enabled() {
-    # Check classic sources.list
+    local codename="${DEBIAN_CODENAME:-}"
-    if [ -f /etc/apt/sources.list ]; then
+    [ -z "$codename" ] && { echo false; return; }
-        if grep -Eq '^[^#]*[ \t]+bookworm-backports[ \t]+' /etc/apt/sources.list 2>/dev/null; then
+
-            echo true
+    local c_pattern="^[^#]*${codename}-backports[[:space:]]+"
-            return
+    local d_pattern="Suites:.*${codename}-backports"
-        fi
+
-        if grep -Eq '^[^#]*[ \t]+trixie-backports[ \t]+' /etc/apt/sources.list 2>/dev/null; then
+    # Classic embedded (sources.list)
-            echo true
+    if [ -f /etc/apt/sources.list ] && grep -Eq "$c_pattern" /etc/apt/sources.list 2>/dev/null; then
-            return
+        echo true; return
-        fi
     fi
 
-    # Check deb822 .sources files
+    # Classic standalone (new — debian-backports.list)
-    if [ -d /etc/apt/sources.list.d ]; then
+    if [ -f /etc/apt/sources.list.d/debian-backports.list ] && \
-        if grep -qr 'Suites:.*-backports' /etc/apt/sources.list.d/*.sources 2>/dev/null; then
+       grep -Eq "$c_pattern" /etc/apt/sources.list.d/debian-backports.list 2>/dev/null; then
-            echo true
+        echo true; return
-            return
     fi
+
+    # Deb822 any .sources file
+    if grep -qr "$d_pattern" /etc/apt/sources.list.d/*.sources 2>/dev/null; then
+        echo true; return
     fi
 
     echo false

modules/zram.sh

@@ -9,7 +9,7 @@ install_zram() {
         return 1
     fi
 
-    local half_ram_mb=$((RAM_KB / 2 / 1024))
+    local half_ram_mb=$(( ((RAM_KB / 1024 / 1024 + 1) / 2) * 1024 ))
 
     local algo
     algo=$(whiptail --title "ZRAM Compression" --menu \
@@ -31,12 +31,12 @@ Choose compression algorithm:" \
     fi
 
     local zram_size
-    if _confirm "ZRAM Size" "Use 50% of RAM for ZRAM? (${half_ram_mb} MB out of ${RAM_SUMMARY})"; then
+    if _confirm "ZRAM Size" "Use recommended size for ZRAM? (${half_ram_mb} MB out of ${RAM_SUMMARY})"; then
         zram_size=$half_ram_mb
     else
         zram_size=$(whiptail --title "ZRAM Size" --inputbox \
             "Enter ZRAM size in MB:" 8 60 "$half_ram_mb" 3>&1 1>&2 2>&3)
-        if [ -z "$zram_size" ] || ! [[ "$zram_size" =~ ^[0-9]+$ ]]; then
+        if [ -z "$zram_size" ] || ! [[ "$zram_size" =~ ^[0-9]+$ ]] || [ "$zram_size" -eq 0 ]; then
             echo "ZRAM configuration cancelled."
             return 0
         fi