diff --git a/configs/baseline/airootfs/etc/calamares/branding/fws/desktop.qml b/configs/baseline/airootfs/etc/calamares/branding/fws/desktop.qml
new file mode 100644
index 0000000..e1e59d9
--- /dev/null
+++ b/configs/baseline/airootfs/etc/calamares/branding/fws/desktop.qml
@@ -0,0 +1,44 @@
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+import calamares 1.0
+
+Page {
+    id: page
+    title: qsTr("Choix de l'environnement")
+
+    Column {
+        anchors.fill: parent
+        anchors.margins: 20
+        spacing: 12
+
+        Text {
+            text: qsTr("Choisissez l'environnement de bureau à installer :")
+            font.pixelSize: 20
+            color: "#00d4ff"
+        }
+
+        RadioButton { id: rb_xfce; text: "Xfce"; checked: true; onCheckedChanged: if (checked) saveChoice() }
+        RadioButton { id: rb_kde; text: "KDE"; onCheckedChanged: if (checked) saveChoice() }
+        RadioButton { id: rb_gnome; text: "GNOME"; onCheckedChanged: if (checked) saveChoice() }
+        RadioButton { id: rb_hypr; text: "Hyprland"; onCheckedChanged: if (checked) saveChoice() }
+
+        Button {
+            text: qsTr("Enregistrer le choix")
+            onClicked: saveChoice()
+        }
+
+        function saveChoice() {
+            var choice = rb_xfce.checked ? "xfce" : (rb_kde.checked ? "kde" : (rb_gnome.checked ? "gnome" : "hyprland"))
+            try {
+                calamares.globalStorage.insert("FWS_DESKTOP", choice)
+            } catch (e) {
+                // ignore if unavailable
+            }
+            try {
+                calamares.utils.runCommand("/bin/sh", ["-c", "printf '%s' \"" + choice + "\" > /run/fws-desktop"], true)
+            } catch (e) {
+                // best effort
+            }
+        }
+    }
+}
diff --git a/configs/baseline/airootfs/etc/calamares/modules/desktop.conf b/configs/baseline/airootfs/etc/calamares/modules/desktop.conf
new file mode 100644
index 0000000..e731b60
--- /dev/null
+++ b/configs/baseline/airootfs/etc/calamares/modules/desktop.conf
@@ -0,0 +1,8 @@
+---
+# Minimal Calamares view module config for desktop selection
+# This tells Calamares to use our QML page from the branding folder.
+module: view
+name: desktop
+qml: "branding/fws/desktop.qml"
+title: "Choix de l'environnement"
+description: "Sélectionne le bureau à installer"
diff --git a/configs/baseline/airootfs/etc/calamares/modules/services-systemd.conf b/configs/baseline/airootfs/etc/calamares/modules/services-systemd.conf
index d12bc78..491c59c 100644
--- a/configs/baseline/airootfs/etc/calamares/modules/services-systemd.conf
+++ b/configs/baseline/airootfs/etc/calamares/modules/services-systemd.conf
@@ -12,10 +12,6 @@ units:
     action: "enable"
     mandatory: false
 
-  - name: "lightdm.service"
-    action: "enable"
-    mandatory: true
-
   - name: "sshd.service"
     action: "enable"
     mandatory: false
diff --git a/configs/baseline/airootfs/etc/calamares/modules/shellprocess.conf b/configs/baseline/airootfs/etc/calamares/modules/shellprocess.conf
index 42c9fc9..2064ce4 100644
--- a/configs/baseline/airootfs/etc/calamares/modules/shellprocess.conf
+++ b/configs/baseline/airootfs/etc/calamares/modules/shellprocess.conf
@@ -8,14 +8,13 @@ dontChroot: true
 script:
   # Copie le kernel depuis l'ISO vers /boot du système cible
   - 'cp "$(find /run/archiso/bootmnt -name vmlinuz-linux 2>/dev/null | head -1)" "${ROOT}/boot/vmlinuz-linux"'
-
-  # Configure LightDM pour démarrer automatiquement la session XFCE du premier utilisateur créé.
-  - 'FIRST_USER="$(awk -F: ''$$3 >= 1000 && $$1 != "nobody" { print $$1; exit }'' "${ROOT}/etc/passwd")"'
-  - 'if [ -n "$$FIRST_USER" ]; then mkdir -p "${ROOT}/etc/lightdm/lightdm.conf.d"; printf ''[Seat:*]\nautologin-user=%s\nautologin-user-timeout=0\nuser-session=xfce\nautologin-session=xfce\ngreeter-hide-users=true\nallow-guest=false\n'' "$$FIRST_USER" > "${ROOT}/etc/lightdm/lightdm.conf.d/50-fws.conf"; fi'
-  - 'if [ -n "$$FIRST_USER" ] && [ -d "${ROOT}/home/$$FIRST_USER" ]; then printf ''[Desktop]\nSession=xfce\n'' > "${ROOT}/home/$$FIRST_USER/.dmrc"; fi'
+  - 'DESKTOP="$(cat /run/fws-desktop 2>/dev/null || printf xfce)"'
+  - 'if [ -z "$DESKTOP" ]; then DESKTOP="xfce"; fi'
+  - 'if [ ! -f "${ROOT}/usr/local/bin/fws-desktop-init-$DESKTOP" ]; then echo "Script bureau introuvable: $DESKTOP" >&2; exit 1; fi'
+  - 'chroot "${ROOT}" /bin/bash "/usr/local/bin/fws-desktop-init-$DESKTOP"'
 
   # Supprime le drop-in archiso (surcharge HOOKS avec des hooks inexistants post-install)
-  - '-rm -f "${ROOT}/etc/mkinitcpio.conf.d/archiso.conf"'
+  - 'rm -f "${ROOT}/etc/mkinitcpio.conf.d/archiso.conf"'
 
   # Remplace le linux.preset archiso par le preset standard (default + fallback)
   # \x27 = ' et \x22 = " pour éviter les conflits de quotes dans YAML/bash
diff --git a/configs/baseline/airootfs/etc/calamares/settings.conf b/configs/baseline/airootfs/etc/calamares/settings.conf
index 5cbeae7..6775d1b 100644
--- a/configs/baseline/airootfs/etc/calamares/settings.conf
+++ b/configs/baseline/airootfs/etc/calamares/settings.conf
@@ -12,6 +12,7 @@ sequence:
       - keyboard
       - partition
       - users
+      - desktop
       - summary
   - exec:
       - partition
diff --git a/configs/baseline/packages.x86_64 b/configs/baseline/packages.x86_64
index f94ce57..4c85b8f 100644
--- a/configs/baseline/packages.x86_64
+++ b/configs/baseline/packages.x86_64
@@ -61,6 +61,7 @@ wget
 zsh
 grml-zsh-config
 bash
+zenity
 nano
 vim
 less
diff --git a/configs/releng/airootfs/usr/bin/fws-installer b/configs/releng/airootfs/usr/bin/fws-installer
index 42e6001..f16c161 100644
--- a/configs/releng/airootfs/usr/bin/fws-installer
+++ b/configs/releng/airootfs/usr/bin/fws-installer
@@ -4,8 +4,10 @@
 #  Script de lancement de Calamares
 # ============================================================
 
+set -euo pipefail
+
 # Vérifie que Calamares est installé
-if ! command -v calamares &>/dev/null; then
+if ! command -v calamares >/dev/null 2>&1; then
     echo "ERREUR : calamares n'est pas installé."
     exit 1
 fi
@@ -15,17 +17,91 @@ if [ ! -d /run/archiso ]; then
     echo "ATTENTION : Ce script doit être lancé depuis le live FWS."
 fi
 
+choose_desktop() {
+    local selection
+
+    if command -v zenity >/dev/null 2>&1; then
+        selection=$(zenity --list \
+            --title="Choix de l'environnement" \
+            --width=520 \
+            --height=320 \
+            --radiolist \
+            --print-column=2 \
+            --column="Choisir" --column="Environnement" --column="Description" \
+            TRUE "xfce" "Léger et classique" \
+            FALSE "kde" "KDE Plasma" \
+            FALSE "gnome" "GNOME" \
+            FALSE "hyprland" "Wayland / Hyprland" \
+            --text="Sélectionne l'environnement desktop à installer") || exit 1
+
+        printf '%s' "$selection"
+        return 0
+    fi
+
+    printf 'xfce'
+}
+
+DESKTOP="${FWS_DESKTOP:-xfce}"
+DESKTOP_EXPLICIT=0
+CALAMARES_ARGS=()
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        -d|--desktop)
+            shift
+            DESKTOP="${1:-xfce}"
+            DESKTOP_EXPLICIT=1
+            ;;
+        --desktop=*)
+            DESKTOP="${1#*=}"
+            DESKTOP_EXPLICIT=1
+            ;;
+        *)
+            CALAMARES_ARGS+=("$1")
+            ;;
+    esac
+    shift || true
+done
+
+if [ "$DESKTOP_EXPLICIT" -eq 0 ] && [ -z "${FWS_DESKTOP:-}" ]; then
+    DESKTOP="$(choose_desktop)"
+fi
+
+case "$DESKTOP" in
+    xfce|kde|gnome|hyprland)
+        export FWS_DESKTOP="$DESKTOP"
+        ;;
+    *)
+        echo "Environnement invalide: $DESKTOP"
+        exit 1
+        ;;
+esac
+
 # Lance Calamares avec les droits root
 # -D6 active les logs de debug (retirer en production)
 if [ "$EUID" -ne 0 ]; then
     if command -v sudo >/dev/null 2>&1; then
-        exec sudo -E calamares "$@"
+        # Persist the chosen desktop for Calamares (read by shellprocess before chroot)
+        if [ -n "${FWS_DESKTOP:-}" ]; then
+            mkdir -p /run
+            printf '%s' "$FWS_DESKTOP" > /run/fws-desktop
+        fi
+        exec sudo -E calamares "${CALAMARES_ARGS[@]}"
     elif command -v pkexec >/dev/null 2>&1; then
-        exec pkexec calamares "$@"
+        if [ -n "${FWS_DESKTOP:-}" ]; then
+            mkdir -p /run
+            printf '%s' "$FWS_DESKTOP" > /run/fws-desktop
+        fi
+        exec pkexec calamares "${CALAMARES_ARGS[@]}"
     else
         echo "ERREUR : Impossible de lancer Calamares en tant que root (sudo/pkexec non trouvés)."
         exit 1
     fi
 else
-    exec calamares "$@"
+        if [ -n "${FWS_DESKTOP:-}" ]; then
+            mkdir -p /run
+            printf '%s' "$FWS_DESKTOP" > /run/fws-desktop
+        fi
+        exec calamares "${CALAMARES_ARGS[@]}"
 fi
+
diff --git a/configs/releng/airootfs/usr/local/bin/fws-desktop-init-common b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-common
new file mode 100644
index 0000000..c52910b
--- /dev/null
+++ b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-common
@@ -0,0 +1,56 @@
+#!/bin/bash
+set -euo pipefail
+
+fws_first_user() {
+    awk -F: '$3 >= 1000 && $1 != "nobody" { print $1; exit }' /etc/passwd
+}
+
+fws_install_packages() {
+    pacman -Sy --noconfirm --needed "$@"
+}
+
+fws_enable_services() {
+    for service in "$@"; do
+        systemctl enable "$service" >/dev/null 2>&1 || true
+    done
+}
+
+
+fws_disable_services() {
+    for service in "$@"; do
+        systemctl disable "$service" >/dev/null 2>&1 || true
+    done
+}
+
+fws_write_dmrc() {
+    local user_name="$1"
+    local session_name="$2"
+
+    if [ -n "$user_name" ] && [ -d "/home/$user_name" ]; then
+        printf '[Desktop]\nSession=%s\n' "$session_name" > "/home/$user_name/.dmrc"
+    fi
+}
+
+fws_write_lightdm_config() {
+    local user_name="$1"
+    local session_name="$2"
+
+    if [ -z "$user_name" ]; then
+        return 0
+    fi
+
+    mkdir -p /etc/lightdm/lightdm.conf.d
+    printf '[Seat:*]\nautologin-user=%s\nautologin-user-timeout=0\nuser-session=%s\nautologin-session=%s\ngreeter-hide-users=true\nallow-guest=false\n' "$user_name" "$session_name" "$session_name" > /etc/lightdm/lightdm.conf.d/50-fws.conf
+}
+
+fws_write_sddm_config() {
+    local user_name="$1"
+    local session_name="$2"
+
+    if [ -z "$user_name" ]; then
+        return 0
+    fi
+
+    mkdir -p /etc/sddm.conf.d
+    printf '[Autologin]\nUser=%s\nSession=%s.desktop\nRelogin=false\n' "$user_name" "$session_name" > /etc/sddm.conf.d/50-fws.conf
+}
\ No newline at end of file
diff --git a/configs/releng/airootfs/usr/local/bin/fws-desktop-init-gnome b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-gnome
new file mode 100644
index 0000000..4d3ed8b
--- /dev/null
+++ b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-gnome
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+. /usr/local/bin/fws-desktop-init-common
+
+first_user="$(fws_first_user)"
+
+fws_install_packages gnome sddm
+fws_disable_services lightdm.service gdm.service
+fws_enable_services sddm.service
+fws_write_sddm_config "$first_user" gnome
+fws_write_dmrc "$first_user" gnome
\ No newline at end of file
diff --git a/configs/releng/airootfs/usr/local/bin/fws-desktop-init-hyprland b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-hyprland
new file mode 100644
index 0000000..8370387
--- /dev/null
+++ b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-hyprland
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+. /usr/local/bin/fws-desktop-init-common
+
+first_user="$(fws_first_user)"
+
+fws_install_packages hyprland xdg-desktop-portal-hyprland xdg-desktop-portal-gtk waybar wofi kitty swaybg swayidle swaylock xorg-xwayland wl-clipboard grim slurp qt5-wayland qt6-wayland sddm
+fws_disable_services lightdm.service gdm.service
+fws_enable_services sddm.service
+fws_write_sddm_config "$first_user" hyprland
+fws_write_dmrc "$first_user" hyprland
\ No newline at end of file
diff --git a/configs/releng/airootfs/usr/local/bin/fws-desktop-init-kde b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-kde
new file mode 100644
index 0000000..1a0d32e
--- /dev/null
+++ b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-kde
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+. /usr/local/bin/fws-desktop-init-common
+
+first_user="$(fws_first_user)"
+
+fws_install_packages plasma-meta konsole dolphin sddm
+fws_disable_services lightdm.service gdm.service
+fws_enable_services sddm.service
+fws_write_sddm_config "$first_user" plasma
+fws_write_dmrc "$first_user" plasma
\ No newline at end of file
diff --git a/configs/releng/airootfs/usr/local/bin/fws-desktop-init-xfce b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-xfce
new file mode 100644
index 0000000..ba868ff
--- /dev/null
+++ b/configs/releng/airootfs/usr/local/bin/fws-desktop-init-xfce
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+. /usr/local/bin/fws-desktop-init-common
+
+first_user="$(fws_first_user)"
+
+fws_install_packages xfce4 xfce4-goodies lightdm lightdm-gtk-greeter
+fws_disable_services sddm.service gdm.service
+fws_enable_services lightdm.service
+fws_write_lightdm_config "$first_user" xfce
+fws_write_dmrc "$first_user" xfce
\ No newline at end of file