diff --git a/env_var.sh b/env_var.sh
index b13134c..c899ad9 100755
--- a/env_var.sh
+++ b/env_var.sh
@@ -33,3 +33,7 @@ EL_GITHUB_TOKEN=""
 EL_MANIFEST_PROD="./default.xml"
 EL_MANIFEST_DEV="./manifest/git_manifest_erplibre.xml"
 EL_LANG="fr"
+# Verbosité de l'installation (poetry install, repo sync, git daemon).
+# 0 = silencieux (défaut), 1 = logs détaillés. On respecte une valeur déjà
+# passée en environnement : EL_VERBOSE=1 make install_odoo_18
+EL_VERBOSE="${EL_VERBOSE:-0}"
diff --git a/manifest/git_manifest_odoo12.0.xml b/manifest/git_manifest_odoo12.0.xml
index 08c03df..340c2cc 100644
--- a/manifest/git_manifest_odoo12.0.xml
+++ b/manifest/git_manifest_odoo12.0.xml
@@ -753,7 +753,7 @@
         name="queue.git"
         path="odoo12.0/addons/OCA_queue"
         remote="ERPLibre_origin_OCA"
-        revision="12.0"
+        revision="erplibre/12.0"
         groups="addons,odoo12.0"
     />
     <project
diff --git a/script/install/install_locally.sh b/script/install/install_locally.sh
index 8148e50..331701c 100755
--- a/script/install/install_locally.sh
+++ b/script/install/install_locally.sh
@@ -22,6 +22,14 @@ VENV_ODOO_PATH=".venv.${EL_ERPLIBRE_VERSION}"
 POETRY_ODOO_PATH=${VENV_ERPLIBRE_PATH}/bin/poetry
 export WITH_POETRY_INSTALLATION=1
 
+# Verbosité de l'installation Poetry : silencieuse (-q) par défaut, les logs
+# détaillés (-vvv) reviennent avec la variable d'environnement EL_VERBOSE=1.
+if [[ "${EL_VERBOSE:-0}" == "1" ]]; then
+    POETRY_VERBOSE="-vvv"
+else
+    POETRY_VERBOSE="-q"
+fi
+
 # EL_PHASE controls which steps to execute.  Used by install_locally_dev.sh
 # for parallel installation — do not set manually unless you know what you do.
 #   all    (default) – full install: setup + poetry phases
@@ -83,7 +91,7 @@ if [[ "${EL_PHASE}" != "setup" ]]; then
         # To fix keyring problem when installation is blocked, use
         export PYTHON_KEYRING_BACKEND=keyring.backends.null.Keyring
         if [[ ${WITH_POETRY_INSTALLATION} -ne 0 ]]; then
-            poetry install --no-root -vvv
+            poetry install --no-root ${POETRY_VERBOSE}
         fi
         retVal=$?
         if [[ $retVal -ne 0 ]]; then
diff --git a/script/manifest/update_manifest_dev.sh b/script/manifest/update_manifest_dev.sh
index f36cd22..4d7561d 100755
--- a/script/manifest/update_manifest_dev.sh
+++ b/script/manifest/update_manifest_dev.sh
@@ -2,6 +2,14 @@
 
 . ./env_var.sh
 
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
+
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
@@ -10,4 +18,4 @@
 
 # Update git-repo
 .venv.erplibre/bin/repo init -u https://github.com/ERPLibre/ERPLibre -b $(git rev-parse --verify HEAD) -m ${EL_MANIFEST_DEV}
-.venv.erplibre/bin/repo sync -v
+.venv.erplibre/bin/repo sync ${REPO_VERBOSE}
diff --git a/script/manifest/update_manifest_local_dev.sh b/script/manifest/update_manifest_local_dev.sh
index 8b8c5f2..abdc5c3 100755
--- a/script/manifest/update_manifest_local_dev.sh
+++ b/script/manifest/update_manifest_local_dev.sh
@@ -1,11 +1,19 @@
 #!/usr/bin/env bash
 
 . ./env_var.sh
+
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
 # Update git-repo
-git daemon --base-path=. --export-all --reuseaddr --informative-errors --verbose &
+git daemon --base-path=. --export-all --reuseaddr --informative-errors ${DAEMON_VERBOSE} &
 DAEMON_PID=$!
 
 if [ -L "$EL_MANIFEST_DEV" ]; then
@@ -24,6 +32,6 @@ fi
 .venv.erplibre/bin/python ./script/git/git_merge_repo_manifest.py --output .repo/local_manifests/erplibre_manifest.xml --with_OCA
 
 .venv.erplibre/bin/repo init -u git://127.0.0.1:9418/ -b $(git rev-parse --verify HEAD) -m ${MANIFEST_TARGET} "$@"
-.venv.erplibre/bin/repo sync -c -j "$JOBS" -v -m ${MANIFEST_TARGET}
+.venv.erplibre/bin/repo sync -c -j "$JOBS" ${REPO_VERBOSE} -m ${MANIFEST_TARGET}
 
 kill ${DAEMON_PID}
diff --git a/script/manifest/update_manifest_local_dev_code_generator.sh b/script/manifest/update_manifest_local_dev_code_generator.sh
index e9635fd..c57d54c 100755
--- a/script/manifest/update_manifest_local_dev_code_generator.sh
+++ b/script/manifest/update_manifest_local_dev_code_generator.sh
@@ -2,11 +2,19 @@
 
 . ./env_var.sh
 
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
+
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
 # Update git-repo
-git daemon --base-path=. --export-all --reuseaddr --informative-errors --verbose &
+git daemon --base-path=. --export-all --reuseaddr --informative-errors ${DAEMON_VERBOSE} &
 DAEMON_PID=$!
 
 if [ -L "$EL_MANIFEST_DEV" ]; then
@@ -25,6 +33,6 @@ fi
 .venv.erplibre/bin/python ./script/git/git_merge_repo_manifest.py --output .repo/local_manifests/erplibre_manifest.xml --with_OCA
 
 .venv.erplibre/bin/repo init -u git://127.0.0.1:9418/ -b $(git rev-parse --verify HEAD) -m ${MANIFEST_TARGET} -g base,code_generator
-.venv.erplibre/bin/repo sync -c -j "$JOBS" -v -m ${MANIFEST_TARGET}
+.venv.erplibre/bin/repo sync -c -j "$JOBS" ${REPO_VERBOSE} -m ${MANIFEST_TARGET}
 
 kill ${DAEMON_PID}
diff --git a/script/manifest/update_manifest_local_mobile.sh b/script/manifest/update_manifest_local_mobile.sh
index 32d588e..dfaa97a 100755
--- a/script/manifest/update_manifest_local_mobile.sh
+++ b/script/manifest/update_manifest_local_mobile.sh
@@ -1,11 +1,19 @@
 #!/usr/bin/env bash
 
 . ./env_var.sh
+
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
 # Update git-repo
-git daemon --base-path=. --export-all --reuseaddr --informative-errors --verbose &
+git daemon --base-path=. --export-all --reuseaddr --informative-errors ${DAEMON_VERBOSE} &
 DAEMON_PID=$!
 
 if [ -L "$EL_MANIFEST_DEV" ]; then
@@ -24,6 +32,6 @@ fi
 .venv.erplibre/bin/python ./script/git/git_merge_repo_manifest.py --output .repo/local_manifests/erplibre_manifest.xml --with_mobile
 
 .venv.erplibre/bin/repo init -u git://127.0.0.1:9418/ -b $(git rev-parse --verify HEAD) -m ${MANIFEST_TARGET} "$@"
-.venv.erplibre/bin/repo sync -c -j "$JOBS" -v -m ${MANIFEST_TARGET}
+.venv.erplibre/bin/repo sync -c -j "$JOBS" ${REPO_VERBOSE} -m ${MANIFEST_TARGET}
 
 kill ${DAEMON_PID}
diff --git a/script/manifest/update_manifest_local_prod.sh b/script/manifest/update_manifest_local_prod.sh
index 09c7d57..bee78d7 100755
--- a/script/manifest/update_manifest_local_prod.sh
+++ b/script/manifest/update_manifest_local_prod.sh
@@ -2,11 +2,19 @@
 
 . ./env_var.sh
 
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
+
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
 # Update git-repo
-git daemon --base-path=. --export-all --reuseaddr --informative-errors --verbose &
+git daemon --base-path=. --export-all --reuseaddr --informative-errors ${DAEMON_VERBOSE} &
 DAEMON_PID=$!
 
 if [ -L "$EL_MANIFEST_DEV" ]; then
@@ -25,6 +33,6 @@ fi
 .venv.erplibre/bin/python ./script/git/git_merge_repo_manifest.py --output .repo/local_manifests/erplibre_manifest.xml --with_OCA
 
 .venv.erplibre/bin/repo init -u git://127.0.0.1:9418/ -b $(git rev-parse --verify HEAD) -m ${MANIFEST_TARGET}
-.venv.erplibre/bin/repo sync -c -j "$JOBS" -v -m ${MANIFEST_TARGET}
+.venv.erplibre/bin/repo sync -c -j "$JOBS" ${REPO_VERBOSE} -m ${MANIFEST_TARGET}
 
 kill ${DAEMON_PID}
diff --git a/script/manifest/update_manifest_prod.sh b/script/manifest/update_manifest_prod.sh
index fa3beb0..d6b9b0a 100755
--- a/script/manifest/update_manifest_prod.sh
+++ b/script/manifest/update_manifest_prod.sh
@@ -2,6 +2,14 @@
 
 . ./env_var.sh
 
+# Verbosité de l'installation (git-repo). Silencieuse par défaut ;
+# EL_VERBOSE=1 rétablit les logs détaillés (repo sync, git daemon).
+if [ "${EL_VERBOSE:-0}" = "1" ]; then
+  REPO_VERBOSE="-v"; DAEMON_VERBOSE="--verbose"
+else
+  REPO_VERBOSE="-q"; DAEMON_VERBOSE=""
+fi
+
 #EL_MANIFEST_PROD="./default.xml"
 #EL_MANIFEST_DEV="./manifest/default.dev.xml"
 
@@ -16,4 +24,4 @@ fi
 
 # Update git-repo
 .venv.erplibre/bin/repo init -u https://github.com/ERPLibre/ERPLibre -b $(git rev-parse --verify HEAD)
-.venv.erplibre/bin/repo sync -v -j "$JOBS"
+.venv.erplibre/bin/repo sync ${REPO_VERBOSE} -j "$JOBS"
diff --git a/script/selenium/selenium_lib.py b/script/selenium/selenium_lib.py
index 09593dc..6847259 100644
--- a/script/selenium/selenium_lib.py
+++ b/script/selenium/selenium_lib.py
@@ -16,6 +16,7 @@ import time
 import tkinter as tk
 from pathlib import Path
 from tkinter import filedialog
+from typing import Optional
 
 from pykeepass import PyKeePass
 from randomwordfr import RandomWordFr
@@ -312,7 +313,12 @@ class SeleniumLib(object):
                         command_executor=driver_url,
                     )
                 else:
-                    firefox_options.add_argument("-remote-allow-system-access")
+                    # NE PAS passer « -remote-allow-system-access » : les
+                    # geckodriver récents le REFUSENT via les capabilities
+                    # (« Argument --remote-allow-system-access can't be set via
+                    # capabilities ») et gèrent seuls l'accès système du Firefox
+                    # snap. Le passer cassait TOUS les setups sur geckodriver
+                    # récent (pas seulement snap/Ubuntu).
                     self.driver = webdriver.Firefox(
                         options=firefox_options,
                         service=firefox_services,
diff --git a/script/version/update_env_version.py b/script/version/update_env_version.py
index 154913b..ca265b1 100755
--- a/script/version/update_env_version.py
+++ b/script/version/update_env_version.py
@@ -524,6 +524,28 @@ class Update:
         status = os.system("./script/install/install_locally_dev.sh")
         return status
 
+    def apply_extra_modules(self):
+        """Add the extra modules (CybroOdoo) to the repo manifest, EVEN when
+        the base environment is already installed. Records the extra state so
+        git_merge_repo_manifest includes manifest/git_manifest_extra_odooXX.xml,
+        then re-generates the local manifest and re-syncs the repos (the Odoo
+        config is regenerated by the post-install step that follows).
+
+        Without this, « --with_extra » on an already-installed env was a no-op:
+        update_environment() (where the extra state is set) is skipped when the
+        env is valid, so get_version_extra() stayed False and CybroOdoo was
+        never cloned nor added to config.conf. Returns the os.system status."""
+        _logger.info("Applying extra modules (CybroOdoo) to the manifest...")
+        if _STATE_AVAILABLE:
+            set_version_installed(
+                self.new_version_odoo,
+                extra=True,
+                python=self.new_version_python,
+                poetry=self.new_version_poetry,
+            )
+        self.execute_log.append("Extra modules (CybroOdoo)")
+        return os.system("./script/manifest/update_manifest_local_dev.sh")
+
     def install_system(self):
         self.execute_log.append(f"System installation")
         status = os.system("./script/install/install_dev.sh")
@@ -709,6 +731,11 @@ def main():
     update.validate_version()
 
     _logger.info("Validate environment")
+    # exit_code : propagé à sys.exit() -> une install qui ÉCHOUE renvoie un
+    # code non nul (avant, main() ne sortait jamais en erreur : le suivi
+    # d'installation affichait ✅ même quand poetry/pyenv plantaient).
+    # Rappel os.system : 0 = succès ; toute autre valeur = échec.
+    exit_code = 0
     status = 0
     if (
         update.config.install_dev
@@ -718,16 +745,31 @@ def main():
         status = update.validate_environment()
     if update.config.install:
         status = update.install_system()
+        if status not in (0, True, None):
+            exit_code = 1
     if (
         update.config.force_install
         or update.config.install_dev
         or update.config.partial_install
         or update.config.is_in_switch
     ) and not status:
-        update.update_environment()
+        rc = update.update_environment()
+        if rc not in (0, True, None):
+            exit_code = 1
     update.print_log()
 
-    if update.config.install_dev:
+    # --with_extra : appliquer les modules extra (CybroOdoo) MÊME si l'env de
+    # base est déjà installé (sinon update_environment est sauté -> « Nothing
+    # to do » et CybroOdoo n'est jamais ajouté au repo ni à config.conf).
+    # Placé AVANT la régénération de config (post-étape) pour qu'elle le prenne.
+    if update.config.with_extra and exit_code == 0:
+        rc = update.apply_extra_modules()
+        if rc not in (0, True, None):
+            exit_code = 1
+
+    # Étapes post-install : uniquement si l'installation a RÉUSSI (sinon
+    # .venv.erplibre est absent -> cascade d'erreurs inutiles).
+    if update.config.install_dev and exit_code == 0:
         # Update pycharm configuration
         update.pycharm_update()
 
@@ -736,6 +778,8 @@ def main():
             "./.venv.erplibre/bin/python ./script/git/git_repo_update_group.py"
         )
         os.system("./script/generate_config.sh")
+
+    return exit_code
         # TODO ignore this if installation fail
 
         # TODO this cause an error at first execution, need to source ./.venv.erplibre/bin/activate and rerun
@@ -756,4 +800,4 @@ def die(cond, message, code=1):
 
 
 if __name__ == "__main__":
-    main()
+    sys.exit(main() or 0)