diff --git a/conf/extra_php-fpm.conf b/conf/extra_php-fpm.conf
deleted file mode 100644
index f796032..0000000
--- a/conf/extra_php-fpm.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-; Additional php.ini defines, specific to this pool of workers.
-
-php_admin_value[upload_max_filesize] = 100M
-php_admin_value[post_max_size] = 100M
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 6912550..a03f6ec 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -17,7 +17,7 @@ location __PATH__/ {
         # fastcgi_no_cache $no_cache;
 
         fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-        fastcgi_pass unix:/var/run/php/php__PHPVERSION__-fpm-__NAME__.sock;
+        fastcgi_pass unix:/var/run/php/php__PHP_VERSION__-fpm-__APP__.sock;
 
         fastcgi_index index.php;
         include fastcgi_params;
diff --git a/conf/systemd.service b/conf/systemd.service
index d59a132..278ec4d 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -7,7 +7,7 @@ Type=simple
 User=__APP__
 Group=__APP__
 WorkingDirectory=__INSTALL_DIR__/
-ExecStart=/usr/bin/php__PHPVERSION__ daemon.php start
+ExecStart=/usr/bin/php__PHP_VERSION__ daemon.php start
 StandardOutput=syslog
 SyslogIdentifier=__APP__
 PIDFile=/run/movim.pid
diff --git a/config_panel.toml.example b/config_panel.toml.example
deleted file mode 100644
index 00009c3..0000000
--- a/config_panel.toml.example
+++ /dev/null
@@ -1,30 +0,0 @@
-version = "1.0"
-
-[main]
-name = "Movim configuration"
-
-    [main.php_fpm_config]
-    name = "PHP-FPM configuration"
-
-        [main.php_fpm_config.fpm_footprint]
-        ask = "Memory footprint"
-        type = "select"
-        choices.low = "Low, <= 20Mb per pool"
-        choices.medium = "Medium, between 20Mb and 40Mb per pool"
-        choices.high = "High, > 40Mb per pool"
-        choices.specific = "Use specific value"
-        default = "low"
-
-        [main.php_fpm_config.fpm_free_footprint]
-        visible = "fpm_footprint == 'specific'"
-        ask = "Memory footprint of the service?"
-        type = "number"
-        default = "0"
-        help = "Free field to specify exactly the footprint in Mb if you don't want to use one of the three previous values."
-
-        [main.php_fpm_config.fpm_usage]
-        ask = "Expected usage"
-        type = "select"
-        choices = ["low", "medium", "high"]
-        default = "low"
-        help = "low: Personal usage, behind the SSO. No RAM footprint when not used, but the impact on the processor can be high if many users are using the service.<br>medium: Low usage, few people or/and publicly accessible. Low RAM footprint, medium processor footprint when used.<br>high: High usage, frequently visited website. High RAM footprint, but lower on processor usage and quickly responding."
diff --git a/manifest.toml b/manifest.toml
index 195c4ff..c6abfda 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -20,7 +20,8 @@ code = "https://github.com/movim/movim"
 cpe = "cpe:2.3:a:movim:movim"
 
 [integration]
-yunohost = ">= 11.2.20"
+yunohost = ">= 11.2.18"
+helpers_version = "2.1"
 architectures = "all"
 multi_instance = false
 
@@ -52,6 +53,7 @@ ram.runtime = "50M"
     [resources.system_user]
 
     [resources.install_dir]
+    group = "www-data:r-x"
 
     [resources.permissions]
     main.url = "/"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7078d8d..452176f 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,19 +1,7 @@
 #!/bin/bash
 
 #=================================================
-# COMMON VARIABLES
+# COMMON VARIABLES AND CUSTOM HELPERS
 #=================================================
 
-YNH_COMPOSER_VERSION="2.7.7"
-
-#=================================================
-# PERSONAL HELPERS
-#=================================================
-
-#=================================================
-# EXPERIMENTAL HELPERS
-#=================================================
-
-#=================================================
-# FUTURE OFFICIAL HELPERS
-#=================================================
+composer_version="2.7.7"
diff --git a/scripts/backup b/scripts/backup
index ecedc29..736cf60 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -8,36 +8,33 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# DECLARE DATA AND CONF FILES TO BACKUP
-#=================================================
-ynh_print_info --message="Declaring files to be backed up..."
+ynh_print_info "Declaring files to be backed up..."
 
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup --src_path="$install_dir"
+ynh_backup "$install_dir"
 
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
 
-ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
 
-ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_backup "/etc/php/$php_version/fpm/pool.d/$app.conf"
 
-ynh_backup --src_path="/etc/systemd/system/$app.service"
+ynh_backup "/etc/systemd/system/$app.service"
 
 #=================================================
 # BACKUP THE POSTGRESQL DATABASE
 #=================================================
-ynh_print_info --message="Backing up the PostgreSQL database..."
+ynh_print_info "Backing up the PostgreSQL database..."
 
-ynh_psql_dump_db --database="$db_name" > db.sql
+ynh_psql_dump_db > db.sql
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
+ynh_print_info "Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
diff --git a/scripts/change_url b/scripts/change_url
index 13ed4d9..147fcad 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -10,33 +10,33 @@ source /usr/share/yunohost/helpers
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping $app's systemd service..."
+ynh_script_progression "Stopping $app's systemd service..."
 
-ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"
+ynh_systemctl --service=$app --action="stop" --log_path="systemd"
 
 #=================================================
 # MODIFY URL IN NGINX CONF
 #=================================================
-ynh_script_progression --message="Updating NGINX web server configuration..."
+ynh_script_progression "Updating NGINX web server configuration..."
 
-ynh_change_url_nginx_config
+ynh_config_change_url_nginx
 
 #=================================================
 # SPECIFIC MODIFICATIONS
 #=================================================
-ynh_script_progression --message="Configuring $app's systemd service..."
+ynh_script_progression "Configuring $app's systemd service..."
 
-ynh_add_systemd_config
+ynh_config_add_systemd
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..." --weight=1
+ynh_script_progression "Starting $app's systemd service..."
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Movim daemon launched"
+ynh_systemctl --service="$app" --action="start" --log_path="systemd" --wait_until="Movim daemon launched"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Change of URL completed for $app"
+ynh_script_progression "Change of URL completed for $app"
diff --git a/scripts/config b/scripts/config
deleted file mode 100644
index 91c2de7..0000000
--- a/scripts/config
+++ /dev/null
@@ -1,95 +0,0 @@
-#!/bin/bash
-
-#=================================================
-# GENERIC STARTING
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
-source _common.sh
-source /usr/share/yunohost/helpers
-
-ynh_abort_if_errors
-
-#=================================================
-# RETRIEVE ARGUMENTS
-#=================================================
-
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-current_fpm_footprint=$(ynh_app_setting_get --app=$app --key=fpm_footprint)
-
-#=================================================
-# SPECIFIC GETTERS FOR TOML SHORT KEY
-#=================================================
-
-get__fpm_footprint() {
-    # Free footprint value for php-fpm
-    # Check if current_fpm_footprint is an integer
-    if [ "$current_fpm_footprint" -eq "$current_fpm_footprint" ] 2> /dev/null
-    then
-        echo "specific"
-    else
-        echo "$current_fpm_footprint"
-    fi
-}
-
-get__free_footprint() {
-    # Free footprint value for php-fpm
-    # Check if current_fpm_footprint is an integer
-    if [ "$current_fpm_footprint" -eq "$current_fpm_footprint" ] 2> /dev/null
-    then
-        # If current_fpm_footprint is an integer, that's a numeric value for the footprint
-        echo "$current_fpm_footprint"
-    else
-        echo "0"
-    fi
-}
-
-#=================================================
-# SPECIFIC SETTERS FOR TOML SHORT KEYS
-#=================================================
-
-set__fpm_footprint() {
-    if [ "$fpm_footprint" != "specific" ]
-    then
-        ynh_app_setting_set --app=$app --key=fpm_footprint --value="$fpm_footprint"
-    fi
-}
-
-set__fpm_free_footprint() {
-    if [ "$fpm_footprint" = "specific" ]
-    then
-        ynh_app_setting_set --app=$app --key=fpm_footprint --value="$fpm_free_footprint"
-    fi
-}
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-
-ynh_app_config_validate() {
-    _ynh_app_config_validate
-
-    if [ "${changed[fpm_usage]}" == "true" ] || [ "${changed[fpm_footprint]}" == "true" ] || [ "${changed[fpm_free_footprint]}" == "true" ]; then
-        # If fpm_footprint is set to 'specific', use $fpm_free_footprint value.
-        if [ "$fpm_footprint" = "specific" ]
-        then
-            fpm_footprint=$fpm_free_footprint
-        fi
-
-        if [ "$fpm_footprint" == "0" ]
-        then
-            ynh_print_err --message="When selecting 'specific', you have to set a footprint value into the field below."
-
-            exit 0
-        fi
-    fi
-}
-
-ynh_app_config_apply() {
-    _ynh_app_config_apply
-
-    ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint
-}
-
-ynh_app_config_run $1
diff --git a/scripts/install b/scripts/install
index dbd60d3..7050901 100644
--- a/scripts/install
+++ b/scripts/install
@@ -7,79 +7,80 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
+ynh_app_setting_set --key=php_upload_max_filesize --value=100M
+
 #=================================================
 # CONFIGURING A POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Configuring $app's PostgreSQL database..."
+ynh_script_progression "Configuring $app's PostgreSQL database..."
 
 # FIXME: is it actually required?
-ynh_psql_execute_as_root --database="$db_name" --sql="CREATE EXTENSION IF NOT EXISTS unaccent;"
-ynh_psql_execute_as_root --database="$db_name" --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;"
+ynh_psql_db_shell  <<< "CREATE EXTENSION IF NOT EXISTS unaccent;"
+ynh_psql_db_shell  <<< "CREATE EXTENSION IF NOT EXISTS pg_trgm;"
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..."
+ynh_script_progression "Setting up source files..."
 
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir="$install_dir"
 
 # Patch call to php in composer
-ynh_replace_string -f "$install_dir/composer.json" --match_string='"vendor/bin/phinx' --replace_string='"@php vendor/bin/phinx'
+ynh_replace -f "$install_dir/composer.json" --match='"vendor/bin/phinx' --replace='"@php vendor/bin/phinx'
 
 # Patch call to php in daemon code
-ynh_replace_string -f "$install_dir/src/Movim/Daemon/Session.php" --match_string="exec php" --replace_string="exec php$phpversion"
-
-chmod -R o-rwx "$install_dir"
-chown -R "$app:www-data" "$install_dir"
+ynh_replace -f "$install_dir/src/Movim/Daemon/Session.php" --match="exec php" --replace="exec php$php_version"
 
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding $app's configuration file..."
+ynh_script_progression "Adding $app's configuration file..."
 
-ynh_add_config --template="dot_env" --destination="$install_dir/.env"
+ynh_config_add --template="dot_env" --destination="$install_dir/.env"
 
-chmod 400 "$install_dir/.env"
-chown "$app:$app" "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown "$app:$app" "$install_dir/.env"
 
 #=================================================
 # BUILD MOVIM
 #=================================================
-ynh_script_progression --message="Building Movim..."
+ynh_script_progression "Building Movim..."
 
 # Install composer
-ynh_install_composer
-
-COMPOSER_ALLOW_SUPERUSER=1 ynh_exec_warn_less ynh_composer_exec --commands="movim:migrate"
-chmod -R o-rwx "$install_dir"
-chown -R "$app:www-data" "$install_dir"
+ynh_composer_install
+ynh_composer_exec install --no-dev
 
+COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec movim:migrate
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding system configurations related to $app..." --weight=1
+ynh_script_progression "Adding system configurations related to $app..."
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config
+ynh_config_add_phpfpm
 
 # Create a dedicated NGINX config
-ynh_add_nginx_config
+ynh_config_add_nginx
 
 # Create a dedicated systemd config
-ynh_add_systemd_config
+ynh_config_add_systemd
 yunohost service add "$app" --description="Responsive web-based XMPP client"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..."
+ynh_script_progression "Starting $app's systemd service..."
 
 # Start a systemd service
-ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Movim daemon launched"
+ynh_systemctl --service="$app" --action="start" --log_path="systemd" --wait_until="Movim daemon launched"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Installation of $app completed"
+ynh_script_progression "Installation of $app completed"
diff --git a/scripts/remove b/scripts/remove
index 0f607ed..e18e114 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -10,24 +10,24 @@ source /usr/share/yunohost/helpers
 #=================================================
 # REMOVE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Removing system configurations related to $app..." --weight=1
+ynh_script_progression "Removing system configurations related to $app..."
 
 # Remove the service from the list of services known by YunoHost (added from `yunohost service add`)
-if ynh_exec_warn_less yunohost service status "$app" >/dev/null; then
+if ynh_hide_warnings yunohost service status "$app" >/dev/null; then
     yunohost service remove "$app"
 fi
 
 # Remove the dedicated systemd config
-ynh_remove_systemd_config
+ynh_config_remove_systemd
 
 # Remove the dedicated NGINX config
-ynh_remove_nginx_config
+ynh_config_remove_nginx
 
 # Remove the dedicated PHP-FPM config
-ynh_remove_fpm_config
+ynh_config_remove_phpfpm
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Removal of $app completed"
+ynh_script_progression "Removal of $app completed"
diff --git a/scripts/restore b/scripts/restore
index bc38387..f59c9d9 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -11,49 +11,48 @@ source /usr/share/yunohost/helpers
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Restoring the app main directory..."
+ynh_script_progression "Restoring the app main directory..."
 
-ynh_restore_file --origin_path="$install_dir"
-
-chmod 750 "$install_dir"
-chmod -R o-rwx "$install_dir"
-chown -R "$app:www-data" "$install_dir"
+ynh_restore "$install_dir"
 
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 750 "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 #=================================================
 # RESTORE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the PostgreSQL database..."
+ynh_script_progression "Restoring the PostgreSQL database..."
 
-ynh_psql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
+ynh_psql_db_shell < ./db.sql
 
 #=================================================
 # RESTORE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Restoring system configurations related to $app..." --weight=1
+ynh_script_progression "Restoring system configurations related to $app..."
 
-ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_restore "/etc/php/$php_version/fpm/pool.d/$app.conf"
 
 # Recreate a dedicated PHP-FPM config
-ynh_add_fpm_config
+ynh_config_add_phpfpm
 
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_restore "/etc/nginx/conf.d/$domain.d/$app.conf"
 
-ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
+ynh_restore "/etc/systemd/system/$app.service"
 systemctl enable "$app.service" --quiet
 yunohost service add "$app" --description="Responsive web-based XMPP client"
 
 #=================================================
 # RELOAD NGINX AND PHP-FPM OR THE APP SERVICE
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server and $app's service..." --weight=1
+ynh_script_progression "Reloading NGINX web server and $app's service..."
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Movim daemon launched"
-ynh_systemd_action --service_name="php$phpversion-fpm" --action=reload
+ynh_systemctl --service="$app" --action="start" --log_path="systemd" --wait_until="Movim daemon launched"
+ynh_systemctl --service="php$php_version-fpm" --action=reload
 
-ynh_systemd_action --service_name=nginx --action="reload"
+ynh_systemctl --service=nginx --action="reload"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for $app"
+ynh_script_progression "Restoration completed for $app"
diff --git a/scripts/upgrade b/scripts/upgrade
index 04df6c6..8eb4ae9 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -7,89 +7,91 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
+ynh_app_setting_set_default --key=php_upload_max_filesize --value=100M
+
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping $app's systemd service..."
+ynh_script_progression "Stopping $app's systemd service..."
 
-ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd"
+ynh_systemctl --service="$app" --action="stop" --log_path="systemd"
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..."
+ynh_script_progression "Ensuring downward compatibility..."
 
 if [ -f "$install_dir/config/db.inc.php" ]; then
-    ynh_secure_remove --file="$install_dir/config/db.inc.php"
+    ynh_safe_rm "$install_dir/config/db.inc.php"
 fi
 
 if [[ -n "${path:-}" ]] && [[ "${path:-}" != "/" ]]; then
-    ynh_die --message="Movim can't be installed in a subdir anymore. Please change_url to the root of a domain before upgrading."
+    ynh_die "Movim can't be installed in a subdir anymore. Please change_url to the root of a domain before upgrading."
 fi
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Upgrading source files..."
+ynh_script_progression "Upgrading source files..."
 
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source --dest_dir="$install_dir" --full_replace=1 --keep=".env"
+ynh_setup_source --dest_dir="$install_dir" --full_replace --keep=".env"
 
 # Patch call to php in composer
-ynh_replace_string -f "$install_dir/composer.json" --match_string='"vendor/bin/phinx' --replace_string='"@php vendor/bin/phinx'
+ynh_replace -f "$install_dir/composer.json" --match='"vendor/bin/phinx' --replace='"@php vendor/bin/phinx'
 
 # Patch call to php in daemon code
-ynh_replace_string -f "$install_dir/src/Movim/Daemon/Session.php" --match_string="exec php" --replace_string="exec php$phpversion"
-
-chmod -R o-rwx "$install_dir"
-chown -R "$app:www-data" "$install_dir"
+ynh_replace -f "$install_dir/src/Movim/Daemon/Session.php" --match="exec php" --replace="exec php$php_version"
 
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 #=================================================
 # UPDATE A CONFIG FILE
 #=================================================
-ynh_script_progression --message="Updating $app's configuration file..."
+ynh_script_progression "Updating $app's configuration file..."
 
-ynh_add_config --template="dot_env" --destination="$install_dir/.env"
+ynh_config_add --template="dot_env" --destination="$install_dir/.env"
 
-chmod 400 "$install_dir/.env"
-chown "$app:$app" "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown "$app:$app" "$install_dir/.env"
 
 #=================================================
 # BUILD MOVIM
 #=================================================
-ynh_script_progression --message="Building $app..."
+ynh_script_progression "Building $app..."
 
-ynh_exec_warn_less ynh_install_composer
+ynh_composer_install
+ynh_composer_exec install --no-dev
 
-COMPOSER_ALLOW_SUPERUSER=1 ynh_exec_warn_less ynh_composer_exec --commands="config --global discard-changes true --quiet"
-COMPOSER_ALLOW_SUPERUSER=1 ynh_exec_warn_less ynh_composer_exec --commands="update --no-interaction --quiet"
-COMPOSER_ALLOW_SUPERUSER=1 ynh_exec_warn_less ynh_composer_exec --commands="movim:migrate --quiet"
+COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec config --global discard-changes true --quiet
+COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec update --no-interaction --quiet
+COMPOSER_ALLOW_SUPERUSER=1 ynh_composer_exec movim:migrate --quiet
 
 #=================================================
 # REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1
+ynh_script_progression "Upgrading system configurations related to $app..."
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config
+ynh_config_add_phpfpm
 
 # Create a dedicated NGINX config
-ynh_add_nginx_config
+ynh_config_add_nginx
 
 # Create a dedicated systemd config
-ynh_add_systemd_config
+ynh_config_add_systemd
 yunohost service add "$app" --description="Responsive web-based XMPP client"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..."
+ynh_script_progression "Starting $app's systemd service..."
 
 # Start a systemd service
-ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Movim daemon launched"
+ynh_systemctl --service="$app" --action="start" --log_path="systemd" --wait_until="Movim daemon launched"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Upgrade of $app completed"
+ynh_script_progression "Upgrade of $app completed"