Fix issues on upgrade of major debian version

scripts/_common.sh

@@ -26,6 +26,13 @@ setup_dir() {
 }
 
 install_source() {
+    # Clean venv is it was on python with an old version in case major upgrade of debian
+    if [ ! -e $final_path/lib/python$python_version ]; then
+        ynh_secure_remove --file=$final_path
+    fi
+
+    mkdir -p $final_path
+
     if [ -n "$(uname -m | grep arm)" ]
     then
         # Clean old file, sometime it could make some big issues if we don't do this !!

scripts/restore

@@ -40,6 +40,10 @@ ynh_system_user_create --username $pgadmin_user --home_dir /var/lib/$app
 ynh_script_progression --message="Restoring files..." --weight=5
 ynh_restore
 
+# Check that the good python version is installed
+# If not upgrade the source
+install_sources
+
 # POPULATE THE DATABASE
 ynh_script_progression --message="Reconfiguring Postgresql database..."
 ynh_psql_test_if_first_run