Mark 'venv sync' as deprecated

Author: connesy

src/venv-cli/venv.sh

@@ -301,7 +301,10 @@ venv::clear() {
 venv::sync() {
   if venv::_check_if_help_requested "$1"; then
     echo "venv sync [<lock file>]"
-    echo
+    echo ""
+    echo "DEPRECATED: This command is deprecated and will be removed in version 2.0."
+    echo "Use 'venv install <requirements.lock>' instead."
+    echo ""
     echo "Remove all installed packages from the environment (venv clear)"
     echo "and install all packages specified in <lock file>."
     echo "The <lock file> must be in the form '*requirements.lock'."
@@ -318,6 +321,8 @@ venv::sync() {
     return "${_success}"
   fi
 
+  venv::color_echo "${_yellow}" "DEPRECATED: This command is deprecated and will be removed in version 2.0. Use 'venv install <requirements.lock>' instead."
+
   local lock_file
   if [ -z "$1" ]; then
     # If no argument passed