zsh functions: add -s flag to mkvenv

functions/python.zsh

@@ -2,15 +2,20 @@ mkvenv(){
     local source_venv
     if [[ $1 == "-s" ]]; then
         source_venv=y
+        shift
     fi
     # any arguments are passed on to the `venv` module as flags/arguments
     if [[ -e .venv ]]; then
         echo "$(color $RED Error:) $(color $BOLD .venv) already exists." >&2
         return 1
     fi
-    echo -n "Creating venv..." && python -m venv $@ .venv && echo -n " done. Enable? [Y/n]"
+
+    echo -n "Creating venv..." && python -m venv $@ .venv
     if [[ -z ${source_venv} ]]; then
+        echo -n " done. Enable? [Y/n]"
         read source_venv
+    else
+        echo ""
     fi
 
     if [[ $source_venv != "n" ]]; then