Extending Valo, Sass compilation in Netbeans, NO PLUGIN

Hello all -
I'm trying to build out as lightweight a Vaadin application as possible.  I have created it in Netbeans without using the plugin and I don't want to use Maven or any dependency management.  The application works, with Valo as theme.  When I use @Theme("mytheme") and extend Valo, the scss processing fails to compile the VALO scss on the fly.  I get my own rules working, but the valo details don't come over.

Is there a way to setup Netbeans to still compile the Vaadin SCSS on the fly for development mode?   Please do not recommend Maven -- I'm looking for an alternative to that approach.  Thank you!

there is possible to make css from scss by you own, by using ruby or nodejs, and then you can make a compile application.