Gulpfile.js

toolkit.extendConfig({
    /* ... Shortening for brevity, other config would likely be here. */
    css: {
        scss: {
            'style': { /* Override default options by adding 'style' to our config. */
                outputStyle: 'expanded'
            },
            'woocommerce': { /* Output filename */
                src: 'develop/scss/woocommerce.scss', /* Input file */
                dest: 'css/', /* Output path. */
                outputStyle: 'expanded' /* Set expanded output style. */
            },
            'edd': { /* Output filename */
                src: 'develop/scss/edd.scss', /* Input file */
                dest: 'css/', /* Output path. */
                outputStyle: 'compressed' /* Set expanded output style. */
            }
        }
    }
});