It looks like you should be able to prepend the import to all of your SASS files like so as well if that’s what you are looking to do.
bud.config.js
/**
* @typedef {import('@roots/bud').Bud} bud
*
* @param {bud} app
*/
module.exports = (app) => {
app
.tap((app) =>
app.build.items.sass.setOptions({
additionalData: '@import "@styles/common/variables";',
}),
)
// rest of bud config
};
You can find more detail about the additionalData option here