This should be what you need:
var cssTasks = function(filename) {
return lazypipe()
.pipe(function() {
return $.if(!enabled.failStyleTask, $.plumber());
})
.pipe(function() {
return $.if(enabled.maps, $.sourcemaps.init());
})
.pipe(function() {
return $.if('*.less', $.less());
})
.pipe(function() {
return $.if('*.scss', $.ruby-sass({
precision: 10,
compass: true
}));
})
.pipe($.concat, filename)
.pipe($.pleeease, {
autoprefixer: {
browsers: [
'last 2 versions', 'ie 8', 'ie 9', 'android 2.3', 'android 4',
'opera 12'
]
}
})
.pipe(function() {
return $.if(enabled.rev, $.rev());
})
.pipe(function() {
return $.if(enabled.maps, $.sourcemaps.write('.'));
})();
};
This requires gulp-ruby-sass to be installed so npm install --save gulp-ruby-sass. You also have to bring your own config.rb and install compass on your machine.