uniapp怎么配置使用全局导入less文件？

我试了以下几种配置vue.config.js来全局导入less，都不行：

const path = require('path')  
const CopyWebpackPlugin = require('copy-webpack-plugin')  

let stylePath = path.resolve(__dirname, 'assets/css/utils.less')  
module.exports = {  
    css: {  
            loaderOptions: {  
                less: {  
                    // additionalData: `@import "~@/assets/css/utils.less";`,  
                    globalVars:{  
                        "hack": `true; @import "${stylePath}"`  
                    }  
                }  
            }  
    },  
    chainWebpack: config =>{  
        config.module.rule('less').use('less-loader').loader('less-loader').tap(options=>{  
            options.additionalData = `@import "~@/assets/css/utils.less";`  
            return options  
        })  
    },  
    pluginOptions: {  
          'style-resources-loader': {  
            preProcessor: 'less',  
            patterns: [path.resolve(__dirname, "assets/css/utils.less")]   
          }  
    },  
}  

请问到底要怎么样配置才能全局导入less？