How to Import sass files in angular 6

I realize this is an older question, but keeps coming up in searches so I figure an update is in order. There is a way to define your own import paths for SASS like node_modules libraries, all you need to do is make a stylePreprocessorOptions entry in the options section of the angular.json file. You do not need to include everything using src\sass

angular.json

"options": {
  "outputPath": "dist/App",
  "index": "src/index.html",
  "main": "src/main.ts",
  "polyfills": "src/polyfills.ts",
  "tsConfig": "src/tsconfig.app.json",
  "assets": [
    "src/favicon.ico",
    "src/assets"
  ],
  "styles": [
    "src/sass/styles.scss"
  ],
  "stylePreprocessorOptions": {
    "includePaths": [
      "src/sass"
    ]
  },
  "scripts": []
},

Then in your styles you can simply import them using

styles.sass

Note: Don’t include the file extension or an initial ~.

@import 'variables'; // Imports from src/sass
@import 'mixins;