In order to manage my own projects better in Angular, I will create some libraries named ngx-suffa in the workspace. Each library will be under the same workspace. For example: @ngx-suffa/core, @ngx-suffa/styles, @ngx-suffa/forms The structure I want here is as follows: @ngx-suffa/core and @ngx-suffa/styles should be as dependencies in the @ngx-suffa/forms library. In other words, when I develop a custom TextBox or SelectBox in ngx-suffa/forms, I can use the colors.scss in the styles. For this I tried: @ngx-suffa/styles - ng-package.json: { "$schema": "../../node_modules/ng-packagr/ng-package.schema.json", "dest": "../../dist/styles", "assets": [ { "input": "src/styles", "glob": "**/*.scss", "output": "styles" } ], "lib": { "entryFile": "src/public-api.ts", "styleIncludePaths": [ "src/styles" ] } } I want to use this in a scss file for the component in @ngx-suffa/forms: @use "@ngx-suffa/styles/styles/colors"; :host { background-color: colors.$orange-500; color: colors.$indigo-500; } However, during the @ngx-suffa/forms build, the following error occurs: X [ERROR] Can't find stylesheet to import. ╷ 1 │ @use "@ngx-suffa/styles/styles/colors"; │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ╵ projects\forms\src\lib\forms.component.scss 1:1 root stylesheet [plugin angular-sass] ✖ Compiling with Angular sources in Ivy partial compilation mode. An error has occuried while processing D:\Projects_Next\ngx-suffa\projects\forms\src\lib\forms.component.scss. When I publish the same @use line to @ngx-suffa/styles library and use it in another Angular Application, it works fine. Continue reading...