我正在学习教程，没什么特别的。我正在尝试添加node-sass和sass-loader通过yarn add.
我运行的命令（我也尝试了可用的最新版本）：
yarn add sass-loader@6.0.6 node-sass@4.5.3
这失败了，这是输出：
yarn add v1.9.2
[1/4] Resolving packages...
[2/4] Fetching packages...
warning Pattern ["colors@latest"] is trying to unpack in the same destination "C
:\\Users\\sagil\\AppData\\Local\\Yarn\\Cache\\v1\\npm-colors-1.1.2-168a4701756b6
a7f51a12ce0c97bfa28c084ed63" as pattern ["colors@~1.1.2"]. This could result in
non-deterministic behavior, skipping.
warning Pattern ["object-assign@latest"] is trying to unpack in the same destina
tion "C:\\Users\\sagil\\AppData\\Local\\Yarn\\Cache\\v1\\npm-object-assign-4.1.1
-2109adc7965887cfc05cbbd442cac8bfbb360863" as pattern ["object-assign@^4.1.0","o
bject-assign@^4.1.0","object-assign@^4.0.1","object-assign@^4.0.1","object-assig
n@^4.0.1","object-assign@^4.0.1","object-assign@^4.1.0","object-assign@^4","obje
ct-assign@^4.1.1","object-assign@^4.1.0","object-assign@^4.1.1","object-assign@^
4.1.1","object-assign@^4.0.1","object-assign@^4.0.1","object-assign@^4.0.1","obj
ect-assign@^4.0.1","object-assign@^4.0.1"]. This could result in non-determinist
ic behavior, skipping.
info fsevents@1.1.2: The …我在谷歌上搜索它并得到以下结果。
工具链是一组编程工具，用于执行复杂的>软件开发任务或创建软件产品，通常是>另一个计算机程序或一组相关程序
从上面的段落中，我了解到工具链或编译器工具链用于开发任何软件产品，例如操作系统（我不确定如果我错了请纠正）
如果是这样，我目前使用的是 Ubuntu 16.04。我发现上面预装了一个编译器工具链。但是操作系统已经完全开发了，那么在构建单独的软件产品之前，这里还需要什么工具链呢？