yarn install --prod misleading description

[barsolet]

Misleading description "Yarn will not install any package listed in devDependencies" while it actually removes any devDependencies installed previously.

https://classic.yarnpkg.com/en/docs/cli/install/#toc-yarn-install-production-true-false

1. Run yarn
2. Observe node_modules - devDependencies has been installed
3. Run yarn --prod
4. devDependencies has been removed

When we use yarn workspaces, we need to have devDependencies from root package.json, but not from the workspaces.