I love yarn workspaces, but more often than not I find myself having to pull out a specific package because of incompatibilities with external tools.
The main issue is that I don't have their source code in the relative node_modules, but a few levels above (which is normal for yarn workspaces and node, in general).
For instance, ZeppelinOS gives the following error message when "openzeppelin-eth" is not found in the relative path:
Could not find a zos.json file for 'openzeppelin-eth'. Make sure it is provided by the npm package.
Is there a way to force-copy a package? I read about --focus, but it's not what I need.