Can't upgrade workspace packages in clean repo install

[danoc]

More context: yarnpkg/yarn#7734 (comment)

Downgrading Yarn may work, but I haven't tried that yet.

[danoc]

If you've installed Yarn with Homebrew, this can be used to downgrade to 1.16.0:

brew unlink yarn
brew install https://raw.githubusercontent.com/karlhorky/homebrew-core/f8bc263f93dcfd1cc50c98976a8503c8a7cb032f/Formula/yarn.rb
brew switch yarn 1.16.0

Edit: This might not work in newer versions of Homebrew. If you get an error, download the yarn.rb file and use the path to the file on your local machine rather than trying to install from GitHub.

[danoc]

Confirmed that downgrading Yarn works.