Does not use globally installed node-gyp

[jeffrson]

Describe the bug

I'm trying to install "argon2" (yarn add argon2) with node 13.9.0 - there's no prebuilt binary yet, so it needs to be built.

First there is a YN0032 warning - I've read https://yarnpkg.com/advanced/error-codes#yn0032---node_gyp_injected and I could fix the issue by yarn add node-gyp. I thought about reporting a bug against argon2 - such that the should need to declare a peerDependency or dependency.

However, I was wondering why yarn does not use the node-gyp version I had installed previously by npm i -g node-gyp.

Should it use an existing node-gyp (like yarn1 does)?

[arcanis]

However, I was wondering why yarn does not use the node-gyp version I had installed previously by npm i -g node-gyp.

Because Yarn aims to provide reproducible builds, and relying on global binaries would necessarily goes against this goal (you'd have a different node-gyp version from one install to another, causing different issues to appear).