Replace Yarn v1

[timfish]

Problem Statement

Yarn v1 hasn't been supported for a long time and no longer gets bug fixes. At this point it's passed its best and struggles to resolve dependencies where newer options do not!

Solution Brainstorm

Maybe use Yarn v4?

The main blocker seems to be that Yarn v4 is only distributed via corepack and Volta isn't compatible as it doesn't expose the corepack binary.

[csvan]

If it is any help, we replaced Yarn1 with regular npm 10 and the transition was near seamless.

[timfish]

With all packages cached locally, lock file created and after deleting node_modules on an Mac M1 Pro:

Yarn v1

First install - 61 seconds
Second install - 15 seconds

Yarn v4

First install - 51 seconds
Second install - 5 seconds

npm v10

First install - 75 seconds
Second install - 20 seconds

pnpm v8

First install - Fails while running post install scripts at 80 seconds