`Error: Cannot find module 'metro-cache'` when initiating the new ignite project about ignite HOT 6 OPEN

@morganick probably related: expo/expo-cli#1073 (comment)

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@frankcalise I was able to replicate the issue above with the following steps:

1. Use yarn 1.22.22 to Ignite a new project
2. @naoyamakino is using yarn 4.1.1 so let's move to that yarn set version stable
3. yarn install && yarn ios
4. 🙌 the application builds without issue.
5. rm -rf node_modules and edit the .yarnrc.yml file to remove the line nodeLinker: node-modules
6. yarn install && yarn ios
7. 💥 the error that @naoyamakino is seeing above

The reason this works for switching to yarn 4.1.1 after the application is Ignited the first time is that yarn 4.1.1 will migrate the repo on first yarn install after setting the new yarn version:

➤ YN0087: Migrated your project to the latest Yarn version 🚀

This adds the missing piece to our .yarnrc.yml file: nodeLinker: node-modules.

I thought we were detecting the yarn version and adding this into the .yarnrc.yml file, but I can't find a reference to that in the repo.

@naoyamakino adding nodeLinker: node-modules to your .yarnrc.yml will get things working for you. Otherwise, yarn goes into PnP mode, which I've yet to see work on any project 😅. You may also see the following folders and directories from PnP that you can get rid of:

.pnp.cjs
.pnp.loader.mjs
.yarn/unplugged

@naoyamakino thanks for reporting the issue 🙌

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Thanks! I believe that worked! I am having a separate issue, which seems to be related to expo/expo#28345, but that is at least different from what I faced in this issue. thank you for resolving this!

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You're welcome @naoyamakino 🙌 Happy coding!

@frankcalise shall we close this as an expo issue or did we want to do yarn version detection?

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You're welcome @naoyamakino 🙌 Happy coding!

@frankcalise shall we close this as an expo issue or did we want to do yarn version detection?

@morganick So if we wanted to enhance the cli to work with yarn 2+, what would that look like?

Something like this we did for pnpm depending on the yarn version? https://github.com/infinitered/ignite/blob/master/src/commands/new.ts#L615-L621

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@frankcalise Yes! That's the one I was thinking about! Yeah, we could do something similar for Yarn 2+.

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