Following tutorial, yarn create redwood-app on macOS errors (when using N rather than NVM)

I’m running macOS 10.15.3 (19D76), following the tutorial, when I run

yarn create redwood-app ./redwoodblog

It fails because of node engine incompatibilities (full output below). I tried yarn’s --ignore-engines flag but it doesn’t seem to work for create.

One thing, I’m using n not nvm to manage my node versions, and tried some other node versions, but they all had issues. So maybe it’s n related? Maybe notably I can successfully install the example blog repo by cloning it down and running yarn.

Running with:

▶ node --version
v12.16.1
▶ yarn --version
1.19.2

Full output:

▶ yarn create redwood-app ./redwoodblog
yarn create v1.19.2
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
info @expo/traveling-fastlane-linux@1.13.1: The platform "darwin" is incompatible with this module.
info "@expo/traveling-fastlane-linux@1.13.1" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-darwin-ia32@2.2.8: The CPU architecture "x64" is incompatible with this module.
info "@expo/ngrok-bin-darwin-ia32@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-freebsd-ia32@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-freebsd-ia32@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-freebsd-ia32@2.2.8: The CPU architecture "x64" is incompatible with this module.
info @expo/ngrok-bin-freebsd-x64@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-freebsd-x64@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-linux-arm@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-linux-arm@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-linux-arm@2.2.8: The CPU architecture "x64" is incompatible with this module.
info @expo/ngrok-bin-linux-arm64@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-linux-arm64@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-linux-arm64@2.2.8: The CPU architecture "x64" is incompatible with this module.
info @expo/ngrok-bin-linux-ia32@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-linux-ia32@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-linux-ia32@2.2.8: The CPU architecture "x64" is incompatible with this module.
info @expo/ngrok-bin-linux-x64@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-linux-x64@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-sunos-x64@2.2.8: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-sunos-x64@2.2.8" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-win32-ia32@2.2.8-beta.1: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-win32-ia32@2.2.8-beta.1" is an optional dependency and failed compatibility check. Excluding it from installation.
info @expo/ngrok-bin-win32-ia32@2.2.8-beta.1: The CPU architecture "x64" is incompatible with this module.
info @expo/ngrok-bin-win32-x64@2.2.8-beta.1: The platform "darwin" is incompatible with this module.
info "@expo/ngrok-bin-win32-x64@2.2.8-beta.1" is an optional dependency and failed compatibility check. Excluding it from installation.
error upath@1.0.4: The engine "node" is incompatible with this module. Expected version ">=4 <=9". Got "12.16.1"
error Found incompatible module.
info Visit https://yarnpkg.com/en/docs/cli/create for documentation about this command.

Thanks!

[fnky]

Just to chime in; the cause of the errors is because there are global modules installed which are incompatible with your current node version. Running yarn create is equivalent to yarn global add, which means that it validates the globally installed packages.

For example; use an old version of node and install a module that targets older node versions and then switch to a newer version and do a global install. This will fail due to incompatible engines, specified by the module.

The issue itself is that yarn create accept arguments like --ignore-engines to have yarn ignore engines as part of the validation.

[elebumm]

Thanks for the reply @thedavidprice.

I truly believe the issue came down to having multiple versions of yarn. Running a which yarn showed that the yarn was running in /usr/local/bin/yarn which meant it wasn’t running in my local nvm instance.

I brew uninstall yarn and then did a npm install -g yarn in my nvm instance which then made a new yarn in that nvm instance.

I still found that when I did a yarn create... it gave me the same error, but this time I was able to ignore engines using the command in my previous answer. Perhaps a caching issue on mac and yarn?

Glad I got it working though. Hopefully @zischwartz this answer helps you too.

Going through the tutorial and it’s working great. Loving redwood so far.

Cheers David.