`brew link node` required for Yarn install

[sdaitzman]

Do you want to request a feature or report a bug?
Bug
What is the current behavior?
Installing Yarn using the Homebrew formula requires that node be installed and linked using Homebrew, which is a conflict for people (such as me) who update and switch between node binaries with https://github.com/tj/n
If the current behavior is a bug, please provide the steps to reproduce.
Run $ brew install yarn
What is the expected behavior?
Provide a warning if node.js is not linked using Homebrew, without erroring
Please mention your node.js, yarn and operating system version.
node v6.7.0, yarn not installed, macOS 10.12.1 (16B2555)

[elaijuh]

same for me, using nvm is ok

[sdaitzman]

@elaijuh this is because nvm (as of last time I looked at their code) relies on hacky shell modifications to switch node versions, meaning it should never be used in production and sometimes breaks modules.

My temporary fix is removing n's installed node, forcing Homebrew to link its node, installing yarn with Homebrew, and then overwriting Homebrew's node link with n's node. (Or just installing with npm, I assume 😋 )

[elaijuh]

@sdaitzman i think i will go npm way before some neat solution comes out, thanks.

[wavded]

Same issue. I cannot run node6-lts node and upgrade yarn at the same time because of this error.

[wavded]

To get around this issue for now I do:

brew unlink node6-lts
brew link node
brew upgrade # to update yarn
brew unlink node
brew link node6-lts

[mgol]

@sdaitzman nvm is not hacky; most of what it does is just to prepend the path to currently chosen Node.js binaries to PATH and that's it. I'd say solutions like rbenv or pyenv that install shims that dispatch binaries to a proper Ruby/Python version dynamically are what's hacky, not what nvm does. Changing PATH is a pretty standard thing to do.

[altern8tif]

So should there be/is there gonna be a fix for this? Or are n users gonna have to mess around with brew to upgrade yarn?

[OmerHerera]

I have the same issue here.

Some how I succeed installing yarn v0.18.1 using brew but I got stuck now with this version, I want to upgrade and I got this message: Error: You must brew link node before yarn can be installed

I must mention that I'm using also using n for managing my node version, this is a must because I'm working in different projects with different node versions.
I really don't wan to stop using n and also don't want to start removing my node version I installed.

Is there a solution for us?
Thanks

[phil-r]

Same problem as @OmerHerera but I'm using nvm

➜  node -v
v6.9.2
➜  brew -v
Homebrew 1.1.7-60-g9f183be35
Homebrew/homebrew-core (git revision 98466; last commit 2017-01-18)
➜  yarn --version
0.18.1

macOS 10.12.2

[OmerHerera]

I succeed upgrading running:
curl -o- -L https://yarnpkg.com/install.sh | bash

[phil-r]

@OmerHerera I did that, but yarn --version is still 0.18.1

Edit: Completely uninstalled and reinstalled using this method and now it's updated, but this is kinda kills the purpose of brew

[OmerHerera]

Somehow for me it succeed
yarn --version
0.19.1

Sorry to hear that :-(

[iddan]

Should make more versions of node installs (i.e node@6) to be valid for yarn