Yarn: nvm is not compatible with the "PREFIX" environment variable

[peterharding]

Do you want to request a feature or report a bug?
Bug

What is the current behavior?
When executing a shell script from package.json scripts that uses nvm, this error is shown:

nvm is not compatible with the "PREFIX" environment variable: currently set to "/usr/local"
Run `unset PREFIX` to unset it.

If the current behavior is a bug, please provide the steps to reproduce.
Minimal repository: https://github.com/peterharding/yarn_prefix_bug

What is the expected behavior?
yarn run <command> behaves the same as npm run <command> and does not produce an error.

Please mention your node.js, yarn and operating system version.
Versions used:
nvm 0.33.4
node v8.9.1
yarn 1.3.2
OSX 10.11.6

[arcanis]

We don't change the value of the PREFIX afaik. Have you checked if you have it in your environment?

[peterharding]

https://github.com/peterharding/yarn_prefix_bug
updated with log files that have full env outputs

[peterharding]

https://github.com/yarnpkg/yarn/blob/master/src/registries/npm-registry.js#L46
possible culprit

[yyjazsf]

when I use yarn 1.3.x ,vscode integrated terminal usually report it. but my iTerm2 is ok. now,I use yarn 1.5.1. all terminal are work well,you can try to update yarn

[ramanandapanda]

just force closing the terminal and reopening worked for me.