"yarn global add" doesn't globally install packages if .yarn-cache was restored

[ide]

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

What is the current behavior?
If you restore .yarn-cache from another machine (e.g. on a CI system) that had a globally installed package, then running yarn global add <pkg> doesn't install the package on the new machine.

If the current behavior is a bug, please provide the steps to reproduce.
Set up a circle.yml file that tells CircleCI to cache ~/.yarn-cache. Run a build and then run it again (make sure in the "Restore cache" step that home/ubuntu/.yarn-cache is restored).

The second time around, even though yarn global add codecov runs successfully and says success Installed codecov@1.0.1 with binaries: codecov, the codecov package is missing. It doesn't place anything in nvm's global node_modules folder nor the bin folder.

machine:
  pre:
    - mkdir ~/.yarn-cache
  node:
    version: 6

dependencies:
  cache_directories:
    - ~/.yarn-cache
  pre:
    - curl -o- -L https://yarnpkg.com/install.sh | bash
    - yarn global add codecov
  override:
    - yarn

test:
  pre:
    - yarn run lint
  override:
    - yarn test -- --coverage
  post:
    - codecov

What is the expected behavior?
yarn global add <pkg> should reinstall the package. As a workaround, using npm or yarn global remove <pkg> works fine.

Please mention your node.js, yarn and operating system version.
Node 6.8.1 installed with nvm 0.31.0
Yarn 0.15.1 installed via curl + bash
Ubuntu 12.04 on CircleCI

[WoodyWoodsta]

I'm having the same issue, but with different circumstances. If I install a new version of node alongside an old version (using nvm), then yarn global add does not result in any packages being installed in the new bin. I assume that installing yarn in the new version of node results in the cache being "restored" from the old version of node?

[jch254]

^ Me too!

[IcanDivideBy0]

Same issue, using

  post:
    - bash <(curl -s https://codecov.io/bash)

is fast enouth (more than npm) and don't require to install any dependency

[andrewmclagan]

yeah we are also having this same issue

[tusharmath]

@andrewmclagan I had some issues like these after some debugging I realized that there were two versions of yarn. After that you must make sure that the bin folder is in the path variable —

export PATH="/usr/local/bin:/Users/andrew/.config/yarn/global/node_modules/.bin"

[iryston]

More universal export (without username):
PATH="${HOME}/.config/yarn/global/node_modules/.bin${PATH:+:${PATH}}"; export PATH;

[IzaGz]

@iryston where should i put this?

[iryston]

@IzaGz it depends on your OS and shell.
If you have *NIX & BASH put it in .bashrc or .bash_profile.
For ZSH put it in .zshrc or .zprofile.

[casaper]

More universal export (without username):
PATH="${HOME}/.config/yarn/global/node_modules/.bin${PATH:+:${PATH}}"; export PATH;

why so complicated?
Here this does the job equally well and universal …
export PATH="$PATH:$HOME/.config/yarn/global/node_modules/.bin"