Yarn run doesn't work as expected

[tigranavetis]

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

What is the current behavior?
When I run yarn run <script>, where is script is specified in 'scripts' part of package.json, I get an error:
error Command failed with exit code 127. info Visit http://yarnpkg.com/en/docs/cli/run for documentation about this command.

If the current behavior is a bug, please provide the steps to reproduce.
Go to the folder of your project and yarn run, after choose one the commands.

What is the expected behavior?
Expected behaviour is executing scripts without any problems

Please mention your node.js, yarn and operating system version.
Node.js version - 6.8.0, yarn 0.15.1, operating system version - OS X EL Capitan Version 10.11.5

[jenschude]

Have the same issue. Arises cause most scripts make use executables found in node_modules/.bin

Seems that the run command is not setting correctly the PATH environment for the run shell

[jenschude]

Btw seems to be a duplicate of #733

[sebmck]

Fixed via #809.