[Bug] Yarn 2 should run child processes with the same Node

[segrey]

Describe the bug

In Yarn 2 child processes are run with Node.js interpreter from PATH, not with the Node that is running Yarn itself.

To Reproduce

Yarn 2 (yarn set version from sources)

$ yarn --version
2.0.0-rc.7
$ which node
/home/segrey/.nvm/versions/node/v12.11.1/bin/node
$ /home/segrey/.nvm/versions/node/v12.11.1/bin/node /usr/share/yarn/bin/yarn.js node -e "console.log(process.version)"
v12.11.1
$ /home/segrey/.nvm/versions/node/v10.8.0/bin/node /usr/share/yarn/bin/yarn.js node -e "console.log(process.version)"
v12.11.1

Works correctly in Yarn 1:

$ yarn --version
1.19.0
$ which node
/home/segrey/.nvm/versions/node/v12.11.1/bin/node
$ /home/segrey/.nvm/versions/node/v12.11.1/bin/node /usr/share/yarn/bin/yarn.js node -e "console.log(process.version)"
yarn node v1.19.0
v12.11.1
Done in 0.04s.
$ /home/segrey/.nvm/versions/node/v10.8.0/bin/node /usr/share/yarn/bin/yarn.js node -e "console.log(process.version)"
yarn node v1.19.0
v10.8.0
Done in 0.06s.

Environment if relevant (please complete the following information):

• OS: Linux
• Node version v12.11.1, v10.8.0
• Yarn version 1.19.0, 2.0.0-rc7

[arcanis]

Found the problem - the v1 has a bug where it spawns the file pointed by yarn-path as any other process (whereas the v2 always assumes it's a JS file, and uses process.execPath to spawn it).

That causes the checked-in v2 binary to be executed via the node binary available in the PATH instead of the one originally used to spawn the v1 binary. Will fix that on the v1 side.

[arcanis]

Will be fixed by yarnpkg/yarn#7592

[arcanis]

Closing, the fix got released in the 1.19.1 👍

[segrey]

Great, thanks!

…

On Tue, Oct 15, 2019, 10:22 Maël Nison ***@***.***> wrote: Closed #502 <#502>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#502?email_source=notifications&email_token=AAEUHBJIIC3R6LUIH5DQMATQOVVSJA5CNFSM4I4PEAC2YY3PNVWWK3TUL52HS4DFWZEXG43VMVCXMZLOORHG65DJMZUWGYLUNFXW5KTDN5WW2ZLOORPWSZGOUGZIJWQ#event-2712831194>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEUHBNCGVFFFBTCWPHLZNLQOVVSJANCNFSM4I4PEACQ> .