Trying to upgrade Kotlin from 2.2.0 -> 2.2.10 a...

# javascript

[grahamborland]

Trying to upgrade Kotlin from 2.2.0 -> 2.2.10 and started getting this error:

Execution failed for task ':kotlinNpmInstall'.
>                 Process 'Resolving NPM dependencies using yarn' returns 1
                  Unknown Syntax Error: Unsupported option name ("--network-concurrency").

Any workaround?

[Vampire]

Do you maybe use an ancient yarn version?
That option exists for nearly 10 years.

[Edoardo Luppi]

For reference, this was introduced in https://youtrack.jetbrains.com/issue/KT-78504
I also left a comment asking why using it, since there is also a mutex being used.

[grahamborland]

We’re not specifying any particular Yarn version anywhere.

[Edoardo Luppi]

Are you on Windows?

[Edoardo Luppi]

Look under %USER_HOME%/.gradle/yarn, which versions do you see?

[grahamborland]

Happens both on Mac and Linux CI.

ls ~/.gradle/yarn
yarn-v1.22.10/      yarn-v1.22.10.hash  yarn-v1.22.17/      yarn-v1.22.17.hash

[Edoardo Luppi]

Could you try checking their --help to see if they both list --network-concurrency?

[Artem Kobzar]

@Ilya Goncharov [JB] ^^

[grahamborland]

We have

rootProject.the<YarnRootEnvSpec>().download = false

I guess for build performance reasons. Setting that to true resolves the issue, so I’ll do some digging to figure out what Yarn versions we have installed. Looks like I also have 4.6.0 which doesn’t support the --network-concurrency option.

Thanks for the help!

[Edoardo Luppi]

Remember to use Yarn Classic only, for compatibility reasons.
Or, you can switch to npm. See https://kotlinlang.org/docs/js-project-setup.html#npm-dependencies