Is there `kotllin-dsl` version compatible with kotlin plugin `1.4-M1` ?

# gradle

[turansky]

Is there kotllin-dsl version compatible with kotlin plugin 1.4-M1 ?

[eskatos]

The kotlin-dsl plugin is intended to use the version of Kotlin embedded in Gradle. So, no version guaranteed to be compatible.

Did you try applying the kotlin-dsl plugin on a build that uses the 1.4-M1 of the kotlin gradle plugin? With what Gradle version? Does it fail? How?

[turansky]

Gradle 6.3 with kotlin-dsl 1.3.5
Kotlin 1.4-M1

[turansky]

First problem

[eskatos]

Note that you shouldn’t specify a version for the kotlin-dsl plugin.

[eskatos]

Yeah, that’s Kotlin saying mixing versions isn’t supported .. “strange errors” 🙂

[eskatos]

What happens if you let that warning not fail the build?

[turansky]

Solution - duplicate default compiler settings

[eskatos]

Ok, so if you do that, then it works for you?

[turansky]

No

[turansky]

Some collection operations in buildSrc don’t work correctly

[eskatos]

In any case, there’s not much more you can do except trying and crossing fingers. It’s not supported.

[eskatos]

Could you please share the error you get?

[turansky]

I generate code in buildSrc

String.replace don’t replace all entries
Some List elements are lost

[eskatos]

Hum, that sounds like some stdlib incompatibilities between 1.3 and 1.4 ... I suppose that’s a “strange error” like the warning says. 🤷‍♂️

[turansky]

Is there any solution for Kotlin Compiler plugin testing in such situations?

[eskatos]

You would need a Gradle version that embeds Kotlin 1.4 for all this to work. But that will take time before there’s an official one. We might get to publish some nightlies from a Kotlin 1.4 branch but not immediatly.

[eskatos]

Or you could try removing the use of the kotlin-dsl plugin, giving up on its features, and simply use the kotlin gradle plugin in your buildSrc.

[turansky]

kotlin-dsl applied in buildSrc by default. Right?

[eskatos]

The kotlin-dsl plugin isn’t applied by default, you have to do it:

// buildSrc/build.gradle.kts
plugins { `kotlin-dsl` }

If you do, then my suggestion is to remove this plugin application from your buildSrc, giving up on its features.

[turansky]

No warnings without my plugin, which use kotlin-dsl !

[turansky]

But error remains

[turansky]

I can create migration branch if it has value for testing

[turansky]

@eskatos Where will be announced night builds with Kotlin 1.4 ?

[eskatos]

Please subscribe to https://github.com/gradle/gradle/issues/12660, it’ll get updated when we get to it

[russhwolf]

Is there a supported alternative to the kotlin-dsl plugin? I don’t think I’ve ever seen a kotlin buildSrc configuration that doesn’t use it. The need in my case is to be able to define helper functions used in kotlin build scripts in the rest of the project.

[louiscad]

I guess kotlin("jvm") is the one @russhwolf

[turansky]

Update:

• buildSrc - no success with 1.4-M1
Invalid String.replace
Invalid collection operations
• Gradle plugin & ordinal projects - no WA required