Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Cannot use ktfmt with Kotlin 1.6.0

See original GitHub issue

Hi there!

Now that Kotlin 1.6.0 is out, I just attempted to upgrade one of our projects and hit a roadblock with ktfmt (used via the Spotless Gradle Plugin, but configured to use the latest ktfmt 0.29 version):

> Task spotlessKotlin FAILED
Step 'ktfmt' found problem in '/path/to/some/file.kt':
Unsupported runtime Kotlin version: 1.6.0
java.lang.RuntimeException: Unsupported runtime Kotlin version: 1.6.0
        at com.facebook.ktfmt.FormatterKt.createAstVisitor(Formatter.kt:162)
        at com.facebook.ktfmt.FormatterKt.prettyPrint(Formatter.kt:136)
        at com.facebook.ktfmt.FormatterKt.format(Formatter.kt:124)
        at com.facebook.ktfmt.FormatterKt.format(Formatter.kt:105)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at com.diffplug.spotless.kotlin.KtfmtStep$State.lambda$createFormat$0(KtfmtStep.java:128)
        at com.diffplug.spotless.FormatterFunc.apply(FormatterFunc.java:32)
        at com.diffplug.spotless.FormatterStepImpl$Standard.format(FormatterStepImpl.java:78)
        at com.diffplug.spotless.FormatterStep$Strict.format(FormatterStep.java:76)
        at com.diffplug.spotless.Formatter.compute(Formatter.java:230)
        at com.diffplug.spotless.PaddedCell.calculateDirtyState(PaddedCell.java:201)
        at com.diffplug.spotless.PaddedCell.calculateDirtyState(PaddedCell.java:188)
        at com.diffplug.gradle.spotless.SpotlessTaskImpl.processInputFile(SpotlessTaskImpl.java:88)
        at com.diffplug.gradle.spotless.SpotlessTaskImpl.performAction(SpotlessTaskImpl.java:74)

I saw that 37525533aa8c32d1a501bc7f617b05179311752d somehow fixes this issue. So my question is, do you intend to publish a new release of ktfmt with this commit (even if new language features are not handled yet) ? This would unblock projects migrating to Kotlin 1.6. Or at least, publishing a snapshot version would be great as well.

Thanks.