kotlin source directories not analysed when android variant is used

[yachoor]

Expected Behavior

Code under src/variant1/kotlin should be analysed when gradle detektVariant1Debug task is run

Observed Behavior

Only code under src/variant1/java is analysed

Steps to Reproduce

DetektBug.zip sample project with one variant and 4 classes with same naming issue:

• Test1 under src/main/java
• Test2 under src/main/kotlin
• Test3 under src/variant1/java
• Test4 under src/variant1/koltin

When running gradle task detekt I get issues in Test1 and Test2, but when running detektVariant1Debug, I get issues only in java files - Test1 and Test3

Your Environment

Tried android gradle plugin version 4.2.0, 7.0.0, 7.1.0 - same result, using detekt 1.19.0

[cortinico]

Thanks for providing a reproducer 🙏 Here the fix:

• Fix for missing /kotlin folder when running on Android projects #4554

[Goooler]

Link JLLeitschuh/ktlint-gradle/issues/524, kotlin sourceSet should be added from AGP 7.0, this issue was blocked by #4133 then.