I'm trying to avoid IntelliJ because I only need it for editing TeamCity build configuration files, that are written in a Kotlin based DSL [0], and autocomplete and linting are be very helpful.

I've tried Eclipse and VS Code but I don't get them to autocomplete or detect syntax correctly. Would any LSP help me with that? As I have no idea about Java, Kotlin or Gradle, everything is kinda confusing to me...

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  0: https://www.jetbrains.com/help/teamcity/kotlin-dsl.html