How can I exclude files from being processed by OpenRewrite (version 7.+)?

[FVenneri]

With the switch to the 7.+ version, in one of our projects we're having some issues with the undesired processing of the Gradle build file, as there are functions and OpenRewrites adds val in the functions, messing up the file.

This is now the task is configured in the Gradle build file:

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-static-analysis:2.4.0")
    rewrite("org.openrewrite.recipe:rewrite-migrate-java:3.4.0")
}

rewrite {
    activeRecipes.addAll(
        listOf(
            "org.openrewrite.staticanalysis.FinalizeMethodArguments",
            "org.openrewrite.staticanalysis.FinalizePrivateFields",
            "org.openrewrite.staticanalysis.FinalizeLocalVariables",
            "org.openrewrite.staticanalysis.RemoveUnusedLocalVariables",
            "org.openrewrite.staticanalysis.RemoveUnusedPrivateMethods",
            "org.openrewrite.staticanalysis.RemoveUnusedPrivateFields",
            "org.openrewrite.java.migrate.lang.var.UseVarForPrimitive",
            "org.openrewrite.java.migrate.lang.var.UseVarForGenericsConstructors",
            "org.openrewrite.java.RemoveUnusedImports",
            "org.openrewrite.java.format.Spaces")
    )
}

And this is what it does into the build file:

-fun isAJavaProject(project: Project): Boolean {
+fun isAJavaProject(valproject: Project): Boolean {
     return !project.name.contains("bom")
 }

Of course, this breaks the build as it's breaking the syntax...

I have tried adding exclusions following all the suggestions found online and with AI, which are:

1. Using filter { excludeFile("**/*.kts") }
2. Using plainTextMasks in the DSL
3. Using tasks.withType<RunRewriteTask>().configureEach { exclude("**/*.kts") } (properly indented)
4. Defining the exclusions in the rewrite.yml file
5. Using sourceSet

Most of them don't compile because of unresolved references...

I ran out of options, so this is the last place where I have hopes to find an answer.