UpgradeToJava21 removes `import lombok.*;` without adding explicit imports

[sergeykad]

What version of OpenRewrite are you using?

• OpenRewrite plugin v7.23.0
• rewrite-recipe-bom v3.4.0
• rewrite-migrate-java (from BOM)

How are you running OpenRewrite?

Gradle plugin via init script on a multi-module project (~200 modules).

initscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2" }
    }
    dependencies { classpath("org.openrewrite:plugin:7.23.0") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite(platform("org.openrewrite.recipe:rewrite-recipe-bom:3.4.0"))
        rewrite("org.openrewrite.recipe:rewrite-migrate-java")
    }
    rewrite {
        activeRecipe("org.openrewrite.java.migrate.UpgradeToJava21")
    }
}

What is the smallest, simplest way to reproduce the problem?

package com.example;

import lombok.*;

@AllArgsConstructor
@NoArgsConstructor
@ToString
@Data
@EqualsAndHashCode
public class AuthHeaders {
    String authHeader;
    String token;
}

Run: ./gradlew --init-script init.gradle rewriteRun

Note: The bug occurs in multi-module projects. I could not reproduce it in a single-module project.

What did you expect to see?

Either unchanged code, or expanded explicit imports:

package com.example;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import lombok.ToString;

@AllArgsConstructor
@NoArgsConstructor
@ToString
@Data
@EqualsAndHashCode
public class AuthHeaders {
    String authHeader;
    String token;
}

What did you see instead?

The import lombok.*; line was removed without replacement:

package com.example;

@AllArgsConstructor
@NoArgsConstructor
@ToString
@Data
@EqualsAndHashCode
public class AuthHeaders {
    String authHeader;
    String token;
}

This breaks compilation because the Lombok annotations are no longer imported.

Scale of impact

In our project, rewriteDryRun reports:

• 95 files lose import lombok.*;
• 0 files gain explicit lombok imports

The recipe chain shows:

org.openrewrite.java.migrate.UpgradeToJava21
  org.openrewrite.java.migrate.UpgradeToJava17
    org.openrewrite.java.migrate.Java8toJava11
      org.openrewrite.java.migrate.lombok.UpdateLombokToJava11
        org.openrewrite.java.migrate.lombok.LombokValToFinalVar

What is the full stack trace of any errors you encountered?

No stack trace. The recipe completes successfully but produces invalid code.

Are you interested in contributing a fix to OpenRewrite?

Yes, with guidance on where the import removal logic resides.