quarkusio/quarkus · error · MojoExecutionException

Unable to remove extensions

Error message

Unable to remove extensions

What it means

RemoveExtensionMojo (mvn quarkus:remove-extension) throws this MojoExecutionException when the underlying RemoveExtensions command reports a non-success outcome. It means the Quarkus command framework refused to remove the requested extensions from the project (e.g. the extension is not a registered dependency, or the pom rewrite was not performed). Note the separate catch block rethrows a different message, so this specific error surfaces only when the command executed but returned isSuccess()==false.

Source

Thrown at devtools/maven/src/main/java/io/quarkus/maven/RemoveExtensionMojo.java:64

    @Override
    public void doExecute(final QuarkusProject quarkusProject, final MessageWriter log) throws MojoExecutionException {

        Set<String> ext = new HashSet<>();
        if (extensions != null && !extensions.isEmpty()) {
            ext.addAll(extensions);
        } else {
            // Parse the "extension" just in case it contains several comma-separated values
            // https://github.com/quarkusio/quarkus/issues/2393
            ext.addAll(Arrays.stream(extension.split(",")).map(s -> s.trim()).collect(Collectors.toSet()));
        }

        try {
            final QuarkusCommandOutcome outcome = new RemoveExtensions(quarkusProject)
                    .extensions(ext.stream().map(String::trim).collect(Collectors.toSet()))
                    .execute();
            if (!outcome.isSuccess()) {
                throw new MojoExecutionException("Unable to remove extensions");
            }
        } catch (Exception e) {
            throw new MojoExecutionException("Unable to update the pom.xml file", e);
        }
    }
}

View on GitHub (pinned to e1c734241f)

Solutions

1. Verify the exact artifactId with `mvn quarkus:list-extensions` and retry with matching names
2. Check the pom.xml: the extension must be a direct dependency to be removable; remove the transitive source instead
3. Ensure the project has a Quarkus platform BOM/import configured
4. Run with -X / -e to see the underlying cause logged by the command

Example fix

// before
mvn quarkus:remove-extension -Dextensions=quarkus-hibernate-ormn
// after
mvn quarkus:list-extensions   # confirm exact name
mvn quarkus:remove-extension -Dextensions=quarkus-hibernate-orm

// Before running the mojo, verify each extension is a direct dependency:
mvn quarkus:list-extensions | grep '<extension>'
// or programmatically:
boolean isDirect = project.getDependencies().stream()
    .anyMatch(d -> d.getGroupId().equals("io.quarkus") && d.getArtifactId().equals(ext));

try { outcome = new RemoveExtensions(quarkusProject).extensions(names).execute();
  if (!outcome.isSuccess()) { log.warn("Removal refused: check that extensions are direct dependencies"); } }
catch (MojoExecutionException e) { log.error("remove-extension failed: {}", e.getMessage(), e); }

When it happens

Trigger: Running `mvn quarkus:remove-extension -Dextensions=<list>` where ext names do not match installed extensions, or RemoveExtensions.execute() fails to modify the pom (e.g. the project has no Quarkus platform/BOM configured, or the extension is brought in transitively and cannot be removed directly).

Common situations: Typo in the extension artifactId; trying to remove an extension pulled in transitively by another dependency; removing the last platform dependency; running the goal in a project without a quarkus-maven-plugin-compatible pom setup.

Related errors

• Unable to parse pom file: ${pom}
• Could not resolve POM for
• Unable to add extensions
• Failed to initialize Maven artifact resolver
• You are trying to create a Maven project in a directory that

AI-assisted analysis of quarkusio/quarkus@e1c734241f (2026-09-05). Data as JSON: /api/errors/c69ee42aa5cad203. Report an issue: GitHub.