Builder not found

[delanym]

When I run

mvn clean install -T2 -b smart

I get this error

The builder requested using id = smart cannot be found

Apache Maven 3.6.3
Maven home: /usr/share/maven
Java version: 1.8.0_275, vendor: Private Build, runtime: /usr/lib/jvm/java-8-openjdk-amd64/jre
Default locale: en_ZA, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-58-generic", arch: "amd64", family: "unix"

/etc/maven/lib/ext
├── synchronized-resolver-3.2.5.jar
├── takari-filemanager-0.8.3.jar
├── takari-local-repository-0.11.3.jar
└── takari-smart-builder-0.6.1.jar

[delanym]

I also don't see a timing file created in ${maven.multiModuleProjectDirectory}/.mvn/
How do I verify that the extension was invoked? I don't see any documentation on configuring this other than http://takari.io/book/30-team-maven.html#using-team

[mlosicki]

I also tried executing this extension and creating an extensions.xml file in the .mvn directory that you mentioned worked out of the box for me.

<extensions xmlns="http://maven.apache.org/EXTENSIONS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://maven.apache.org/EXTENSIONS/1.0.0 http://maven.apache.org/xsd/core-extensions-1.0.0.xsd">
    <extension>
        <groupId>io.takari.maven</groupId>
        <artifactId>takari-smart-builder</artifactId>
        <version>0.6.1</version>
    </extension>
</extensions>

If you execute with -X, you should see those jars mentioned right at the start of the build.
The timing.properties file was removed in 3f813eb

[delanym]

I can include any JAR in the classpath - it doesn't mean the routines are necessarily active in my build.
When I run multi-thread build the log indicates this with "Using the MultiThreadedBuilder implementation with a thread count of 3"
When I run other extensions they indicate their activation (not other Takari extensions though)

[INFO] BuildTimeEventSpy is registered.
[WARNING] SystemTray is not supported, skipping notifications...
[INFO] Scanning for projects...
[INFO] gitflow-incremental-builder 3.12.1 starting...

The reason I'm suspicious of this extension is the lack of interest in it, it has no configurable parameters, it doesn't register with the builder interface switch '--builder' which the documentation instructs me to use, and its replacing default Maven functionality. How do I know that its playing nicely with the above MultiThreadedBuilder and gitflow-incremental-builder?

I compared the reactor order of projects with and without the extension, and they are identical. In a reactor of over 500 projects I expect at least something to change when critical path scheduling is applied.

[cstamas]

I cannot reproduce this when smart-builder installed according to documentation in README:
https://github.com/takari/takari-smart-builder/blob/master/README.md