polyglot fails with latest maven 4.0.0-alpha versions

[McFoggy]

using a simple sample project

pom.yaml

modelVersion: 4.0.0
groupId: fr.brouillard.oss.maven.sample
artifactId: yaml-project
version: 0.0.1-SNAPSHOT
name: 'Sample using YAML POM'

extensions.xml

<?xml version="1.0" encoding="UTF-8"?>

<!--
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements. See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership. The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License. You may obtain a copy of the License at
  http://www.apache.org/licenses/LICENSE-2.0
  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied. See the License for the
  specific language governing permissions and limitations
  under the License.
-->

<extensions>
  <extension>
    <groupId>io.takari.polyglot</groupId>
    <artifactId>polyglot-yaml</artifactId>
    <version>0.4.6</version>
  </extension>
</extensions>

On latest maven versions Apache Maven 4.0.0-alpha-1-SNAPSHOT (2caed6218a5ec0a0b7fce2975743331e5ec76c89) the build fails with Internal error: java.lang.RuntimeException: Unable to determine model input format; options={transformerContext=org.apache.maven.model.building.DefaultModelBuilder$DefaultTransformerContextBuilder$1@70cccd8f}

full stack trace

[INFO] Scanning for projects...
[ERROR] Internal error: java.lang.RuntimeException: Unable to determine model input format; options={transformerContext=org.apache.maven.model.building.DefaultModelBuilder$DefaultTransformerContextBuilder$1@70cccd8f} -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: Unable to determine model input format; options={transformerContext=org.apache.maven.model.building.DefaultModelBuilder$DefaultTransformerContextBuilder$1@70cccd8f}
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:134)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:982)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:296)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:200)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.RuntimeException: Unable to determine model input format; options={transformerContext=org.apache.maven.model.building.DefaultModelBuilder$DefaultTransformerContextBuilder$1@70cccd8f}
    at org.sonatype.maven.polyglot.PolyglotModelManager.getReaderFor (PolyglotModelManager.java:65)
    at org.sonatype.maven.polyglot.TeslaModelProcessor.read (TeslaModelProcessor.java:147)
    at org.sonatype.maven.polyglot.TeslaModelProcessor.read (TeslaModelProcessor.java:91)
    at org.apache.maven.model.building.DefaultModelBuilder.readRawModel (DefaultModelBuilder.java:743)
    at org.apache.maven.model.building.DefaultModelBuilder.readEffectiveModel (DefaultModelBuilder.java:364)
    at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:506)
    at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:494)
    at org.apache.maven.project.DefaultProjectBuilder.build (DefaultProjectBuilder.java:619)
    at org.apache.maven.project.DefaultProjectBuilder.build (DefaultProjectBuilder.java:401)
    at org.sonatype.maven.polyglot.TeslaProjectBuilder.build (TeslaProjectBuilder.java:43)
    at org.apache.maven.project.collector.DefaultProjectsSelector.selectProjects (DefaultProjectsSelector.java:63)
    at org.apache.maven.project.collector.MultiModuleCollectionStrategy.collectProjects (MultiModuleCollectionStrategy.java:71)
    at org.apache.maven.graph.DefaultGraphBuilder.getProjectsForMavenReactor (DefaultGraphBuilder.java:426)
    at org.apache.maven.graph.DefaultGraphBuilder.build (DefaultGraphBuilder.java:97)
    at org.apache.maven.DefaultMaven.buildGraph (DefaultMaven.java:559)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:233)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:206)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:119)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:982)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:296)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:200)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException

Looking quickly at the code in PolyglotModelManager it looks like the injection of mappings did not worked as expected.

[mosabua]

I am not surprised to be honest.. we will have to try to update the internal Maven used in polyglot closer to 3.6.3 first .. also have to upgrade to Java 11 .. which is hard due to inactive jruby related projects and such. Not sure when or if we will find time for that work. Pull requests are welcome of course..

[laeubi]

which is hard due to inactive jruby related projects

Shouldn't "older" J8 still work with J11 code? If not I think it is acceptable to drop ruby support as long as there are no new releases.

[laeubi]

Is there any progress here? Any help needed? Is java 8 still a concern?