Just tried, and got the same error. Here is the full error log in case it helps:

[DEBUG] Looking up lifecyle mappings for packaging jar from ClassRealm[plexus.core, parent: null]
[ERROR] The build could not read 1 project -> [Help 1]
org.apache.maven.project.ProjectBuildingException: Some problems were encountered while processing the POMs:
[ERROR] Unresolveable build extension: Plugin de.lightful.maven.plugins:maven-drools-plugin:0.2.11 or one of its dependencies could not be resolved: Failed to collect dependencies for de.lightful.maven.plugins:maven-drools-plugin:jar:0.2.11 () @

    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:363)
    at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:636)
    at org.apache.maven.DefaultMaven.getProjectsForMavenReactor(DefaultMaven.java:585)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:234)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
[ERROR]  
[ERROR]   The project activehealth.careengin:eventprocessing:1.0.1-SNAPSHOT (/home/XSu/workspace/trunk/dev/java/eventprocessing/pom.xml) has 1 error
[ERROR]     Unresolveable build extension: Plugin de.lightful.maven.plugins:maven-drools-plugin:0.2.11 or one of its dependencies could not be resolved: Failed to collect dependencies for de.lightful.maven.plugins:maven-drools-plugin:jar:0.2.11 (): No versions available for org.easytesting:fest-assert:jar:[1.4, 2.0) within specified range -> [Help 2]
org.apache.maven.plugin.PluginResolutionException: Plugin de.lightful.maven.plugins:maven-drools-plugin:0.2.11 or one of its dependencies could not be resolved: Failed to collect dependencies for de.lightful.maven.plugins:maven-drools-plugin:jar:0.2.11 ()
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:211)
    at org.apache.maven.project.DefaultProjectBuildingHelper.resolveExtensionArtifacts(DefaultProjectBuildingHelper.java:377)
    at org.apache.maven.project.DefaultProjectBuildingHelper.createProjectRealm(DefaultProjectBuildingHelper.java:237)
    at org.apache.maven.project.DefaultModelBuildingListener.buildExtensionsAssembled(DefaultModelBuildingListener.java:106)
    at org.apache.maven.model.building.ModelBuildingEventCatapult$1.fire(ModelBuildingEventCatapult.java:43)
    at org.apache.maven.model.building.DefaultModelBuilder.fireEvent(DefaultModelBuilder.java:1053)
    at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:388)
    at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:371)
    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:560)
    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:352)
    at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:636)
    at org.apache.maven.DefaultMaven.getProjectsForMavenReactor(DefaultMaven.java:585)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:234)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.sonatype.aether.collection.DependencyCollectionException: Failed to collect dependencies for de.lightful.maven.plugins:maven-drools-plugin:jar:0.2.11 ()
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:258)
    at org.sonatype.aether.impl.internal.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:308)
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:199)
    ... 24 more
Caused by: org.sonatype.aether.resolution.VersionRangeResolutionException: No versions available for org.easytesting:fest-assert:jar:[1.4, 2.0) within specified range
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.process(DefaultDependencyCollector.java:376)
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.process(DefaultDependencyCollector.java:544)
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:240)
    ... 26 more

On Fri, Apr 13, 2012 at 6:09 PM, Ansgar Konermann <ansgar.konermann@googlemail.com> wrote:

Hi Sean,

thanks for giving it a try. Release 0.2.4 is horribly old. Latest release is 0.2.11. Could you retry with 0.2.11 and let me know how that works out?

Best regards,

Ansgar

Am 14.04.2012 00:04 schrieb "Sean Su" <sean.x.su@gmail.com>:

Ansgar,

I am able to connect to the repository and start to download the dependencies. However it failed with this error. Any idea?

Caused by: org.sonatype.aether.resolution.VersionRangeResolutionException: No versions available for org.easytesting:fest-assert:jar:[1.4, 2.0) within specified range
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.process(DefaultDependencyCollector.java:376)
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.process(DefaultDependencyCollector.java:544)
    at org.sonatype.aether.impl.internal.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:240)
    ... 26 more


I am pointing to http://lightful.de/mvnrepo/public/releases/ with plugin version 0.2.4.

Thanks

Sean

On Fri, Apr 6, 2012 at 9:35 AM, Sean Su <sean.x.su@gmail.com> wrote:
Ansgar, I tried the plugin yesterday before sending the email to the list but did not succeed. The problem, I believe, is the repository specification inside my pom. Could you send it over so that I can be sure?

Thanks

Sean


On Fri, Apr 6, 2012 at 2:32 AM, Geoffrey De Smet <ge0ffrey.spam@gmail.com> wrote:
Hey Ansgar,

Your plugin is by far the best maven plugin for drools out there. Nice work.

Would you be interested in moving the code into
  https://github.com/droolsjbpm/droolsjbpm-tools
next to drools-ant?

Advantages:
- It would be released together with the rest of the drools, using the latest drools version
- It would be automatically synced to maven central
- It would get more exposure, as it will be documented in our documentation
- Others (including us) will start improving it too

Disadvantages:
- At first, you 'd have to fork it and create pull requests to get your changes back into blessed (but I can guarantee I 'll merge any non-conflicting pull requests frequently and won't let them go stale)
- We 'd need at least a few lines of documentation in:
  https://github.com/droolsjbpm/drools/tree/master/drools-docs/drools-expert-docs

We can worry about the more advanced features (such as aether usage) later, just getting an official maven plugin for drools out there will help a lot of people.

Op 05-04-12 23:01, Ansgar Konermann schreef:


Am 05.04.2012 21:48 schrieb "Sean Su" <sean.x.su@gmail.com>:


>
> Hello, guys,
>
> I did some search online and it seems we do not have any official plugin that allows us to compile Drools rules as part of the maven build.

There is already a jira issue for it: https://issues.jboss.org/browse/JBRULES-1273

Result so far: http://passion.forco.de/content/maven-drools-plugin

Feel free to try it and let me know if you miss anything.

Best regards,

Ansgar



>
> Is this the case or I have not found it yet?
>
> Thanks for the help.
>
> Sean
>
> --
> "But beware of the Dark Side. Anger, fear, aggression - the Dark Side of the Force are they." -Yoda
>
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With kind regards,
Geoffrey De Smet

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--
"But beware of the Dark Side. Anger, fear, aggression - the Dark Side of the Force are they." -Yoda

_______________________________________________
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--
"But beware of the Dark Side. Anger, fear, aggression - the Dark Side of the Force are they." -Yoda