I have gotten to this point during the RPM build process:

[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] org.apache.maven.shared.io.location.ArtifactLocatorStrategy.<init>(Lorg/apache/maven/artifact/factory/ArtifactFactory;Lorg/apache/maven/artifact/resolver/ArtifactResolver;Lorg/apache/maven/artifact/repository/ArtifactRepository;Ljava/util/List;Ljava/lang/String;Ljava/lang/String;)V
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NoSuchMethodError: org.apache.maven.shared.io.location.ArtifactLocatorStrategy.<init>(Lorg/apache/maven/artifact/factory/ArtifactFactory;Lorg/apache/maven/artifact/resolver/ArtifactResolver;Lorg/apache/maven/artifact/repository/ArtifactRepository;Ljava/util/List;Ljava/lang/String;Ljava/lang/String;)V
    at org.apache.maven.plugin.assembly.io.DefaultAssemblyReader.readAssemblies(DefaultAssemblyReader.java:102)
    at org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:296)
    at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
    at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
    at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
    at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 minute 47 seconds
[INFO] Finished at: Fri Mar 09 12:50:16 CET 2012
[INFO] Final Memory: 237M/834M
[INFO] ------------------------------------------------------------------------
make: *** [build_mvn] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.95OcZi (%install)


RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.95OcZi (%install)



Chris Brown had a similar issue.
http://www.mail-archive.com/users@ovirt.org/msg00078.html
His solution was to run maven 2.2. But the problem is that I do.

[elab@virtual SPECS]$ mvn -v
/usr/lib/jvm/java
Apache Maven 2.2.1 (rNON-CANONICAL_2011-10-17_20-32_mockbuild; 2011-10-17 21:32:08+0200)
Java version: 1.6.0_22
Java home: /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-220.7.1.el6.x86_64" arch: "amd64" Family: "unix"

Any ideas now?

2012/3/9 Elias Abacioglu <elias.rabi@gmail.com>

>
> Trey, did you have a Python 2.7  RPM or SRPM for EL6?

Where do you see the Python 2.7 dependency?  Running a rebuild with no
changes on the latest SPEC gives me this ...
Maybe you are right.. I was just blinded by the fact that the ovirt-engine rpms needed 2.7.. So that is probably not needed after I have rebuilt ovirt rpms.
 
# rpmbuild -ba --define 'dist .el6' --define 'rhel 6' ovirt-engine.spec
<snip>
+ make PREFIX=/builddir/build/BUILDROOT/ovirt-engine-3.0.0_0001-1.6.el6.x86_64/
install
which: no mvn in (/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/builddir/bin)
export MAVEN_OPTS="-XX:MaxPermSize=512m"
install -P gwt-admin,gwt-user -D skipTests
install: WARNING: ignoring --preserve-context; this kernel is not
SELinux-enabled
install: cannot stat `gwt-admin,gwt-user': No such file or directory
make: *** [build_mvn] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.oHg34r (%install)

I think it requires maven 2.2. There is a maven 2.2 in jpackage 6.0. But it got a broken dependency.
I tried compiling with maven 2.0 and that failed.