jruby / mavengem

Mavengem protocol and mavengem wagon

mavengem

this project consists of two modules. one is converting a rubygems repository into maven repository. this happens either via registered the protocol handler in JVM or by using a special MavenGemURLConnection which turns a rubygems repository on the fly to maven repository.

the second module uses this to add a transport extension to maven allowing to use gems from a rubygems repository as gem artifacts inside a POM. see also http://maven.apache.org/wagon/.

License

As the wagon code was more or less stolen from EPL licensed code https://github.com/apache/maven-wagon/blob/master/wagon-providers/wagon-http-lightweight/src/main/java/org/apache/maven/wagon/providers/http/LightweightHttpWagon.java this code is under the same license: EPL

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

meta-fu

enjoy :)

mavengem's Issues

RubyGems.org v1 dependency API deprecation

We learned recently that the v1 version of the dependency-lookup API on RubyGems.org was deprecated on February 23, slated for complete removal on (at time of writing) May 10.

This API is used by the mavengem plugin to fetch a list of dependencies for gem artifacts, and is critical to this plugin. When the API goes away–if we are unable to update, test, and release a new version of mavengems–JRuby's build and any downstream builds that fetch Ruby gems as Maven dependencies will cease to function.

I have joined an issue here, basically begging for more time to make this transition: rubygems/rubygems.org#3698 (comment)

This came to our attention, finally, due to the intermittent "brown outs" that RubyGems.org has deployed in the last month. That led to a revival of this jruby-maven-plugins issue: jruby/jruby-maven-plugins#124 (comment)

Had we noticed the original deprecation blog post two months ago we might have had time to make this transition. Now, with only 8 days left and a major Ruby conference coming up (RubyKaigi on the 11th), I don't see how we can fix this before the API shuts down altogether.

I am begging the RubyGems.org maintainers for additional time to make this transition. Meanwhile we need to move quickly to try to fix our uses of the deprecated API (and make sure we're not using any others).

mavengem failing on Java 9+

could use a newer release with a JRuby upgrade
for now, still seems to be stucked with JRuby 1.7 which has issues on Java 11 (any Java >= 9)

using jruby-openssl ~ 0.9.5 - assumed the default key store type to be JKS, but it started returning PKCS12 on Java 9, thus we always fail on require 'openssl' :

org.jruby.exceptions.RaiseException: (OpenSSL::X509::StoreError) setting default path failed: No password supplied for PKCS#12 KeyStore

caused by :

java.lang.NullPointerException: No password supplied for PKCS#12 KeyStore.
	at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.engineLoad(Unknown Source)
	at java.base/java.security.KeyStore.load(KeyStore.java:1479)
	at org.jruby.ext.openssl.x509store.Lookup.loadDefaultJavaCACertsFile(Lookup.java:279)
	at org.jruby.ext.openssl.x509store.Lookup$ByFile.call(Lookup.java:428)
	at org.jruby.ext.openssl.x509store.Lookup$ByFile.call(Lookup.java:411)
	at org.jruby.ext.openssl.x509store.Lookup.control(Lookup.java:123)
	at org.jruby.ext.openssl.x509store.Lookup.loadFile(Lookup.java:92)
	at org.jruby.ext.openssl.x509store.Store.setDefaultPaths(Store.java:336)
	at org.jruby.ext.openssl.X509Store.set_default_paths(X509Store.java:161)
	at org.jruby.ext.openssl.X509Store$INVOKER$i$0$0$set_default_paths.call(X509Store$INVOKER$i$0$0$set_default_paths.gen)

Full Maven Log

[DEBUG] =======================================================================
[DEBUG] Skipped remote request for rubygems:jar-dependencies/maven-metadata.xml, locally cached metadata up-to-date.
[DEBUG] Using transporter WagonTransporter with priority -1.0 for mavengem:https://rubygems.org
[DEBUG] Using connector BasicRepositoryConnector with priority 0.0 for mavengem:https://rubygems.org
Downloading from mavengems: mavengem:https://rubygems.org/rubygems/jar-dependencies/maven-metadata.xml
OpenSSL::X509::StoreError: setting default path failed: No password supplied for PKCS#12 KeyStore.
  set_default_paths at org/jruby/ext/openssl/X509Store.java:165
         SSLContext at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:31
                SSL at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:22
            OpenSSL at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:21
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:20
               load at org/jruby/RubyKernel.java:1087
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/openssl/ssl-internal.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/openssl/ssl-internal.rb:4
               load at org/jruby/RubyKernel.java:1087
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl.rb:21
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl/load.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl/load.rb:24
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/openssl.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/openssl.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/security.rb:1
            require at org/jruby/RubyKernel.java:1071
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
            require at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:53
             (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/shared/rubygems/security.rb:11
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.884 s
[INFO] Finished at: 2020-02-04T11:05:02+01:00
[INFO] ------------------------------------------------------------------------
---------------------------------------------------
constituent[0]: file:/opt/maven/conf/logging/
constituent[1]: file:/opt/maven/lib/wagon-provider-api-3.1.0.jar
constituent[2]: file:/opt/maven/lib/javax.inject-1.jar
constituent[3]: file:/opt/maven/lib/cdi-api-1.0.jar
constituent[4]: file:/opt/maven/lib/plexus-interpolation-1.24.jar
constituent[5]: file:/opt/maven/lib/guice-4.2.0-no_aop.jar
constituent[6]: file:/opt/maven/lib/org.eclipse.sisu.inject-0.3.3.jar
constituent[7]: file:/opt/maven/lib/maven-resolver-transport-wagon-1.1.1.jar
constituent[8]: file:/opt/maven/lib/maven-slf4j-provider-3.5.4.jar
constituent[9]: file:/opt/maven/lib/plexus-component-annotations-1.7.1.jar
constituent[10]: file:/opt/maven/lib/maven-compat-3.5.4.jar
constituent[11]: file:/opt/maven/lib/guava-20.0.jar
constituent[12]: file:/opt/maven/lib/jsr250-api-1.0.jar
constituent[13]: file:/opt/maven/lib/commons-lang3-3.5.jar
constituent[14]: file:/opt/maven/lib/plexus-utils-3.1.0.jar
constituent[15]: file:/opt/maven/lib/wagon-http-3.1.0-shaded.jar
constituent[16]: file:/opt/maven/lib/maven-repository-metadata-3.5.4.jar
constituent[17]: file:/opt/maven/lib/maven-builder-support-3.5.4.jar
constituent[18]: file:/opt/maven/lib/maven-model-3.5.4.jar
constituent[19]: file:/opt/maven/lib/maven-resolver-spi-1.1.1.jar
constituent[20]: file:/opt/maven/lib/maven-embedder-3.5.4.jar
constituent[21]: file:/opt/maven/lib/maven-shared-utils-3.2.1.jar
constituent[22]: file:/opt/maven/lib/aopalliance-1.0.jar
constituent[23]: file:/opt/maven/lib/maven-core-3.5.4.jar
constituent[24]: file:/opt/maven/lib/maven-settings-builder-3.5.4.jar
constituent[25]: file:/opt/maven/lib/maven-plugin-api-3.5.4.jar
constituent[26]: file:/opt/maven/lib/plexus-sec-dispatcher-1.4.jar
constituent[27]: file:/opt/maven/lib/maven-resolver-impl-1.1.1.jar
constituent[28]: file:/opt/maven/lib/maven-artifact-3.5.4.jar
constituent[29]: file:/opt/maven/lib/plexus-cipher-1.7.jar
constituent[30]: file:/opt/maven/lib/wagon-file-3.1.0.jar
constituent[31]: file:/opt/maven/lib/maven-resolver-util-1.1.1.jar
constituent[32]: file:/opt/maven/lib/jcl-over-slf4j-1.7.25.jar
constituent[33]: file:/opt/maven/lib/maven-settings-3.5.4.jar
constituent[34]: file:/opt/maven/lib/maven-model-builder-3.5.4.jar
constituent[35]: file:/opt/maven/lib/slf4j-api-1.7.25.jar
constituent[36]: file:/opt/maven/lib/commons-cli-1.4.jar
constituent[37]: file:/opt/maven/lib/maven-resolver-provider-3.5.4.jar
constituent[38]: file:/opt/maven/lib/maven-resolver-api-1.1.1.jar
constituent[39]: file:/opt/maven/lib/org.eclipse.sisu.plexus-0.3.3.jar
constituent[40]: file:/opt/maven/lib/commons-io-2.5.jar
constituent[41]: file:/opt/maven/lib/jansi-1.17.1.jar
constituent[42]: file:/opt/maven/lib/maven-resolver-connector-basic-1.1.1.jar
---------------------------------------------------
Exception in thread "main" java.lang.ExceptionInInitializerError
	at org.torquebox.mojo.mavengem.RubygemsFactory.getOrCreate(RubygemsFactory.java:116)
	at org.torquebox.mojo.mavengem.MavenGemURLConnection.connect(MavenGemURLConnection.java:103)
	at org.torquebox.mojo.mavengem.MavenGemURLConnection.getInputStream(MavenGemURLConnection.java:83)
	at org.torquebox.mojo.mavengem.wagon.MavenGemWagon.fillInputData(MavenGemWagon.java:51)
	at org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:126)
	at org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
	at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
	at org.eclipse.aether.transport.wagon.WagonTransporter$GetTaskRunner.run(WagonTransporter.java:567)
	at org.eclipse.aether.transport.wagon.WagonTransporter.execute(WagonTransporter.java:435)
	at org.eclipse.aether.transport.wagon.WagonTransporter.get(WagonTransporter.java:412)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:453)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:360)
	at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:583)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:232)
	at org.eclipse.aether.internal.impl.DefaultMetadataResolver$ResolveTask.run(DefaultMetadataResolver.java:593)
	at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
	at org.eclipse.aether.internal.impl.DefaultMetadataResolver$1.execute(DefaultMetadataResolver.java:513)
	at org.eclipse.aether.internal.impl.DefaultMetadataResolver.resolve(DefaultMetadataResolver.java:368)
	at org.eclipse.aether.internal.impl.DefaultMetadataResolver.resolveMetadata(DefaultMetadataResolver.java:191)
	at org.apache.maven.repository.internal.DefaultVersionRangeResolver.getVersions(DefaultVersionRangeResolver.java:218)
	at org.apache.maven.repository.internal.DefaultVersionRangeResolver.resolveVersionRange(DefaultVersionRangeResolver.java:168)
	at org.eclipse.aether.internal.impl.DefaultDependencyCollector.cachedResolveRangeResult(DefaultDependencyCollector.java:619)
	at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:394)
	at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:365)
	at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:353)
	at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:256)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:282)
	at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:169)
	at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:243)
	at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:147)
	at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:246)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:200)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:954)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.jruby.embed.EvalFailedException: (OpenSSL::X509::StoreError) setting default path failed: No password supplied for PKCS#12 KeyStore.
	at org.jruby.embed.internal.EmbedEvalUnitImpl.run(EmbedEvalUnitImpl.java:133)
	at org.jruby.embed.ScriptingContainer.runUnit(ScriptingContainer.java:1340)
	at org.jruby.embed.ScriptingContainer.runScriptlet(ScriptingContainer.java:1333)
	at org.sonatype.nexus.ruby.DefaultRubygemsGateway.<init>(DefaultRubygemsGateway.java:43)
	at org.torquebox.mojo.mavengem.Rubygems.<clinit>(Rubygems.java:27)
	... 53 more
Caused by: org.jruby.exceptions.RaiseException: (OpenSSL::X509::StoreError) setting default path failed: No password supplied for PKCS#12 KeyStore.
	at org.jruby.ext.openssl.X509Store.set_default_paths(org/jruby/ext/openssl/X509Store.java:165)
	at RUBY.SSLContext(uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:31)
	at RUBY.SSL(uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:22)
	at RUBY.OpenSSL(uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:21)
	at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/shared/jopenssl19/openssl/ssl-internal.rb:20)
	at org.jruby.RubyKernel.load(org/jruby/RubyKernel.java:1087)

there was a discussion that loading OpenSSL really would not be needed in this case and there's an open unpolished experiment: #2 ... with JRuby 9.2.9.0 could maybe just force -Djruby.cli.rubygems.enable=false ?

either way a newer JRuby release might be necessary to properly run on newer Java ...

License clarification

I'm currently working on packaging this for Debian, and one of the tasks is to check the licensing of the code.

The README states that the "wagon code" was picked up from here but it seems that file is currently, and has always been, licensed under the Apache-2.0 license, while this project is licensed with the EPL-1.0.

The picture I have currently is this: https://salsa.debian.org/java-team/jruby-mavengem/-/blob/master/debian/copyright

Thanks!

relocation

you should publish an old artifact (org.torquebox.mojo) with relocation information

The new location is

        <extensions>
            <extension> <!-- this allows us to download gems -->
                <groupId>org.jruby.maven</groupId>
                <artifactId>mavengem-wagon</artifactId>
                <version>2.0.2</version>
            </extension>
        </extensions>

Transitive prerelease dependencies get -SNAPSHOT suffix

Prerelease gems can be specified in maven dependencies using mavengem, but it appears that transitive prerelease dependencies try to resolve with a -SNAPSHOT suffix.

From JRuby while working on jruby/jruby#8221

[ERROR] Failed to execute goal on project jruby-stdlib: Could not resolve dependencies for project org.jruby:jruby-stdlib:jar:9.4.8.0-SNAPSHOT: Failed to collect dependencies at rubygems:subspawn:gem:0.2.0.pre1 -> rubygems:subspawn-common:gem:[0.2.0.pre1-SNAPSHOT,0.2.99999]: No versions available for rubygems:subspawn-common:gem:[0.2.0.pre1-SNAPSHOT,0.2.99999] within specified range -> [Help 1]

In this example, the subspawn 0.2.0.pre1 gem depends on subspawn-common 0.2.0.pre1, but mavengem tries to resolve the latter with a -SNAPSHOT suffix that does not exist.

can not run pom.rb build on Java 11

very likely due having old jruby-openssl (jruby): jruby/jruby-openssl#142

Caused by: org.jruby.embed.EvalFailedException: (LoadError) load error: jopenssl/load -- java.lang.StringIndexOutOfBoundsException: begin 0, end 3, length 2
	at org.jruby.embed.internal.EmbedEvalUnitImpl.run(EmbedEvalUnitImpl.java:131)
	at org.jruby.embed.ScriptingContainer.runUnit(ScriptingContainer.java:1307)
	at org.jruby.embed.ScriptingContainer.runScriptlet(ScriptingContainer.java:1300)
	at org.torquebox.mojo.rubygems.DefaultRubygemsGateway.<init>(DefaultRubygemsGateway.java:36)
	at org.torquebox.mojo.mavengem.Rubygems.<clinit>(Rubygems.java:27)
	... 53 more
Caused by: org.jruby.exceptions.RaiseException: (LoadError) load error: jopenssl/load -- java.lang.StringIndexOutOfBoundsException: begin 0, end 3, length 2
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:955)
	at uri_3a_classloader_3a_.META_minus_INF.jruby_dot_home.lib.ruby.stdlib.rubygems.core_ext.kernel_require.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55)
	at RUBY.<main>(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/openssl.rb:1)
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:955)
	at uri_3a_classloader_3a_.META_minus_INF.jruby_dot_home.lib.ruby.stdlib.rubygems.core_ext.kernel_require.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55)
	at RUBY.<main>(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/security.rb:1)
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:955)
	at uri_3a_classloader_3a_.META_minus_INF.jruby_dot_home.lib.ruby.stdlib.rubygems.core_ext.kernel_require.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55)
	at RUBY.<main>(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/security.rb:12)
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:955)
	at uri_3a_classloader_3a_.META_minus_INF.jruby_dot_home.lib.ruby.stdlib.rubygems.core_ext.kernel_require.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55)
	at RUBY.<main>(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/package.rb:1)
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:955)
	at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/package.rb:44)
        at RUBY.<main>(uri:classloader:/nexus/gemspec_helper_impl.rb:1)

for whatever reason I am getting it on 9.1.17.0 as well but only as I run rmvn (mvn seems fine)

same issue as jruby/jruby-maven-plugins#91 but I felt its in the wrong place

there's also the unsupported Java version warning, likely coming from maven itself.

[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building JRuby Lib Setup 9.2.1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: mavengem:https://rubygems.org/rubygems/jar-dependencies/0.4.0/jar-dependencies-0.4.0.pom
unsupported Java version "11", defaulting to 1.7

full-trace at https://gist.github.com/kares/14c75cd6642016b787337440cd9fb1ad

... guess we'll need to update ruby-maven-libs with newer JRuby and Maven itself?