[GROOVY-9404] NoClassDefFoundError: picocli/CommandLine$ParameterException in scripts after update to Groovy 3.0.0

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Information Provided
• Affects Version/s: 3.0.0
• Component/s: command line processing
• Environment: Linux
• Assignee: Unassigned
• Reporter: Dirk Heinrichs
• Created: 17/Feb/20 07:33
• Updated: 15/Aug/22 15:58
• Resolved: 15/Aug/22 15:58

Description

After update from Groovy 2.5.x to 3.0.0, scripts using picocli are failing with the following error:

NoClassDefFoundError: picocli/CommandLine$ParameterException

Here's a small example showing the problem:

import groovy.cli.picocli.CliBuilder

def cli = new CliBuilder(name: 'cliTest.groovy')
cli.h(type: Boolean, longOpt: 'help', usageHelp: true, required: false, 'Show usage information')
cli.c(type: String, longOpt: 'config', required: true, args: 1, 'Path to config file (required)')
def opts = cli.parse(args)
opts || System.exit(1)
if(opts.h) {
  cli.usage()
  System.exit(0)
}

println(opts.c)

Running this with Groovy 2.5.7 works:

% ~/tmp/groovy-2.5.7/bin/groovy ./cliTest.groovy -c data/config_prod.yaml 
data/config_prod.yaml

But with 3.0.0, it does not:

% ~/tmp/groovy-3.0.0/bin/groovy ./cliTest.groovy -c data/config_prod.yaml
Caught: java.lang.NoClassDefFoundError: picocli/CommandLine$ParameterException
java.lang.NoClassDefFoundError: picocli/CommandLine$ParameterException
        at cliTest.run(cliTest.groovy:4)
        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)
Caused by: java.lang.ClassNotFoundException: picocli.CommandLine$ParameterException
        ... 4 more