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https://issues.apache.org/jira/browse/GROOVY-9165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16860103#comment-16860103
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Paul King commented on GROOVY-9165:
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Wrt classpath order, see GROOVY-4810. To date, no one has found time to work
through all the implications. We'd also need to see whether the split package
requirement from JDK9+ complicates things further. Possibly not but we'd need
to check.
Wrt picocli jar in Groovy install, yes I was suggesting that we remove it from
being bundled in the distribution - it's only a @Grab away after all (or an
extra dependency in a build file). We have had commons cli jar removed from
zips at one point for just that reason - but subsequent changes must have added
it back in.
> Grape cannot pull in picocli
> ----------------------------
>
> Key: GROOVY-9165
> URL: https://issues.apache.org/jira/browse/GROOVY-9165
> Project: Groovy
> Issue Type: Improvement
> Components: Grape, groovy-runtime
> Affects Versions: 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.5.6, 2.5.7
> Reporter: Remko Popma
> Priority: Major
>
> If I try to run a Groovy script I am unable to pull in a newer version of
> picocli via {{@Grab}}:
> {code:groovy}
> @Grab('info.picocli:picocli-groovy:4.0.0-beta-1b')
> @GrabExclude('org.codehaus.groovy:groovy-all')
> @picocli.groovy.PicocliScript
> @picocli.CommandLine.Command
> import picocli.CommandLine
> println "Groovy version ${GroovySystem.version}"
> println "Picocli version $CommandLine.VERSION"
> {code}
> Depending on the Groovy version, this prints
> {code}
> Groovy version 2.5.0
> Picocli version 3.0.2
> {code}
> or
> {code}
> Groovy version 2.5.7
> Picocli version 3.9.5
> {code}
> So the {{@Grab('info.picocli:picocli-groovy:4.0.0-beta-1b')}} is not honoured.
> This is because the {{groovy.ui.GroovyMain}} class, which executes Groovy
> scripts, itself uses picocli to parse the command line parameters.
> Unfortunately, this means that Groovy script authors cannot control the
> picocli version used by their scripts.
> Is there anything we can do to improve this?
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