<dependency>
  <groupId>org.jruby.extras</groupId>
  <artifactId>jnr-constants</artifactId>
  <version>0.8.1</version>
</dependency>

implementation 'org.jruby.extras:jnr-constants:0.8.1'

implementation("org.jruby.extras:jnr-constants:0.8.1")

libraryDependencies += "org.jruby.extras" % "jnr-constants" % "0.8.1"

@Grapes(
  @Grab(group='org.jruby.extras', module='jnr-constants', version='0.8.1')
)

<dependency org="org.jruby.extras" name="jnr-constants" rev="0.8.1" />

[org.jruby.extras/jnr-constants "0.8.1"]

'org.jruby.extras:jnr-constants:jar:0.8.1'