Is there a sample of how one can use this plugin?

I was trying to figure out what the initial version of the project should be set to. I created a tag called 0.0.0 and added the plugin without any version details. But that failed with the following error.

No signature of method: org.ajoberstar.reckon.gradle.ReckonPlugin$DelayedVersion.trim() is applicable for argument types: () values: []

Here is how I am using the plugin,

plugins {
    id 'org.ajoberstar.grgit' version '2.1.1'
    id 'org.ajoberstar.reckon' version '0.4.0'
}

apply plugin: 'java'

group = 'xxxxxx'
//version = '0.0.0'

reckon {
    normal = scopeFromProp()
    // preRelease = snapshotFromProp()
}


task printVersionDetails() {
    doLast() {
        println 'Project version is set to: ' + project.getVersion()
    }
}

gradle printVersion -Preckon.scope=patch

Can you please tell me how I should use the plugin? I am a little lost and not sure where the version should be defined.

Environment

Gradle 4.6
Build time:   2018-02-28 13:36:36 UTC
Revision:     8fa6ce7945b640e6168488e4417f9bb96e4ab46c
Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          1.8.0_162 (Oracle Corporation 25.162-b12)
OS:           Mac OS X 10.13.3 x86_64

[ajoberstar]

I haven’t implemented support for detecting uncommitted files, but I’ll open an issue for that. That was a feature of gradle-git, so it would be good to have here too.

[ajoberstar]

Yeah, we can close this now if we’ve covered all of your questions.

I’ve only published to JCenter for the last couple years (you may notice that grgit on Maven Central is from 2016). Maven Central has more picky publishing rules, and I didn’t want to deal with them when I broke the gradle-git plugin up. Not ruling out adding them in the future, but for now JCenter is the place to look.