When I execute gradle with the following command:
./gradlew publishToMavenLocal -PsplainVersion=null
I got the following error:
...
> Could not resolve all files for configuration ':graph-commons:scalaCompilerPlugins'.
> Could not resolve io.tryp:splain_2.13.6:null.
It appears that null is not parsed properly as a control token, instead it becomes a string. Is there a method to help Gradle to understand it as a real null value?
CodePudding user response:
Gradle will effectively treat anything as an argument of some kind. There is no null checking whatsoever.
So if you need to ensure a null argument is not given to your build script, then you need to validate the argument is not null where it is being used.
tasks.register("verifyNonNull") {
onlyIf {
property("splainVersion") != 'null'
}
}
If you are curious of Gradle's logic, check out the source of CommandLineParser
.