Using external project properties from an external build script

Help/Discuss
1

I have created a custom build script where I am setting certain project properties and then applying the build script into my primary build.gradle.

However, the properties are not available to me and I get the following exception :

cannot get property ‘XXXX’ on extra properties extension as it does not exist

Following is my test build.gradle

buildscript {
    apply from : 'custom-build-script.gradle'
} 
println "my property"+project.ext.XXXX

My custom-build-script.gradle looks like -

task config {
     doFirst {
          project.ext.set(XXXX,<value>)
     }
}

I am not sure if my expectation is correct or if I am missing something here. Could anyone please provide me some pointers to resolve this.

Appreciate your help.
Thanks.

2

The code inside doFirst defines an action that only runs if the config task is built.

If custom-build-script.gradle is just this one line, then it works:

project.ext.set('XXXX', 'foo')
3

Thanks Andrew.

There was a build script section as well in the custom-build-script.gradle.
I am not exactly sure of the concept here, but someone else suggested me to make the setting of the project properties inside a build-script section. I tried doing that and in my primary build.gradle, now I am able to see the project properties.

My primary build.gradle -

buildscript {
    apply from : 'custom-build-script.gradle'
} 
println "my property"+project.ext.XXXX

My custom-build-script.gradle now looks like -

buildscript {
     repositories { //maven related info }
     dependencies { //defined my dependencies }
     properites.each { prop ->
          project.ext.set(prop.key,prop.value)
     }
}