groovy - Gradle createPom doesn't seem to read gradle.properties -

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please note: although mention shadowjar plugin in question, providing full context. confident gradle guru can answer this, regardless of knowledge level of shadowjar.

currently groovy project built following gradle build invocation:

gradle clean build shadowjar

running invocation produces packaged fat jar under build/libs version property specified in gradle.properties file. instance, if gradle.properties has version=1.2.3, above invocation produces build/libs/myapp-1.2.3.jar.

what doesn't produce, however, valid pom app. , found this answer , modified bit produce:

task createpom << {     pom {         project {             groupid ${group}             artifactid 'myapp'             version ${version}         }     }.writeto("build/libs/pom.xml") }

my thinking group , version (both specified in gradle.properties) "injected", , should produce pom.xml in same directory fat jar.

after adding createpom task, run:

gradle clean build shadowjar createpom

and error:

failure: build failed exception.  * where: build file 'd:\workspace\blah\myapp\build.gradle' line: 89  * went wrong: execution failed task ':createpom'. > no signature of method: java.lang.object.$() applicable argument types: (java.util.collections$emptymap, null) values: [[:], null] possible solutions: any(), is(java.lang.object), wait(), find(), dump(), grep()  * try: run --stacktrace option stack trace. run --info or --debug option more log output.  build failed  total time: 11.673 secs

what going on here?

the lines:

groupid ${group} artifactid 'myapp' version ${version}

are not valid groovy, , should be:

groupid "${group}" artifactid 'myapp' version "${version}"

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