I have been converting a simple Grails 6 app to Grails 7, and I'm getting there, but I keep getting a 'unable to resolve class org.apache.commons.lang.time.DateUtils' error, and others also from the commons.lang package. In Grails 6 and earlier one didn't need to declare a dependency for this, it was built in. It tried declaring a dependency with: implementation 'org.apache.commonscommons lang33.13.0' but that didn't help. Also are groovy-dateutil and groovy-datetime part of core now?

Try using

implementation 'org.apache.commons:commons-lang3:3.18.0'

and

org.apache.commons.lang3.time.DateUtils

https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/time/DateUtils.html

Thanks, that got me past that, changing the class references to 'lang3'. Now compiling! I will be testing it out soon.

fyi we intentionally removed lang due to its size

is lang needed or this would work too? https://mvnrepository.com/artifact/org.apache.groovy/groovy-dateutil

It's up to you - the reason we've been removing it is because of it's size

but I'm wondering if lang and groovy-dateutil are linked of if the groovy dep alone might provide the same functionality without the need of the big lang dep