Github user JohannesDaniel commented on the issue:
https://github.com/apache/nifi/pull/2517
@ottobackwards When I try this I always run into the same problem:
[ERROR] Failed to execute goal on project nifi-livy-processors: Could not
resolve dependencies for project
org.apache.nifi:nifi-livy-processors:jar:1.7.0-SNAPSHOT: Could not find
artifact org.apache.nifi:nifi-standard-processors:jar:tests:1.7.0-SNAPSHOT in
apache.snapshots (https://repository.apache.org/snapshots) -> [Help 1]
[ERROR] Failed to execute goal on project nifi-slack-processors: Could not
resolve dependencies for project
org.apache.nifi:nifi-slack-processors:jar:1.7.0-SNAPSHOT: Could not find
artifact org.apache.nifi:nifi-standard-processors:jar:tests:1.7.0-SNAPSHOT in
apache.snapshots (https://repository.apache.org/snapshots) -> [Help 1]
already deleted everything in .m2/repository/org/apache/nifi
reimported / reran buid --> same error message
I never had that with prior versions of nifi
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