Incorrect paths for diffoscope comparison when Maven build not from root directory

[algomaster99]

When a rebuild is executed and there are bit-by-bit differences, the script outputs paths for manually execution diffoscope command.

reproducible-central/content/org/apache/orc/orc-1.8.3.buildcompare

Lines 10 to 16 in 0e16663

	# diffoscope target/reference/org.apache.orc/orc-1.8.3-source-release.zip target/orc-1.8.3-source-release.zip
	# diffoscope target/reference/org.apache.orc/orc-shims-1.8.3-tests.jar shims/target/orc-shims-1.8.3-tests.jar
	# diffoscope target/reference/org.apache.orc/orc-core-1.8.3-tests.jar core/target/orc-core-1.8.3-tests.jar
	# diffoscope target/reference/org.apache.orc/orc-mapreduce-1.8.3-tests.jar mapreduce/target/orc-mapreduce-1.8.3-tests.jar
	# diffoscope target/reference/org.apache.orc/orc-tools-1.8.3-tests.jar tools/target/orc-tools-1.8.3-tests.jar
	# diffoscope target/reference/org.apache.orc/orc-examples-1.8.3-uber.jar examples/target/orc-examples-1.8.3-uber.jar
	# diffoscope target/reference/org.apache.orc/orc-examples-1.8.3-tests.jar examples/target/orc-examples-1.8.3-tests.jar

However, if you cd content/org/apache/orc/buildcache/orc and then run these diffoscope commands, you get file does not exist error.
This happens because the root of this project (or where pom.xml) is at orc/java.
The solution to correction of these comments would be if all of these commands also respect -f java/pom.xml.

[hboutemy]

yes, known limitation: PR welcome, either at https://github.com/apache/maven-artifact-plugin level or reproducible-central's build_diffoscope.sh

[algomaster99]

Thanks! Will give it a try.