Dependency not resolving in case pom existing but jar missing in repository

[mlthlschr]

I am currently trying to run geotools via jupyter. For that, I add the repository and dependency.

@file:Repository("https://repo.osgeo.org/repository/release/")
@file:DependsOn("org.geotools:gt-main:23.2")

Geotools itself depends on various other libs, which are pulled from the different repositories. There is a problem, however, with one specific dependency: javax.media:jai_core. It is partially available on jcenter.bintray.com, see the ivydata-1.1.3.properties file from the ivy-cache:

#ivy cached data file for javax.media#jai_core;1.1.3
#Sat Sep 26 13:52:50 CEST 2020
artifact\:jai_core\#pom.original\#pom\#-1025053167.is-local=false
artifact\:jai_core\#pom.original\#pom\#-1025053167.original=artifact\:jai_core\#pom.original\#pom\#-1025053167
resolver=jcenter.bintray.com
artifact\:ivy\#ivy\#xml\#-399881196.is-local=false
artifact\:ivy\#ivy\#xml\#-399881196.exists=true
artifact.resolver=jcenter.bintray.com
artifact\:ivy\#ivy\#xml\#-399881196.original=artifact\:jai_core\#pom.original\#pom\#-1025053167
artifact\:ivy\#ivy\#xml\#-399881196.location=https\://jcenter.bintray.com/javax/media/jai_core/1.1.3/jai_core-1.1.3.pom
artifact\:jai_core\#pom.original\#pom\#-1025053167.location=https\://jcenter.bintray.com/javax/media/jai_core/1.1.3/jai_core-1.1.3.pom
artifact\:jai_core\#pom.original\#pom\#-1025053167.exists=true

The problem here is, that jcenter indeed has the .pom on the given location, however it is missing the required.jar. That leads to a not resolved dependency, as the process is stopping here. If the resolver would continue to check the given @file:Repository("https://repo.osgeo.org/repository/release/"), it would also be able to find the required .jar there..

My current workaround is to download the jai_core-1.1.3.jar from the osgeo repository and copy it into ivy2/cache/javax.media/jai_core/jars, but that is not quite the way to do it, if I want to share it with others.

[alshan]

The current workaround is seem to make sure geotoolkit-repo is before Maven Central, so that it resolves before Central which misses the jar.
https://stackoverflow.com/a/26993223/490369

[mlthlschr]

Is there a way to force ivy to check the geotools repo first?

[alshan]

@ileasile It seems natural to have repositories in the order:

1. more "specific", defined in notebook repositories
2. default repositories (JCenter,Maven Central,JitPack)

And this would fix this situation.

[ileasile]

Will merge a PR in a few days - when the new build of Kotlin will be delivered.

[ileasile]

Kernel v. 0.8.2.117 includes fix. It may be installed from one of dev channels