Re: Debian-Java 2025 wishlists
Hi,
Thank you for this opportunity, here is my wishlist, mostly focused on making packaging easier,
especially for people unfamiliar with the Debian packaging system (like me):
1/ Make the Debian version of maven able to locate its own plugins.
Simplest example I could come up with.
- Following packages were installed: maven, maven-debian-helper, maven-repo-helper)
- Pom did not specify the maven-clean-plugin version (so that it would be resolved from the installed maven)
$ MAVEN_OPTS="-Dmaven.repo.local=/usr/share/maven-repo" mvn --offline clean
[INFO] Scanning for projects...
[INFO]
[INFO] --------------------------< org.symly:symly >---------------------------
[INFO] Building Symly 0.11-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] The artifact org.apache.maven.plugins:maven-clean-plugin:jar:2.5 has been relocated to org.apache.maven.plugins:maven-clean-plugin:jar:3.2.0
[INFO]
[INFO] --- maven-clean-plugin:3.2.0:clean (default-clean) @ symly ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.065 s
[INFO] Finished at: 2024-12-18T09:46:09Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:3.2.0:clean (default-clean) on project symly: Execution default-clean of goal org.apache.maven.plugins:maven-clean-plugin:3.2.0:clean failed: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Cannot access central (https://repo.maven.apache.org/maven2) in offline mode and the artifact org.codehaus.plexus:plexus-utils:jar:1.1 has not been downloaded from it before. -> [Help 1]
2/ Add a cookbook on how to create poms that are compatible with both Maven
and Debian best practices as well as a step by step guide for mh_make integration.
The page https://wiki.debian.org/Java/Packaging/Maven is very minimal,
the "mh_make" section contains a deadlink to
http://collab.debian.net/portal/planet-debian/markus-koschany-pdfsam-how-to-upgrade-a-maven-application-for-debian.
The only documentation I was able to find for mh_make is the youtube video.
3/ Provide a more controlled and flexible way of locating a JRE runtime
for java start scripts.
A possible solution would be findjava (I'm the author). I submitted a
request for packaging via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1039109
Emmanuel Bourg started to look at how to package findjava, but stopped
not sure if because of time, interest or blockers. See
https://github.com/loicrouchon/findjava/issues/1
Loïc
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