Re: [tycho-dev] Breaking change in 2.7.0?

["Fauth Dirk (XC-ECO/ESM1)" <Dirk.Fauth@xxxxxxxxxxxx>]

Sorry for the confusion, I didn't talk about Tycho when mentioning the latest version. I was talking about the jboss plugin. From the Tycho side the process is fine.

After discussion with the project lead, we decided to drop the usage of the jboss Tycho plugins, as the additional value for creating an index.html file in the p2 repo is not enough for the continuous effort in build maintenance (as you said, the jboss Tycho plugins possibly need to be adjusted for every new Tycho version, the configuration of the plugin needs to be updated for every new consumer release, and so on).

Thanks for the fast replies, I now get the point on public/private API of Maven plugins.

With regards to the integration-test. I am not sure how to provide that. It possibly is related to some local configuration issue. We only have a simple pom-less build and I locally have a toolchains.xml, JAVA_HOME set and multiple Java versions installed. Maybe something interferes that I could not spot. Thought you might have an idea why this warning/info is shown although everything is in place. If that is not the case and it does not have a negative side effect, it is probably not an issue in general.

Mit freundlichen Grüßen / Best regards

 Dirk Fauth

Cross-Domain Computing Solutions, Cross Automotive Platforms - System, Software and Tools Engineering Engineering Software Methods and Tools1 (XC-ECO/ESM1)
Robert Bosch GmbH | Postfach 30 02 20 | 70442 Stuttgart | GERMANY | www.bosch.com
Tel. +49 711 811-57819 | Telefax +49 711 811 | Dirk.Fauth@xxxxxxxxxxxx

Sitz: Stuttgart, Registergericht: Amtsgericht Stuttgart, HRB 14000;
Aufsichtsratsvorsitzender: Prof. Dr. Stefan Asenkerschbaumer; Geschäftsführung: Dr. Stefan Hartung, 
Dr. Christian Fischer, Filiz Albrecht, Dr. Markus Forschner, Dr. Markus Heyn, Rolf Najork

-----Ursprüngliche Nachricht-----
Von: tycho-dev <tycho-dev-bounces@xxxxxxxxxxx> Im Auftrag von Christoph Läubrich
Gesendet: Dienstag, 5. April 2022 08:55
An: tycho-dev@xxxxxxxxxxx
Betreff: Re: [tycho-dev] Breaking change in 2.7.0?

Hi Dirk,

Tycho is a maven-plugin and only uses OSGi internally because of technical reasons.

Especially the "shared" items are hybrid items that get shared via system-packages with maven class realm.

Nerveless Tycho export packages, none of the code is "public" nor "versioned" in a special way beside what is made available as the mojos what are the "public API" of a maven plugin.

Because of that, we always encourage users to add value to Tycho instead of building custom extensions, as there is literally no resources to keep track for any "backward-compatibility" regarding unknown extensions.

The warning just tells you a possible problem in the configuration that previously was not reported and could lead to strange "process exited wiht -1" errors, it might be that the code is still wrong or does not detect all cases, the best would be to provide a integration-test to show the problem so it could be improved/fixed.

 > It always creates quite some work on updating Tycho

It depends on your build structure, I always only update the version and probably use new features, but also regular test SNAPSHOTs so I can discover possible regressions *before* the release.

 > and the latest version is also published in different locations

don't understand this, tycho is and was always published to maven central under the same coordinates, SNAPSHOTS are also published under a stable eclipse-maven-repository URL...

Am 05.04.22 um 08:15 schrieb Fauth Dirk (XC-ECO/ESM1) via tycho-dev:
> Hi,
> 
> Well of course changing internals should not affect the versioning. 
> But looking into the new location, it doesn't seem that this class is 
> internal. At least from the OSGi point of view, the package is 
> exported, and everything that is exported is is public as far  as I 
> understand. Or am I wrong with that assumption? Then I have to rethink 
> my whole understanding of semantic versioning and what is considered 
> public API and private API. 😉
> 
> You are right, contributing a fix would be a third option. I am just not sure if it is worth the effort, as I first need to clarify why this plugin is actually used and if it is even necessary anymore. It always creates quite some work on updating Tycho, and the latest version is also published in different locations, which makes the maintenance quite annoying on the consumer side.
> 
> I will raise my next question on GitHub discussions. Thanks for the pointer. Just one additional question related to 2.7.0. I now get the following warning:
> 
> "Could not find the Toolchain nor JAVA_HOME, trying java from PATH instead"
> 
> But I have a toolchain.xml as well as JAVA_HOME set. And my PATH contains the JAVA_HOME\bin. Which works fine. Why do I see that warning although my system is setup the way it should? Is still anything missing on my side? Or is the check somehow incorrect?
> 
> Mit freundlichen Grüßen / Best regards
> 
>   Dirk Fauth
> 
> Cross-Domain Computing Solutions, Cross Automotive Platforms - System, 
> Software and Tools Engineering Engineering Software Methods and Tools1 
> (XC-ECO/ESM1) Robert Bosch GmbH | Postfach 30 02 20 | 70442 Stuttgart 
> | GERMANY | www.bosch.com Tel. +49 711 811-57819 | Telefax +49 711 811 
> | Dirk.Fauth@xxxxxxxxxxxx
> 
> Sitz: Stuttgart, Registergericht: Amtsgericht Stuttgart, HRB 14000;
> Aufsichtsratsvorsitzender: Prof. Dr. Stefan Asenkerschbaumer; 
> Geschäftsführung: Dr. Stefan Hartung, Dr. Christian Fischer, Filiz 
> Albrecht, Dr. Markus Forschner, Dr. Markus Heyn, Rolf Najork
> 
> -----Ursprüngliche Nachricht-----
> Von: tycho-dev <tycho-dev-bounces@xxxxxxxxxxx> Im Auftrag von 
> Christoph Läubrich
> Gesendet: Dienstag, 5. April 2022 07:42
> An: tycho-dev@xxxxxxxxxxx
> Betreff: Re: [tycho-dev] Breaking change in 2.7.0?
> 
> Hi Dirk,
> 
> we also use Github Discussions[1] for Tycho so feel free to post is there if you like to reach a greater audience.
> 
> Regarding your questions:
> 
>   > There is no newer version of that plugin. So obviously the only  > solution is either to not update to 2.7.0 or to disable the plugin.
> 
> If it is open-source you could obviously propose a patch as a third alternative.
> 
>   > I’m just wondering, is that class really removed or moved?
> 
> it is located here now:
> 
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgith
> ub.com%2Feclipse%2Ftycho%2Fblob%2Fmaster%2Ftycho-bundles%2Forg.eclipse
> .tycho.embedder.shared%2Fsrc%2Fmain%2Fjava%2Forg%2Feclipse%2Ftycho%2FB
> uildProperties.java&amp;data=04%7C01%7Cdirk.fauth%40de.bosch.com%7Cd79
> a3e19a20748a54bee08da16d127f9%7C0ae51e1907c84e4bbb6d648ee58410f4%7C0%7
> C0%7C637847384817182248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLC
> JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=YNGZIKx5
> JuKY4CQtPs09gQNy1bbCYDjbcYnPwXr5dRc%3D&amp;reserved=0
> 
>   > And isn’t that a breaking change
> 
> The tycho-internals are not considered public-api, if a plugin extends tycho, it has to declare a given version according to the maven-versioning rules and will always fetch its compatible tycho version.
> If you override that in your pom (e.g. forcing maven to use a never
> version) you are mostly doing that on your own risk.
> 
>   > would have forced to update the MAJOR part  > of the Tycho
> 
> See [2] for the version policy, in general we consider only things that affecting Tycho users at the pom/tool level a breaking change. The rationale is, that users actually don't care if the *internals* change, e.g you won't notice that move of BuildProperties and it does not add any value, so why should you upgrade to a never version?
> And in this particular case the outcome would be the same: You would have to stay at Tycho 2.5.0 or update the plugin that depends on Tycho internals.
> 
> 
> 
> [1] 
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgith
> ub.com%2Feclipse%2Ftycho%2Fdiscussions&amp;data=04%7C01%7Cdirk.fauth%4
> 0de.bosch.com%7Cd79a3e19a20748a54bee08da16d127f9%7C0ae51e1907c84e4bbb6
> d648ee58410f4%7C0%7C0%7C637847384817182248%7CUnknown%7CTWFpbGZsb3d8eyJ
> WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000
> &amp;sdata=obNSMzoASQHoNaGpiBY4yoVhvpD92IWngX0xuOaT4rc%3D&amp;reserved
> =0
> [2]
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgith
> ub.com%2Feclipse%2Ftycho%2Fblob%2Fmaster%2FCONTRIBUTING.md%23increasin
> g-versions&amp;data=04%7C01%7Cdirk.fauth%40de.bosch.com%7Cd79a3e19a207
> 48a54bee08da16d127f9%7C0ae51e1907c84e4bbb6d648ee58410f4%7C0%7C0%7C6378
> 47384817182248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2l
> uMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=W7oV7euWAISQrjm1B
> vLO9qedcR1NVRSECkpOlCKZFKY%3D&amp;reserved=0
> 
> Am 05.04.22 um 07:00 schrieb Fauth Dirk (XC-ECO/ESM1) via tycho-dev:
>> Hi,
>>
>> I tried to update to Tycho 2.7.0. We are using 
>> org.jboss.tools.tycho-plugins:repository-utils in the pom.xml of the
>> p2 repo.
>>
>> With 2.7.0 the build fails with the following exception:
>>
>> Execution generate-facade of goal
>> org.jboss.tools.tycho-plugins:repository-utils:2.5.0:generate-reposit
>> o
>> ry-facade
>> failed: A required class was missing while executing
>> org.jboss.tools.tycho-plugins:repository-utils:2.5.0:generate-repository-facade:
>> org/eclipse/tycho/core/shared/BuildProperties
>>
>> There is no newer version of that plugin. So obviously the only 
>> solution is either to not update to 2.7.0 or to disable the plugin.
>>
>> I’m just wondering, is that class really removed or moved? And isn’t 
>> that a breaking change that would have forced to update the MAJOR 
>> part of the Tycho version and not just the MINOR part?
>>
>> Mit freundlichen Grüßen / Best regards
>>
>> *Dirk Fauth*
>>
>> Cross-Domain Computing Solutions, Cross Automotive Platforms - 
>> System, Software and Tools Engineering Engineering Software Methods 
>> and Tools1
>> (XC-ECO/ESM1)
>> Robert Bosch GmbH | Postfach 30 02 20 | 70442 Stuttgart | GERMANY | 
>> www.bosch.com <www.bosch.com> Tel. +49 711 811-57819 | Telefax +49 
>> 711
>> 811 | Dirk.Fauth@xxxxxxxxxxxx <mailto:Dirk.Fauth@xxxxxxxxxxxx>
>>
>> Sitz: Stuttgart, Registergericht: Amtsgericht Stuttgart, HRB 14000;
>> Aufsichtsratsvorsitzender: Prof. Dr. Stefan Asenkerschbaumer;
>> Geschäftsführung: Dr. Stefan Hartung, Dr. Christian Fischer, Filiz 
>> Albrecht, Dr. Markus Forschner, Dr.
>> Markus Heyn, Rolf Najork ​
>>
>>
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