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[cross-project-issues-dev] Caution: Platform will be "coming in hot" with M6 changes for "Mac App" layout

Our aggressive plan (in attached note) is working out pretty well. Thanks to Pascal making p2 (and other) changes, and thanks to Tycho Team for making required changes and fixes to 0.23.0-SNAPSHOT. Our Platform I-builds (downloads and repositories) from this week all have the new "Mac App" layout.

And, I have just "published" a warm-up I-Build to the staging repo that will have the new "Mac App" metadata (for the "Mac Platform/SDK products").

And, that's the reason for "Caution:". We have known all along that you (nor users) will be able to "update" from old layout, to new layout -- you have to "start fresh" with Mars (which, IMHO, is always a good idea) BUT ... as things are right now, p2 will TRY to update, and leave your installation in a broken state. So, don't do that. We still hope to fix this for M6 but as of this minute, we do not know how to. You might want to follow bug Bug 462282 for that issue.

In the meantime, don't "update" Mac "product" installations from staging (nor, our ../eclipse/updates/4.5-I-builds) repository. "Start fresh" instead ... and then future updates will work fine.

Oh, and at the moment, we may not be able to actually "sign" the executable apps for M6 ... the main reason for going through this grief! ... still watching
infrastructure bugs (Bug 462373  and Bug 445050).

And, I will end with one "tip". While there is hope getting the new layout may eventually be "completely transparent" (Bug 461606), for M6, using Tycho 0.23.0-SNAPSHOT, if you have a "product" section in your pom, it might look something like this:
            <goals>
              <goal>materialize-products</goal>
            </goals>
            <configuration>
              <profile>SDKProfile</profile>
              <products>
                <product>
                  <id>org.eclipse.platform.ide</id>
                  <rootFolder>eclipse</rootFolder>
                </product>
              </products>
            </configuration>

But will have to be changed to add a <rootFolders> element similar to this:
            <goals>
              <goal>materialize-products</goal>
            </goals>
            <configuration>
              <profile>SDKProfile</profile>
              <products>
                <product>
                  <id>org.eclipse.platform.ide</id>
                  <rootFolder>eclipse</rootFolder>
                   <rootFolders>
                     <macosx>Eclipse.app</macosx>
                   </rootFolders>
                </product>
              </products>
            </configuration>


Good luck!





From:        David M Williams/Raleigh/IBM@IBMUS
To:        cross-project-issues-dev@xxxxxxxxxxx,
Cc:        "General development mailing list of the Eclipse project." <eclipse-dev@xxxxxxxxxxx>
Date:        03/11/2015 11:20 AM
Subject:        [cross-project-issues-dev] Heads up: Platform will be "coming in        hot" with M6 changes for "Mac App" layout
Sent by:        cross-project-issues-dev-bounces@xxxxxxxxxxx




Extended team,

I wanted to make everyone aware of our latest Platform plans for M6 ... especially since it has the potential to effect "downstream" consumers and contributions to Mars Sim. Release.  If anyone sees any "blocking" aspects to this plan, let us know.


In short, we will aggressively be trying to get changes needed to build our "Mac Product" in a relatively standard "Mac App layout". See


Bug 431116 - Releases for Mac OS X should be bundled as a proper "Mac App" and/or "Library"

We felt it important to make the move by M6, to be sure problems/issues can be found, and fixed, by M7 ... otherwise, we face a greater risk making changes during RCs, or, worse, not having it well tested by anyone or no time to make important fixes.


Some issues are listed below ... may be others?


- To do this, we will soon have to move to Tycho 0.23.0-SNAPSHOT.
-- always risky to do a milestone with a "SNAPSHOT", but ... we think worth it in this case. (And we'll ask Tycho team to be "extra careful" :)
-- so far, we can not quite get our "production build" to work with it ... but, suspect we can soon.
-- For an "experimental build", see
http://download.eclipse.org/eclipse/downloads/drops4/X20150309-0218/
--- (This was produced with a locally built "patched" Tycho, and so far haven't quite got the "official" SNAPSHOT to work consistently ... but works sometimes, and issues appear unrelated to the "Mac layout")


- The change is "all or nothing" ... once we (and Tycho) move to this new layout, the old layout will no longer be possible.


* This should only effect consumers who create their own "products" ... should not effect "features" or "plugins" in any way.
* Should not effect Linux or Windows "products" in any way.

* But, anyone who does produce "products", for the Mac, will also have to use Tycho 0.23.0-SNAPSHOT for "Sim. Release".
* Effect on "PDE Builds" and "Buckminster builds" is sort of unknown (by us) ... ?  


We have set our own deadline of Sunday March 15 to "have everything working" ... and, if not by then ... *might* have to back peddle, or come up with some other plan.


Just wanted to give a little early warning of this change coming. I think for the most part, everyone will welcome the change, but may be some rough spots ahead.


Please comment in
Bug 431116 if you see issues, or open new bugs, having them 'block' that bug.

Thanks,


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