Hi Robert,

I'd recommend to start with platform/openide.util.lookup - the code for it
does not have any dependencies, the group of its test dependencies is
fairly small and self-contained, and the resulting jar is useful by itself.
It also shows what Lazslo mentioned - a semi-circular dependency in test
dependencies. The test dependencies for openide.util.lookup are:
platform/libs.junit4 and harness/nbjunit. platform/libs.junit4 is a plain
wrapped for junit4, that shouldn't be a problem. harness/nbjunit has module
dependencies: harness/o.n.insane, platform/junit4 and
platform/openide.util.lookup and test dependencies: platform/libs.junit4
(which is unnecessary to mention), platform/openide.util.ui,
platform/openide.util and platform/openide.util.lookup. And I believe all
these modules only have dependencies from this list, so this should be
self-contained.

Not sure what would be the next step once the openide.util.lookup would
work - possibly have a working platform (i.e. everything under the platform
directory, so that it would actually start), but the issue there is that
the NetBeans modulesystem needs a specific filesystem structure to start.
Here:
https://github.com/apache/netbeans-mavenutils-nbm-maven-plugin

are tasks like:
https://github.com/apache/netbeans-mavenutils-nbm-maven-plugin/blob/master/src/main/java/org/apache/netbeans/nbm/CreateClusterAppMojo.java
https://github.com/apache/netbeans-mavenutils-nbm-maven-plugin/blob/master/src/main/java/org/apache/netbeans/nbm/CreateClusterMojo.java

may be interesting there, although those are not meant to work on the base
platform cluster, I believe, so I'd expect some tweaking there.


A completely different approach might be to try to peel off some "leaf"
clusters of modules (those that noone else is depending on them) using the
existing tools above (i.e. depending on existing modules built by Ant, and
"exported" to Maven - there are tools for that already). This might mean
e.g. the apisupport of javafx clusters (directories in the repository). The
main complication there might be that in the main NetBeans code base, tests
directories may have dependencies on other test directories. So, e.g.,
tests of apisupport/apisupport.project.ant depend on tests of
platform/openide.util.lookup (and other). So solving this might be tricky,
esp. if openide.util.lookup would not be converted to Maven yet.


I am eager to hear what you think/what are your experiences!

Thanks,
    Jan


On Mon, Sep 2, 2019 at 11:24 PM Robert Scholte <[email protected]> wrote:

> Hi,
>
> this month I'll be giving a training about Maven. The last part of the
> session I want to use to transform existing projects to Maven.
> Since Netbeans is still using Ant, it might be an interesting experiment
> to see if this project can ALSO be built with Maven.
> To increase the chance of success, I'd like to have an ordered list of
> the
> Netbeans "deliverables", starting with the least amount of internal
> dependencies.
> Can anybody provide me such a starting list?
>
> regards,
> Robert Scholte
>
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