Xtykutl

I am configuring maven for few dsl (xtext) types of projects.
I configured all I need for a dsl1 (xtext) plugins, it worked successfully (generate java sources, build, run tests, export, generate P2).

Then, I moved same pom.xml configurations for my next dsl2 plugins, that are pretty the same and got an issue:

[ERROR] Failed to execute goal org.eclipse.xtext:xtext-maven-plugin:2.16.0.M1:generate (default) on project com.dsl.dsl2: Execution default of goal org.eclipse.xtext:xtext-maven-plugin:2.16.0.M1:generate failed: Plugin org.eclipse.xtext:xtext-maven-plugin:2.16.0.M1 or one of its dependencies could not be resolved: Could not find artifact com.dsl.dsl2:com.dsl.dsl2:jar:0.1.0-SNAPSHOT 

The plugin that run is com.dsl.dsl2 and it tells that it can not find itself.
Indeed for some reason maven fails to copy it into corresponding .m2/repository location.
I tried different solutions to solve it, and one of them was to remove the whole ~/.m2/repository and to regenerate it.
But now, instead of solving my problem, I am facing different other problems.

For all my repos that worked before to run mvn clean verify, now all complains with same error:

[INFO] Resolving class path of MavenProject: com.dsl.dsl2:com.dsl.dsl2:1.1.1-SNAPSHOT @ /<my_path>/<my_repo>/com.dsl.dsl2/pom.xml

[ERROR] Internal error: org.eclipse.tycho.core.osgitools.OsgiManifestParserException: Exception parsing OSGi MANIFEST ~/.m2/repository/p2/osgi/bundle/org.eclipse.xtext.xtext.generator/2.15.0.v20180916-0722/org.eclipse.xtext.xtext.generator-2.15.0.v20180916-0722.jar: zip file is empty -> [Help 1]

org.apache.maven.InternalErrorException: Internal error: org.eclipse.tycho.core.osgitools.OsgiManifestParserException: Exception parsing OSGi MANIFEST ~/.m2/repository/p2/osgi/bundle/org.eclipse.xtext.xtext.generator/2.15.0.v20180916-0722/org.eclipse.xtext.xtext.generator-2.15.0.v20180916-0722.jar: zip file is empty

    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120)

    ...

Caused by: org.eclipse.tycho.core.osgitools.OsgiManifestParserException: Exception parsing OSGi MANIFEST ~/.m2/repository/p2/osgi/bundle/org.eclipse.xtext.xtext.generator/2.15.0.v20180916-0722/org.eclipse.xtext.xtext.generator-2.15.0.v20180916-0722.jar: zip file is empty

    at org.eclipse.tycho.core.osgitools.DefaultBundleReader.doLoadManifest (DefaultBundleReader.java:68)

    ...

at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)

Caused by: java.util.zip.ZipException: zip file is empty

    at java.util.zip.ZipFile.open (Native Method)

    ...

Could you please help me to understand how can I solve this last issue first?
The jar file seems to be correct:

% ls -lsa ~/.m2/repository/p2/osgi/bundle/org.eclipse.swt.gtk.linux.x86/3.105.3.v20170228-0512/

2568 <user> 2616403  org.eclipse.swt.gtk.linux.x86-3.105.3.v20170228-0512.jar

   4 <user> 219      org.eclipse.swt.gtk.linux.x86-3.105.3.v20170228-0512-p2artifacts.xml

And I don't know why it is using xtext 2.15.0 as
I specified in pom.xml properties

<xtend.version>2.16.0.M1</xtend.version>

<xtext.version>2.16.0.M1</xtext.version>

My maven:

% mvn -version

Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T21:33:14+03:00)

Maven home: ~/maven/apache-maven-3.5.4

Java version: 1.8.0_45, vendor: Oracle Corporation, runtime: 

Default locale: en_US, platform encoding: ISO-8859-1

OS name: "linux", version: "2.6.32-642.11.1.el6.x86_64", arch: "amd64", family: "unix"

And I am using proxy.

Update:
That is the content of unzipped jar it complains about.

% ls  /org.eclipse.swt.gtk.linux.x86-3.105.3.v20170228-0512

about_files  fragment.properties     libswt-cairo-gtk-4629.so  libswt-gtk-4629.so          libswt-pi-gtk-4629.so         libswt-xulrunner-fix10.so     META-INF  swt.xpt

about.html   libswt-atk-gtk-4629.so  libswt-glx-gtk-4629.so    libswt-mozilla-gtk-4629.so  libswt-webkit-gtk-4629.so     libswt-xulrunner-fix31.so     org       version.txt

chrome.manifest  libswt-awt-gtk-4629.so  libswt-gnome-gtk-4629.so  libswt-pi3-gtk-4629.so      libswt-xpcominit-gtk-4629.so  libswt-xulrunner-gtk-4629.so  swt.js

I am using simple target platform configuration:

    <repository>

        <id>xtext</id>

        <url>http://download.eclipse.org/modeling/tmf/xtext/updates/composite/releases/</url>

        <layout>p2</layout>

    </repository>

    <repository>

        <id>eclipse</id>

        <url>http://download.eclipse.org/releases/neon/201705151400/</url>

        <layout>p2</layout>

    </repository>

Update:
I have solved my problem, but I can't say that it's a solution for the problems I had.

• The last error I had is about Time Out due to Proxy limitations, I
  believe. It has been solved in next day by itself.


• The 1st outlined error I solved by recreating my pom configurations based on https://www.eclipse.org/Xtext/documentation/350_continuous_integration.html
  Basically, I am not using any more <artifactId>xtext-maven-plugin</artifactId> that was failing, and it is recommended to use it in a non eclipse plugin in case you need. I don't need it.