maven install failes: plugin for this project did not assign a main file to the project

[ChrWeissDe]

Starting from version >= 3.x the behaviour of the maven-install-plugin changed.
It is not longer possible to install "attached artefacts" only.

Thus when running a build with a new maven-install-plugin version you might see the following error:
--> failed to execute goal org.apache.maven.plugins:maven-install-plugin:3.0.0-M1:install (default-install) on project <project_name>: NoFileAssignedException: The packaging plugin for this project did not assign a main file to the project but it has attachments. Change packaging to 'pom'. -> [Help 1]

The issue is also discussed here: https://issues.apache.org/jira/browse/MINSTALL-151

[ChrWeissDe]

Possible workaround is to use either "old plugins" - or to define the allowIncompleteProjects for the maven-install-plugin:
see: https://github.com/ot4i/ace-maven-plugin/blob/feature/java17/samples/SumAPI/Calculator_LIB/pom.xml

next step is to check if we can define a "primary artifact" within the plugin itself;

[ChrWeissDe]

Current code which is used for the bar packaging:
https://github.com/ot4i/ace-maven-plugin/blob/feature/java17/ace-maven-plugin/src/main/java/ibm/maven/plugins/ace/mojos/PackageaceBarMojo.java

Uses "under the cover":

• assemblies/ace-bar-project.xml
• maven-source-plugin (to attach the source code - if requested)
• build-helper-maven-plugin to attach the bar file