I tried both the command line (mvn gwt:compile) and via the IntelliJ Maven 
plugin.
Indeed, binding the execution to the prepare-package phase and running *mvn 
gwt:compile@compile-common *works, and I'm glad it does.

If I'm reading what you're saying correctly, this means that there is no 
way to invoke all the plugin executions with a simple command?
I personally expected *mvn gwt:compile* to invoke everything it needs (so 
everything that comes earlier in it's lifecycle, including the executions I 
bound to the prepare-package phase),
or am I missing something obvious?

Thanks again!

On Tuesday, May 9, 2017 at 1:26:28 PM UTC+2, Thomas Broyer wrote:
>
>
>
> On Tuesday, May 9, 2017 at 1:11:04 PM UTC+2, Frederik Van Hoyweghen wrote:
>>
>>
>>
>> On Tuesday, May 9, 2017 at 12:59:17 PM UTC+2, Thomas Broyer wrote:
>>>
>>>
>>> I wouldn't put any <moduleName> / <moduleShortName> into the 
>>> plugin-level <configuration>, and only put them into the <executions>.
>>>
>>
>> That's what I figured, but it seems to be a required property (The 
>> parameters 'moduleName' for goal 
>> net.ltgt.gwt.maven:gwt-maven-plugin:1.0-rc-7:compile are missing or 
>> invalid, when invoking gwt:compile).
>>
>
> How are you invoking gwt:compile? If on the command-line, then the 
> execution ID matters, and only one such execution will match (the one with 
> <id>default-cli</id>). But starting with Maven 3.3.1 you can specify the 
> execution id on the command-line too: "mvn gwt:compile@compile-common 
> gwt:compile@compile-foo".
>
> See 
> https://maven.apache.org/guides/mini/guide-default-execution-ids.html#Default_executionIds_for_Implied_Executions
>  and 
> https://maven.apache.org/guides/mini/guide-configuring-plugins.html#Using_the_executions_Tag
>
> I defined my executions as per your example:
>>
>> <configuration>
>>     <localWorkers>6</localWorkers>
>>     <skipModule>true</skipModule>
>>     <draftCompile>true</draftCompile>
>> </configuration>
>> <executions>
>>     <execution>
>>         <id>compile-common</id>
>>         <goals><goal>compile</goal></goals>
>>         <configuration>
>>             <moduleName>com.test.common</moduleName>
>>         </configuration>
>>     </execution>
>>
>>
>> etc.. but it appears the executions aren't triggered (or is this an 
>> effect of the missing moduleName under configuration?). It seems I have 
>> much to learn still.
>>
>
> Rule of thumb: if a goal is (meant to be) bound to a lifecycle phase (such 
> as gwt:compile which is bound by default to the prepare-package phase; see 
> https://tbroyer.github.io/gwt-maven-plugin/compile-mojo.html; but not 
> gwt:devmode or gwt:codeserver for example), then invoke the lifecycle 
> phase, not the goal.
> Another rule of thumb: only ever invoke the lifecycle phases "package" and 
> "verify" (and "install" and "deploy" when dealing with libraries, to share 
> them with other projects / people). If you want to skip tests, pass 
> -DskipTests, if you want to skip the compilation of tests too then pass 
> -Dmaven.test.skip.
> If you know what you're doing, then feel free to break those rules; if you 
> know what you're doing.
>
> Also, have a look at Gradle rather than Maven, if that's a possibility for 
> your project(s).
>

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