The command line issue appears to be that the debug command does not work in PowerShell. This should probably be added to the docs.

That is correct, the docs are currently linux specific. Please open an issue to at least add a note about windows, and even open a pr if you have time.

The IDE continues to show red underlines in essentially every file.

Eclipse import logic is not fool-proof. I haven't done this in a while with Keycloak so I can't say for certain that there's anything in our poms which would cause this behavior. I did recently see the same thing working with the fabric8 kubernetes client. Possible fixes:

• use the now retired maven plugin from the cli https://maven.apache.org/plugins/maven-eclipse-plugin/eclipse-mojo.html
• bulk modify the generated .classpath files to have the proper classpath entries. For example:

Instead of a path to just src, you actually need:

       <classpathentry kind="src" output="target/classes" path="src/main/java">
		<attributes>
			<attribute name="optional" value="true"/>
			<attribute name="maven.pomderived" value="true"/>
		</attributes>
	</classpathentry>

• try right clicking on the affected project(s) and select Maven->Update Project

You can also try opening an issue with the eclipse m2e project to see if they can give more details on why the default generation failed.

Thank you for your advice. Is there another IDE that works more quickly out of the box? I'm not tied to Eclipse, although I had similar issues in VS Code.

I just use eclipse, but it's been a while since I initially set things up.

cc @keycloak/cloud-native can anyone else chime in what IDE they use and how was the initial setup?

I tried some of the recommendations so far.

Maven-> Update Project appears to have helped. It's gone from thousands of reported problems to only 483. There are a lot, but many appear to be of the form:

• The package org.w3c.dom is accessible from more than one module: , java.xml
• The package org.xml.sax is accessible from more than one module: , java.xml
• The same for javax.xml.datatype, javax.xml.namespace, javax.xml.transform.dom, etc

Research suggests this may be caused by some of these packages existing in both the JRE and elsewhere, suggesting something wrong with the build path, but it's not clear to me what or how to fix it.

Modifying classpath files: I spot-checked some of these, and the kind="src" entries I saw appear to match what you listed. I did check this after the Maven Update, so it's possible that fixed them before I looked.

Things still on my to-attempt list: the retired cli plugin, asking over at m2e, trying IntelliJ as suggested by @mabartos.

I did check this after the Maven Update, so it's possible that fixed them before I looked.

Yes, it appears that the update fixed most of your issues.

but it's not clear to me what or how to fix it

There is probably a way to lowers those from errors to warnings - they aren't actually errors as you should be able to successfully build with maven.

Maybe check under the eclipse settings for Building -> Build path problems