java.configuration.maven.globalSettings doesn't seem to work

[itaranto]

I have the following config inside /etc/maven/settings.xml (the global settings)

  <localRepository>${user.home}/.cache/maven/repository</localRepository>

But jdtls insists on creating ~/.m2/repository/.

I tried overriding Maven's globalSettings but they don't seem to work either. This are my java settings (Neovim):

        settings = {
          java = {
              -- ...
              maven = {
                userSettings = home_dir .. '/.config/maven/settings.xml',
                globalSettings = '/etc/maven/settings.xml',
              },
            },
          },
        },

I know the are correct because userSettings are actually being picked up (I have some other config there so I can confirm that).

I also tried setting localRepository inside ~/.config/maven/settings.xml and that works just fine (no ~/.m2/ directory being created).

[rgrunber]

Do you have a link to the client you are using ? Is it neovim with https://github.com/mfussenegger/nvim-jdtls or some other ? Are you sure your settings are being picked up from java.maven.userSettings or java.maven.globalSettings ? I ask because the proper (nested) settings should be java.configuration.maven.userSettings :

eclipse.jdt.ls/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/preferences/Preferences.java

Lines 314 to 322 in e738410

	/**
	* Preference key for Maven user settings.xml location.
	*/
	public static final String MAVEN_USER_SETTINGS_KEY = "java.configuration.maven.userSettings";
	/**
	* Preference key for Maven global settings.xml location.
	*/
	public static final String MAVEN_GLOBAL_SETTINGS_KEY = "java.configuration.maven.globalSettings";

I tried it out myself (in vscode-java), and it is working for me so maybe this is just some kind of configuration issue. I'd need to know more about the client though to see how they interact with the language server.

[itaranto]

Do you have a link to the client you are using ? Is it neovim with https://github.com/mfussenegger/nvim-jdtls or some other ?

Yes, I'm using nvim-jdtls.

Are you sure your settings are being picked up from java.maven.userSettings or java.maven.globalSettings ?

I think you may be right here, I forgot that I had a shell alias too: alias mvn="mvn -s $HOME/.config/maven/settings.xml".

So it's most likely it's picking up my user settings from the alias and not from userSettings. So basically, neither userSettings nor globalSettings seem to be working (I tested by removing the alias).

I ask because the proper (nested) settings should be java.configuration.maven.userSettings :

These are the full settings:

        -- ...
        settings = {
          java = {
            configuration = {
              runtimes = {
                { name = 'JavaSE-11', path = '/usr/lib/jvm/java-11-openjdk/' },
                { name = 'JavaSE-17', path = '/usr/lib/jvm/java-17-openjdk/' },
                { name = 'JavaSE-21', path = '/usr/lib/jvm/java-21-openjdk/' },
              },
              maven = {
                userSettings = home_dir .. '/.config/maven/settings.xml',
                globalSettings = '/etc/maven/settings.xml',
              },
            },
          },
        },
        -- ...

As you can see it's java.configuration.maven.

Let me know if you need my full config, I'm not pasting it here since it can be quite long.

[itaranto]

Also, like I mentioned in my first comment, it's weird that my global settings from /etc/maven/settings.xml are not being picked up automatically.

[itaranto]

Well, I found something weirder.

It seems the .m2/repository dir gets created for new projects only. I mean, the ones that hasn't been complied already.

If I open a project that's already compiled, then the .m2/repository doesn't get created.

Excuse my terminology, I don't actually know if JDTLS actually complies the whole project or not. I'm also not a Java developer.

[itaranto]

It seems the actual .jar files are being put in the correct location ~/.cache/maven/repository.

For example, when opening a specific project the first time, the ~/.m2/repository/ directory only contains a resolver-status.properties file. So maybe these projects I'm browsing may have some weird build setup, I don't know.

Maybe I could try testing this on a more "sane" Java repository, like an open-source project.

[snjeza]

@itaranto could you show your /etc/maven/settings.xml ?

[itaranto]

@itaranto could you show your /etc/maven/settings.xml ?

Yes, but it has nothing interesting. It's just the default plus the localRepository entry I mentioned at the beginning.

settings.txt

I renamed settings.xml to settings.txt because of Github...

[snjeza]

Yes, but it has nothing interesting. It's just the default plus the localRepository entry I mentioned at the beginning

I have tried it in VS Code. It works fine.
Is /etc/maven/settings.xml accessible?

[itaranto]

Yes, but it has nothing interesting. It's just the default plus the localRepository entry I mentioned at the beginning

I have tried it in VS Code. It works fine. Is /etc/maven/settings.xml accessible?

I'm sorry if I didn't clarified this before, but my Maven config works perfectly fine when running it from the CLI (mvn compile, mvn install, etc).

[snjeza]

I'm sorry if I didn't clarified this before, but my Maven config works perfectly fine when running it from the CLI (mvn compile, mvn install, etc).

Could you run

$ mvn -X | grep "Reading global settings"

[itaranto]

I'm sorry if I didn't clarified this before, but my Maven config works perfectly fine when running it from the CLI (mvn compile, mvn install, etc).

Could you run

$ mvn -X | grep "Reading global settings"

$ mvn -X | grep "Reading global settings"
[DEBUG] Reading global settings from /usr/share/maven/conf/settings.xml

/usr/share/maven/conf/settings.xml is a symlink to /etc/maven/settings.xml

$ ls -l /usr/share/maven/conf/settings.xml
lrwxrwxrwx. 1 root root 23 Mar  4  2024 /usr/share/maven/conf/settings.xml -> /etc/maven/settings.xml

Again, I didn't open this issue because of Maven not reading my settings, mvn reads my localRepository setting just fine.

[snjeza]

Again, I didn't open this issue because of Maven not reading my settings, mvn reads my localRepository setting just fine

Could you try to reproduce the issue in VS Code?