[fedora-java] How to make Xmvn search in several prefixes

[Hartmut Goebel]

Hi,

I'm packaging some Java packages for guix
https://www.gnu.org/software/guix/, a functional package manager (much
like nix).

I would appreciate some assistance for understanding how to leverage
Xmvn in this case.

Guix installs each package into a prefix of it's own, e.g.:

/gnu/store/...-plexus-io/share/java/plexus/io.jar
/gnu/store/...-dom4j-1.6.1/share/java/dom4j/dom4j.jar

Thus Xmvn shall pick up artifacts and meta-data from all prefixes
belonging to the current profile/environment. Each prefix could contain
a .../xmvn/configuration.xml and $XDG_DATA_DIRS could be used to get a
list of these.

I tried this and it worked different then expected.

I tried to use the "prefixes" (according the the Xmvn configuration
reference [1]) as shown below. But the Xmvn does not even try to access
these prefixes. Can somebody explain why, please?

    <configuration>   <resolverSettings>     <prefixes>      
    <prefix>/gnu/store/...-plexus-io</prefix>     </prefixes>  
    </resolverSettings> </configuration>

I learned that I need to define <metadataRepositories>, which worked.
But I'm wondering what are the <prefixes> then used for and how to test
whether my set-up is correct.

Thanks in advance for any answer.

Please note: I'm using Xmvn 2.5.0 since this is what my distribution
currently ships .

[1] https://fedora-java.github.io/xmvn/config.html

-- 
Regards
Hartmut Goebel

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