Subject: bug#63068: What I was trying to do

From: Julian Flake <[email-masked]>
Date: Fri, 28 Apr 2023 22:36:30 +0200

What I tried is

$ guix shell --with-version=maven=3.9.1 maven

(or any other version that exists) and got:

guix shell: warning: could not find version 3.9.1 of 'maven' 
upstream

The patch above resolves the origin uri in gnu/packages/maven.scm 
(definition of maven-pom) to something available, 
e.g. https://dlcdn.apache.org/maven/maven-3/3.9.1/source/apache-maven-3.9.1-src.tar.gz