Use Maven 4.0.0-beta-4 to build, use split repo, cache only the remote repo

Author: gnodet

.github/workflows/maven.yml

@@ -51,12 +51,13 @@ jobs:
 
       - uses: actions/cache@v4
         with:
-          path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ github.sha }}
+          path: ~/.m2/repository/cached
+          key: maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: maven-
 
       - name: Set up Maven
         run:
-          mvn --errors --batch-mode --show-version org.apache.maven.plugins:maven-wrapper-plugin:3.3.2:wrapper "-Dmaven=3.9.7"
+          mvn --errors --batch-mode --show-version org.apache.maven.plugins:maven-wrapper-plugin:3.3.2:wrapper "-Dmaven=4.0.0-beta-4"
 
       - name: Build with Maven
         run: ./mvnw verify -e -B -V -DdistributionFileName=apache-maven
@@ -132,7 +133,13 @@ jobs:
 
       - name: Set up Maven
         run:
-          mvn --errors --batch-mode --show-version org.apache.maven.plugins:maven-wrapper-plugin:3.3.2:wrapper "-Dmaven=3.9.7"
+          mvn --errors --batch-mode --show-version org.apache.maven.plugins:maven-wrapper-plugin:3.3.2:wrapper "-Dmaven=4.0.0-beta-4"
+
+      - uses: actions/cache@v4
+        with:
+          path: ~/.m2/repository/cached
+          key: maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: maven-
 
       - name: Build Maven
         run: ./mvnw install -e -B -V -DdistributionFileName=apache-maven -DskipTests -f maven/pom.xml

.mvn/maven.properties

@@ -0,0 +1 @@
+aether.lrm.enhanced.split = true