Make built packages require JDK 8 or 11

SOURCES/javapackages-config.json

@@ -0,0 +1,20 @@
+{
+    "maven.req": {
+        "always_generate": [
+            "javapackages-filesystem",
+            "(java-headless or java-11-headless)"
+        ],
+        "java_requires": {
+            "skip": true
+        },
+        "java_devel_requires": {
+            "skip": true
+        }
+    },
+    "javadoc.req": {
+        "always_generate": [
+            "javapackages-filesystem"
+        ]
+    }
+}
+

SPECS/javapackages-tools.spec

@@ -33,6 +33,7 @@ BuildArch:      noarch
 Source0:        https://github.com/fedora-java/javapackages/archive/%{version}.tar.gz
 Source1:        module-config.xml
 Source2:        toolchains-openjdk8.xml
+Source3:        javapackages-config.json
 
 Patch1:         0001-Move-python-modules-under-java-utils-directory.patch
 Patch2:         0002-Enable-namespaced-dependency-generation.patch
@@ -174,6 +175,8 @@ rm -rf %{buildroot}%{_mandir}/man7/gradle_build.7
 mkdir -p %{buildroot}%{_datadir}/xmvn/conf/
 cp -p %{SOURCE2} %{buildroot}%{_datadir}/xmvn/conf/toolchains.xml
 
+install -p -m 644 %{SOURCE3} %{buildroot}%{_javaconfdir}/javapackages-config.json
+
 %check
 ./check