Include only the mod meta data file for the respective loader

Also clean up the entire processResources block in the process cause it was a
mere coincidence that it has worked properly.

versions/common.gradle

@@ -458,34 +458,27 @@ jar {
     }
 }
 
-processResources
+processResources {
-        {
     // this will ensure that this task is redone when the versions change.
     inputs.property 'version', { project.version }
     inputs.property 'mcversion', { mcVersionStr }
 
     // replace stuff in mcmod.info (forge) and fabric.mod.json, nothing else
-            from(sourceSets.main.resources.srcDirs) { spec ->
+    filesMatching(['mcmod.info', 'fabric.mod.json']) {
-                include 'mcmod.info'
-                include 'fabric.mod.json'
-
         // replace version and mcversion
-                afterEvaluate {
+        expand 'version': project.version, 'mcversion': mcVersionStr
-                    spec.expand 'version': project.version, 'mcversion': mcVersionStr
-                }
     }
 
     // strip comments from (strict) JSON files
-            from(sourceSets.main.resources.srcDirs) {
+    filesMatching('pack.mcmeta') {
-                include 'pack.mcmeta'
         filter { line -> line.trim().startsWith('//') ? '' : line}
     }
 
-            // copy everything else, thats not the mcmod.info or fabric.mod.json
+    // exclude mod meta for non-applicable loader
-            from(sourceSets.main.resources.srcDirs) {
+    if (FABRIC) {
         exclude 'mcmod.info'
+    } else {
         exclude 'fabric.mod.json'
-                exclude 'pack.mcmeta'
     }
 }