Update to 1.20

Now uses split-sourceset's

build.gradle

@@ -6,6 +6,10 @@ plugins {
 version = project.mod_version
 group = project.maven_group
 
+base {
+	archivesName = project.archives_base_name
+}
+
 repositories {
 	// Add repositories to retrieve artifacts from in here.
 	// You should only use this when depending on other mods because
@@ -14,6 +18,18 @@ repositories {
 	// for more information about repositories.
 }
 
+loom {
+    splitEnvironmentSourceSets()
+
+    mods {
+        "modid" {
+            sourceSet sourceSets.main
+            sourceSet sourceSets.client
+        }
+    }
+
+}
+
 dependencies {
 	// To change the versions see the gradle.properties file
 	minecraft "com.mojang:minecraft:${project.minecraft_version}"
@@ -22,17 +38,13 @@ dependencies {
 
 	// Fabric API. This is technically optional, but you probably want it anyway.
 	modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
-
+	
 	// Uncomment the following line to enable the deprecated Fabric API modules. 
 	// These are included in the Fabric API production distribution and allow you to update your mod to the latest modules at a later more convenient time.
 
 	// modImplementation "net.fabricmc.fabric-api:fabric-api-deprecated:${project.fabric_version}"
 }
 
-base {
-	archivesName = project.archives_base_name
-}
-
 processResources {
 	inputs.property "version", project.version
 
@@ -42,7 +54,6 @@ processResources {
 }
 
 tasks.withType(JavaCompile).configureEach {
-	// Minecraft 1.18 (1.18-pre2) upwards uses Java 17.
 	it.options.release = 17
 }
 
@@ -58,7 +69,7 @@ java {
 
 jar {
 	from("LICENSE") {
-		rename { "${it}_${base.archivesName.get()}"}
+		rename { "${it}_${project.archivesBaseName}"}
 	}
 }
 
@@ -77,4 +88,4 @@ publishing {
 		// The repositories here will be used for publishing your artifact, not for
 		// retrieving dependencies.
 	}
-}
+}