use multiloader template

fabric/build.gradle

@@ -1,49 +1,37 @@
 plugins {
-    id "com.github.johnrengelman.shadow"
+    id 'multiloader-loader'
+    id 'fabric-loom'
 }
-
-architectury {
-    platformSetupLoomIde()
-    fabric()
-}
-
-configurations {
-    common {
-        canBeResolved = true
-        canBeConsumed = false
-    }
-    compileClasspath.extendsFrom common
-    runtimeClasspath.extendsFrom common
-    developmentFabric.extendsFrom common
-
-    // Files in this configuration will be bundled into your mod using the Shadow plugin.
-    // Don"t use the `shadow` configuration from the plugin itself as it"s meant for excluding files.
-    shadowBundle {
-        canBeResolved = true
-        canBeConsumed = false
-    }
-}
-
 dependencies {
-    modImplementation "net.fabricmc:fabric-loader:$rootProject.fabric_loader_version"
-
-    common(project(path: ":common", configuration: "namedElements")) { transitive false }
-    shadowBundle project(path: ":common", configuration: "transformProductionFabric")
+    minecraft "com.mojang:minecraft:${minecraft_version}"
+    mappings loom.layered {
+        officialMojangMappings()
+        parchment("org.parchmentmc.data:parchment-${parchment_minecraft}:${parchment_version}@zip")
+    }
+    modImplementation "net.fabricmc:fabric-loader:${fabric_loader_version}"
 }
 
-processResources {
-    inputs.property "version", project.version
+loom {
+    def aw = project(':common').file("src/main/resources/${mod_id}.accesswidener")
+    if (aw.exists()) {
+        accessWidenerPath.set(aw)
+    }
+    mixin {
+        defaultRefmapName.set("${mod_id}.refmap.json")
+    }
+    runs {
+        client {
+            client()
+            setConfigName('Fabric Client')
+            ideConfigGenerated(true)
+            runDir('../run/client')
+        }
 
-    filesMatching("fabric.mod.json") {
-        expand version: project.version
+        server {
+            server()
+            setConfigName('Fabric Server')
+            ideConfigGenerated(true)
+            runDir('../run/server')
+        }
     }
 }
-
-shadowJar {
-    configurations = [project.configurations.shadowBundle]
-    archiveClassifier = "dev-shadow"
-}
-
-remapJar {
-    input.set shadowJar.archiveFile
-}