sourceSets { main{ resources { srcDirs += [ 'src/main/generated' ] } } } loom { runs { datagen { server() name "Minecraft Data" vmArg "-Dfabric-api.datagen" vmArg "-Dfabric-api.datagen.output-dir=${file("src/main/generated")}" runDir "build/datagen" } } } assemble.dependsOn runDatagen