I read the Gradle docs again

Author: TropheusJ

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 }
 
 group = "fish.cichlidmc"
-version = "2.0.0"
+version = "2.0.1"
 
 repositories {
     mavenCentral()
@@ -22,6 +22,11 @@ java {
     }
 }
 
+tasks.compileJava {
+    // sync module version so it can be read at runtime
+    options.javaModuleVersion = provider { version as String }
+}
+
 tasks.test {
     useJUnitPlatform()
 }

src/main/java/module-info.java

@@ -1,5 +1,5 @@
 open module fish.cichlidmc.tinyjson {
-	requires static org.jetbrains.annotations;
+	requires static transitive org.jetbrains.annotations;
 
 	exports fish.cichlidmc.tinyjson;
 	exports fish.cichlidmc.tinyjson.value;

src/test/java/fish/cichlidmc/tinyjson/test/def/MiscTests.java

@@ -0,0 +1,11 @@
+package fish.cichlidmc.tinyjson.test.def;
+
+import fish.cichlidmc.tinyjson.TinyJson;
+import org.junit.jupiter.api.Test;
+
+public final class MiscTests {
+	@Test
+	public void checkModuleVersion() {
+		TinyJson.class.getModule().getDescriptor().version().orElseThrow();
+	}
+}

src/test/java/module-info.java

@@ -0,0 +1,6 @@
+// the test sourceSet must be a module for Gradle to treat the main sourceSet as a module.
+// we want that so we can verify that the metadata is set correctly.
+open module fish.cichlidmc.tinyjson.test {
+	requires fish.cichlidmc.tinyjson;
+	requires org.junit.jupiter.api;
+}