chore(deps): downgrade to Java 17

Java 19 is out of support, but Gradle current does not run on Java 20:
https://github.com/gradle/gradle/issues/23488

To avoid the complexity of running the build tool on a different JDK than the
application, we temporarily remove code that depends on experimental Java 19 or
Java 20 features.

Revert once the build can run on Java 20.

1 files changed, 0 insertions, 18 deletions

diff --git a/subprojects/language-web/build.gradle.kts b/subprojects/language-web/build.gradle.kts
index e1d250ec..d398e002 100644
--- a/subprojects/language-web/build.gradle.kts
+++ b/subprojects/language-web/build.gradle.kts
@@ -29,13 +29,6 @@ dependencies {
 
 application {
         mainClass.set("tools.refinery.language.web.ServerLauncher")
-        // Enable JDK 19 preview features for virtual thread support.
-        applicationDefaultJvmArgs += "--enable-preview"
-}
-
-// Enable JDK 19 preview features for virtual thread support.
-fun enablePreview(task: JavaForkOptions) {
-        task.jvmArgs("--enable-preview")
 }
 
 tasks {
@@ -47,16 +40,6 @@ tasks {
                 }
         }
 
-        withType(JavaCompile::class) {
-                options.release.set(19)
-                // Enable JDK 19 preview features for virtual thread support.
-                options.compilerArgs.plusAssign("--enable-preview")
-        }
-
-        withType(Test::class) {
-                enablePreview(this)
-        }
-
         jar {
                 dependsOn(webapp)
                 from(webapp) {
@@ -82,7 +65,6 @@ tasks {
                 dependsOn(mainRuntimeClasspath)
                 classpath(mainRuntimeClasspath)
                 mainClass.set(application.mainClass)
-                enablePreview(this)
                 standardInput = System.`in`
                 val baseResource = webapp.incoming.artifacts.artifactFiles.first()
                 environment("BASE_RESOURCE", baseResource)