kotlin upgraded, site started

gradle.properties

@@ -28,4 +28,10 @@ android.useAndroidX=true
 android.nonTransitiveRClass=true
 
 # other
-kotlin.native.cacheKind.linuxX64=none
+kotlin.native.cacheKind.linuxX64=none
+
+# Workaround: Ensure Gradle uses a JDK with `jlink` available for AGP's JDK image transform.
+# On this environment, the system JDK 21 installation lacks `jlink`, causing
+# :lynglib:androidJdkImage to fail. Point Gradle to JDK 17 which includes `jlink`.
+# This affects only the JDK Gradle runs with; Kotlin/JVM target remains compatible.
+org.gradle.java.home=/usr/lib/jvm/java-17-openjdk-amd64

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 agp = "8.5.2"
 clikt = "5.0.3"
-kotlin = "2.2.20"
+kotlin = "2.2.21"
 android-minSdk = "24"
 android-compileSdk = "34"
 kotlinx-coroutines = "1.10.2"

lyng/build.gradle.kts

@@ -16,7 +16,7 @@
  */
 
 plugins {
-    kotlin("multiplatform") version "2.2.20"
+    alias(libs.plugins.kotlinMultiplatform)
 }
 
 group = "net.sergeych"

lynglib/build.gradle.kts

@@ -23,21 +23,13 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 group = "net.sergeych"
 version = "1.0.0-SNAPSHOT"
 
-buildscript {
+// Removed legacy buildscript classpath declarations; plugins are applied via the plugins DSL below
-    repositories {
-        mavenCentral()
-    }
-    dependencies {
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.0")
-        classpath("com.codingfeline.buildkonfig:buildkonfig-gradle-plugin:latest_version")
-    }
-}
 
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidLibrary)
 //    alias(libs.plugins.vanniktech.mavenPublish)
-    kotlin("plugin.serialization") version "2.1.0"
+    kotlin("plugin.serialization") version "2.2.21"
     id("com.codingfeline.buildkonfig") version "0.17.1"
     `maven-publish`
 }
@@ -84,9 +76,10 @@ kotlin {
         all {
             languageSettings.optIn("kotlinx.coroutines.ExperimentalCoroutinesApi")
             languageSettings.optIn("kotlin.ExperimentalUnsignedTypes")
-            languageSettings.optIn("kotlin.coroutines.DelicateCoroutinesApi")
+            // Correct opt-in markers for coroutines
+            languageSettings.optIn("kotlinx.coroutines.DelicateCoroutinesApi")
             languageSettings.optIn("kotlin.contracts.ExperimentalContracts")
-            languageSettings.optIn("kotlinx.coroutines.flow.DelicateCoroutinesApi")
+            languageSettings.optIn("kotlinx.coroutines.FlowPreview")
         }
 
         val commonMain by getting {

settings.gradle.kts

@@ -36,3 +36,4 @@ dependencyResolutionManagement {
 rootProject.name = "lyng"
 include(":lynglib")
 include(":lyng")
+include(":site")

site/build.gradle.kts

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * Compose HTML (JS-only) SPA module
+ */
+
+plugins {
+    alias(libs.plugins.kotlinMultiplatform)
+    // Compose compiler plugin for Kotlin 2.2.21 (matches version catalog)
+    id("org.jetbrains.kotlin.plugin.compose") version "2.2.21"
+    // Compose Multiplatform plugin for convenient dependencies (compose.html.core, etc.)
+    id("org.jetbrains.compose") version "1.9.3"
+}
+
+kotlin {
+    js(IR) {
+        browser {
+            commonWebpackConfig {
+                // Enable CSS handling
+                cssSupport {
+                    enabled.set(true)
+                }
+                // Ensure predictable output name so we can reference it from index.html
+                outputFileName = "site.js"
+            }
+        }
+        binaries.executable()
+    }
+
+    sourceSets {
+        val jsMain by getting {
+            dependencies {
+                implementation("org.jetbrains.compose.runtime:runtime:1.9.3")
+                implementation("org.jetbrains.compose.html:html-core:1.9.3")
+            }
+        }
+        val jsTest by getting {
+            dependencies {
+                implementation(libs.kotlin.test)
+            }
+        }
+    }
+}
+
+// Optional: configure toolchain if needed by the project; uses root Kotlin version from version catalog

site/src/jsMain/kotlin/Main.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import org.jetbrains.compose.web.dom.*
+import org.jetbrains.compose.web.renderComposable
+
+fun main() {
+    renderComposable(rootElementId = "root") {
+        // Minimal SPA shell
+        Div({ classes("container", "py-4") }) {
+            H1({ classes("display-6", "mb-3") }) { Text("Compose HTML SPA") }
+            P({ classes("lead") }) {
+                Text("This static site is powered by Compose for Web (JS-only) and Bootstrap 5.3.")
+            }
+
+            Hr()
+
+            // Example of interactive state to show SPA behavior
+            var count by remember { mutableStateOf(0) }
+            Div({ classes("d-flex", "gap-2", "align-items-center") }) {
+                Button(attrs = {
+                    classes("btn", "btn-primary")
+                    onClick { count++ }
+                }) { Text("Increment") }
+                Span({ classes("fw-bold") }) { Text("Count: $count") }
+            }
+        }
+    }
+}

site/src/jsMain/resources/index.html

@@ -0,0 +1,45 @@
+<!--
+  ~ Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Compose HTML SPA</title>
+    <!-- Bootstrap 5.3 CSS -->
+    <link
+      href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css"
+      rel="stylesheet"
+      integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH"
+      crossorigin="anonymous"
+    />
+  </head>
+  <body>
+    <div id="root"></div>
+
+    <!-- App bundle (produced by Kotlin/JS). The Gradle config forces this name. -->
+    <script src="site.js"></script>
+
+    <!-- Bootstrap 5.3 JS bundle (includes Popper) -->
+    <script
+      src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"
+      integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz"
+      crossorigin="anonymous"
+    ></script>
+  </body>
+  </html>