chore: use Java -release 8, Kotlin apiVersion=1.4 (support Gradle 7+)

Author: vlsi

build.gradle.kts

@@ -17,7 +17,9 @@
 import org.gradle.plugins.ide.idea.model.IdeaProject
 import org.jetbrains.gradle.ext.CopyrightConfiguration
 import org.jetbrains.gradle.ext.ProjectSettings
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
+import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 plugins {
     id("com.gradle.plugin-publish") apply false
@@ -67,13 +69,17 @@ allprojects {
     plugins.withId("java") {
         configure<JavaPluginExtension> {
             withSourcesJar()
-            sourceCompatibility = JavaVersion.VERSION_1_8
-            targetCompatibility = JavaVersion.VERSION_1_8
+        }
+        tasks.withType<JavaCompile>().configureEach {
+            options.release.set(8)
         }
     }
-    tasks.withType<KotlinCompile> {
-        kotlinOptions {
-            jvmTarget = "1.8"
+    tasks.withType<KotlinJvmCompile>().configureEach {
+        compilerOptions {
+            freeCompilerArgs.add("-Xjdk-release=8")
+            @Suppress("DEPRECATION")
+            apiVersion.set(KotlinVersion.KOTLIN_1_4)
+            jvmTarget = JvmTarget.JVM_1_8
         }
     }
 }
@@ -113,8 +119,35 @@ allprojects {
         // Ensure builds are reproducible
         isPreserveFileTimestamps = false
         isReproducibleFileOrder = true
-        dirMode = "775".toInt(8)
-        fileMode = "664".toInt(8)
+        dirPermissions {
+            user {
+                read = true
+                write = true
+                execute = true
+            }
+            group {
+                read = true
+                write = true
+                execute = true
+            }
+            other {
+                read = true
+                execute = true
+            }
+        }
+        filePermissions {
+            user {
+                read = true
+                write = true
+            }
+            group {
+                read = true
+                write = true
+            }
+            other {
+                read = true
+            }
+        }
     }
 }
 

plugins/gradle-extensions-plugin/src/test/kotlin/com/github/vlsi/gradle/ErrorReportingTest.kt

@@ -16,7 +16,6 @@
  */
 package com.github.vlsi.gradle
 
-import org.gradle.api.JavaVersion
 import org.junit.jupiter.api.Assertions
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.Arguments
@@ -27,23 +26,10 @@ class ErrorReportingTest : BaseGradleTest() {
         @JvmStatic
         private fun gradleVersionAndSettings(): Iterable<Arguments> {
             return mutableListOf<Arguments>().apply {
-                if (JavaVersion.current() <= JavaVersion.VERSION_1_8) {
-                    add(Arguments.of("4.9"))
-                }
-                if (JavaVersion.current() <= JavaVersion.VERSION_12) {
-                    addAll(
-                        listOf(
-                            Arguments.of("5.6.2"),
-                            Arguments.of("4.10.2")
-                        )
-                    )
-                }
-                if (JavaVersion.current() < JavaVersion.VERSION_17) {
-                    add(Arguments.of("6.0"))
-                    add(Arguments.of("6.8"))
-                    add(Arguments.of("7.6.1"))
-                }
-                add(Arguments.of("8.0.2"))
+                add(Arguments.of("7.0"))
+                add(Arguments.of("7.5"))
+                add(Arguments.of("8.0"))
+                add(Arguments.of("8.14.1"))
             }
         }
     }

plugins/jandex-plugin/src/test/kotlin/com/github/vlsi/jandex/JandexPluginTest.kt

@@ -36,11 +36,9 @@ class JandexPluginTest : BaseGradleTest() {
         private fun gradleVersionAndSettings(): Iterable<Arguments> {
             if (!isCI) {
                 // Use only the minimum supported Gradle version to make the test faster
-                return listOf(arguments("6.0", ConfigurationCache.OFF))
+                return listOf(arguments("7.0", ConfigurationCache.ON))
             }
             return mutableListOf<Arguments>().apply {
-                add(arguments("6.0", ConfigurationCache.OFF))
-                add(arguments("6.5", ConfigurationCache.OFF))
                 add(arguments("7.0", ConfigurationCache.ON))
                 add(arguments("7.4.2", ConfigurationCache.ON))
                 // Configuration cache supports custom caches since 7.5 only: https://github.com/gradle/gradle/issues/14874

plugins/stage-vote-release-plugin/src/test/kotlin/release/ChecksumFileTest.kt

@@ -38,11 +38,10 @@ class ChecksumFileTest : BaseGradleTest() {
                 return listOf(Arguments.arguments("8.1.1", ConfigurationCache.OFF))
             }
             return mutableListOf<Arguments>().apply {
-                add(Arguments.arguments("6.0", ConfigurationCache.OFF))
-                add(Arguments.arguments("6.5", ConfigurationCache.OFF))
                 add(Arguments.arguments("7.0", ConfigurationCache.OFF))
-                add(Arguments.arguments("7.4.2", ConfigurationCache.OFF))
+                add(Arguments.arguments("7.5", ConfigurationCache.OFF))
                 add(Arguments.arguments("8.1.1", ConfigurationCache.OFF))
+                add(Arguments.arguments("8.14.1", ConfigurationCache.OFF))
             }
         }
     }