Raise minimum supported version of Gradle

Closes gh-41180

Author: wilkinsona

buildSrc/src/main/java/org/springframework/boot/build/MavenPublishingConventions.java

@@ -102,9 +102,6 @@ private void customizePom(MavenPom pom, Project project) {
 
 	private void customizeJavaMavenPublication(MavenPublication publication, Project project) {
 		addMavenOptionalFeature(publication, project);
-		if (publication.getName().equals("pluginMaven")) {
-			return;
-		}
 		publication.versionMapping((strategy) -> strategy.usage(Usage.JAVA_API, (mappingStrategy) -> mappingStrategy
 			.fromResolutionOf(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME)));
 		publication.versionMapping(

spring-boot-project/spring-boot-docs/src/docs/antora/modules/ROOT/pages/installing.adoc

@@ -49,7 +49,7 @@ More details on getting started with Spring Boot and Maven can be found in the x
 [[getting-started.installing.java.gradle]]
 === Gradle Installation
 
-Spring Boot is compatible with Gradle 7.x (7.5 or later) and 8.x.
+Spring Boot is compatible with Gradle 7.x (7.6.4 or later) or 8.x (8.3 or later).
 If you do not already have Gradle installed, you can follow the instructions at https://gradle.org.
 
 Spring Boot dependencies can be declared by using the `org.springframework.boot` `group`.

spring-boot-project/spring-boot-docs/src/docs/antora/modules/ROOT/pages/system-requirements.adoc

@@ -13,7 +13,7 @@ Explicit build support is provided for the following build tools:
 | 3.6.3 or later
 
 | Gradle
-| 7.x (7.5 or later) and 8.x
+| Gradle 7.x (7.6.4 or later) or 8.x (8.3 or later)
 |===
 
 

spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/build.gradle

@@ -6,23 +6,6 @@ plugins {
 
 description = "Spring Boot Buildpack Platform"
 
-configurations.all {
-	resolutionStrategy {
-		eachDependency { dependency ->
-			// Downgrade Jackson as Gradle cannot cope with 2.15.0's multi-version
-			// jar files with bytecode in META-INF/versions/19
-			if (dependency.requested.group.startsWith("com.fasterxml.jackson")) {
-				dependency.useVersion("2.14.2")
-			}
-			// Downgrade Spring Framework as Gradle cannot cope with 6.1.0-M1's
-			// multi-version jar files with bytecode in META-INF/versions/21
-			if (dependency.requested.group.equals("org.springframework")) {
-				dependency.useVersion("$springFramework60xVersion")
-			}
-		}
-	}
-}
-
 dependencies {
 	api("com.fasterxml.jackson.core:jackson-databind")
 	api("com.fasterxml.jackson.module:jackson-module-parameter-names")

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/build.gradle

@@ -15,53 +15,6 @@ configurations {
 		// Downgrade SLF4J is required for tests to run in Eclipse
 		resolutionStrategy.force("org.slf4j:slf4j-api:1.7.36")
 	}
-	modernGradleRuntimeClasspath {
-		extendsFrom runtimeClasspath
-		canBeConsumed = false
-		canBeResolved = true
-	}
-	modernGradleRuntimeElements {
-		extendsFrom configurations.implementation, configurations.runtimeOnly
-		canBeConsumed = true
-		canBeResolved = false
-		attributes {
-			attribute(Category.CATEGORY_ATTRIBUTE, project.objects.named(Category, Category.LIBRARY))
-			attribute(Bundling.BUNDLING_ATTRIBUTE, project.objects.named(Bundling, Bundling.EXTERNAL))
-			attribute(TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE, 17)
-			attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, project.objects.named(LibraryElements, LibraryElements.JAR))
-			attribute(Usage.USAGE_ATTRIBUTE, project.objects.named(Usage, Usage.JAVA_RUNTIME))
-			attribute(GradlePluginApiVersion.GRADLE_PLUGIN_API_VERSION_ATTRIBUTE, project.objects.named(GradlePluginApiVersion, "8.7"))
-		}
-		outgoing.artifacts.addAll(configurations.runtimeElements.outgoing.artifacts)
-	}
-	runtimeElements {
-		attributes {
-			attribute(GradlePluginApiVersion.GRADLE_PLUGIN_API_VERSION_ATTRIBUTE, project.objects.named(GradlePluginApiVersion, "7.5"))
-		}
-	}
-	all { configuration ->
-		if (configuration.name == 'modernGradleRuntimeClasspath') {
-			return
-		}
-		resolutionStrategy {
-			eachDependency { dependency ->
-				// Downgrade Jackson as Gradle cannot cope with 2.15.0's multi-version
-				// jar files with bytecode in META-INF/versions/19
-				if (dependency.requested.group.startsWith("com.fasterxml.jackson")) {
-					dependency.useVersion("2.14.2")
-				}
-				// Downgrade Spring Framework as Gradle cannot cope with 6.1.0-M1's
-				// multi-version jar files with bytecode in META-INF/versions/21
-				if (dependency.requested.group.equals("org.springframework")) {
-					dependency.useVersion("$springFramework60xVersion")
-				}
-			}
-		}
-	}
-}
-
-components.java.addVariantsFromConfiguration(configurations.modernGradleRuntimeElements) {
-	mapToMavenScope("runtime")
 }
 
 dependencies {
@@ -178,18 +131,3 @@ artifacts {
 toolchain {
 	maximumCompatibleJavaVersion = JavaLanguageVersion.of(20)
 }
-
-publishing {
-	publications.matching { it.name == 'pluginMaven' }.configureEach {
-		versionMapping {
-			allVariants {
-				fromResolutionOf(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME)
-			}
-		}
-		versionMapping {
-			variant(GradlePluginApiVersion.GRADLE_PLUGIN_API_VERSION_ATTRIBUTE, project.objects.named(GradlePluginApiVersion, "8.7")) {
-				fromResolutionOf("modernGradleRuntimeClasspath")
-			}
-		}
-	}
-}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/pages/introduction.adoc

@@ -3,6 +3,6 @@
 
 The Spring Boot Gradle Plugin provides Spring Boot support in https://gradle.org[Gradle].
 It allows you to package executable jar or war archives, run Spring Boot applications, and use the dependency management provided by `spring-boot-dependencies`.
-Spring Boot's Gradle plugin requires Gradle 7.x (7.5 or later) or 8.x and can be used with Gradle's {url-gradle-docs}/configuration_cache.html[configuration cache].
+Spring Boot's Gradle plugin requires Gradle 7.x (7.6.4 or later) or 8.x (8.3 or later) and can be used with Gradle's {url-gradle-docs}/configuration_cache.html[configuration cache].
 
 In addition to this user guide, xref:api/java/index.html[API documentation] is also available.

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java

@@ -35,9 +35,9 @@ private GradleVersions() {
 	@SuppressWarnings("UnstableApiUsage")
 	public static List<String> allCompatible() {
 		if (isJavaVersion(JavaVersion.VERSION_20)) {
-			return Arrays.asList("8.1.1", "8.8");
+			return Arrays.asList("8.3", "8.8");
 		}
-		return Arrays.asList("7.5.1", GradleVersion.current().getVersion(), "8.0.2", "8.8");
+		return Arrays.asList(GradleVersion.current().getVersion(), "8.3", "8.8");
 	}
 
 	public static String minimumCompatible() {

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/build.gradle

@@ -21,17 +21,6 @@ configurations {
 		extendsFrom dependencyManagement
 		transitive = false
 	}
-	all {
-		resolutionStrategy {
-			eachDependency { dependency ->
-				// Downgrade Spring Framework as Gradle cannot cope with 6.1.0-M1's
-				// multi-version jar files with bytecode in META-INF/versions/21
-				if (dependency.requested.group.equals("org.springframework")) {
-					dependency.useVersion("$springFramework60xVersion")
-				}
-			}
-		}
-	}
 }
 
 dependencies {

spring-boot-system-tests/spring-boot-image-tests/build.gradle

@@ -11,22 +11,6 @@ configurations {
 	providedRuntime {
 		extendsFrom dependencyManagement
 	}
-	all {
-		resolutionStrategy {
-			eachDependency { dependency ->
-				// Downgrade Jackson as Gradle cannot cope with 2.15.0's multi-version
-				// jar files with bytecode in META-INF/versions/19
-				if (dependency.requested.group.startsWith("com.fasterxml.jackson")) {
-					dependency.useVersion("2.14.2")
-				}
-				// Downgrade Spring Framework as Gradle cannot cope with 6.1.0-M1's
-				// multi-version jar files with bytecode in META-INF/versions/21
-				if (dependency.requested.group.equals("org.springframework")) {
-					dependency.useVersion("$springFramework60xVersion")
-				}
-			}
-		}
-	}
 }
 
 task syncMavenRepository(type: Sync) {