import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;

/**
 * Interface to manage the project state and artifacts during the Maven build lifecycle.
 * This service provides operations to:
 * <ul>
 *   <li>Manage project artifacts (main and attached)</li>
 *   <li>Handle source roots and resources</li>
 *   <li>Access and modify project properties</li>

<toolchains>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.5</version>
         <vendor>sun</vendor>
     </provides>
     <configuration>
        <jdkHome>${env.JAVA_HOME}</jdkHome>
     </configuration>
  </toolchain>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.6</version>
         <vendor>sun</vendor>
     </provides>
     <configuration>

-->

<toolchains>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.5</version>
         <vendor>sun</vendor>
     </provides>
     <configuration>
        <jdkHome>${env.JAVA_HOME}</jdkHome>
        <toolsJar>lib/tools.jar</toolsJar>
     </configuration>
  </toolchain>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.6</version>
         <vendor>sun</vendor>

 * limitations under the License.
 */

package gradlebuild.identity.provider

import gradlebuild.identity.tasks.BuildReceipt
import org.gradle.api.Describable
import org.gradle.api.provider.Property
import org.gradle.api.provider.ValueSource
import org.gradle.api.provider.ValueSourceParameters
import org.gradle.api.tasks.Optional

            applyDefaultSettings(artifactRuleOverride = "")

            params {
                // Disable jdk-provider-plugin, otherwise the JAVA_HOME will be overwritten
                // https://github.com/gradle/teamcity-jdk-provider-plugin/blob/main/teamcity-jdk-provider-plugin-agent/src/main/kotlin/org/gradle/teamcity_jdk_provider_plugin/JdkProviderAgentLifecycleListener.kt#L22

        Object qualifier = key.getAnnotation() instanceof Named n ? n.value() : key.getAnnotation();
        org.apache.maven.di.Key<T> k =
                org.apache.maven.di.Key.ofType(key.getTypeLiteral().getType(), qualifier);
        return scope(k, unscoped::get)::get;
    }

    public static <T> Provider<T> seededKeyProvider(Class<? extends T> clazz) {

import org.gradle.api.Named
import org.gradle.api.Project
import org.gradle.api.file.Directory
import org.gradle.api.file.DirectoryProperty
import org.gradle.api.file.FileCollection
import org.gradle.api.provider.Property
import org.gradle.api.provider.Provider
import org.gradle.api.services.BuildService
import org.gradle.api.tasks.Classpath
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.Nested

And then, that system (in this case **FastAPI**) will take care of doing whatever is needed to provide your code with those needed dependencies ("inject" the dependencies).

This is very useful when you need to:

* Have shared logic (the same code logic again and again).
* Share database connections.

 */

package gradlebuild.basics.util

import org.gradle.api.NamedDomainObjectProvider
import org.gradle.api.artifacts.Configuration
import org.gradle.api.provider.Provider
import java.io.File

fun Configuration.getSingleFileProvider(): Provider<File> {
    val name = this.name
    return incoming.files.elements.map {
        require(it.size <= 1) {

-->

<toolchains>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.4</version>
         <vendor>sun</vendor>
         <!-- no id, so it's considered 'default' -->
     </provides>
     <configuration>
        <jdkHome>${env.JAVA_HOME}</jdkHome>
     </configuration>
  </toolchain>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.7</version>
         <vendor>ibm</vendor>