else -> null
    }

    override fun getSystemProperties(): Environment.Properties =
        DefaultProperties(System.getProperties().uncheckedCast())

    override fun getVariables(): Environment.Properties =
        DefaultProperties(System.getenv())

    internal
    open class DefaultProperties(val map: Map<String, String>) : Environment.Properties {
        override fun byNamePrefix(prefix: String): Map<String, String?> =

        where:
        systemPropsCleaner                       | _
        'System.properties.clear()'              | _
        'System.properties.keySet().clear()'     | _
        'System.properties.entrySet().clear()'   | _
        'System.setProperties(new Properties())' | _
    }

    def "system property removed after update at the configuration phase is removed when running from cache"() {

methods\ that\ are\ mutable\ public\ API\ properties\ and\ do\ not\ have\ raw\ return\ type\ org.gradle.api.resources.TextResource\ and\ do\ not\ have\ raw\ return\ type\ assignable\ to\ org.gradle.api.file.FileCollection\ should\ have\ return\ type\ Provider=public-api-mutable-properties.txt

    def "invalidates cache upon change to #inputName used by included build"() {

        assumeFalse(
            'property from gradle.properties is not available to included build',
            inputName == 'gradle.properties'
        )

        given:
        def configurationCache = newConfigurationCacheFixture()
        def fixture = new BuildLogicChangeFixture(file('build-logic'))

import org.gradle.internal.fingerprint.LineEndingSensitivity
import org.gradle.internal.properties.InputBehavior
import org.gradle.internal.properties.InputFilePropertyType
import org.gradle.internal.properties.OutputFilePropertyType
import org.gradle.internal.properties.PropertyValue
import org.gradle.internal.properties.PropertyVisitor
import org.gradle.internal.serialize.graph.Codec

    }

    def "invalidates cache upon change to #inputName used by buildSrc"() {

        assumeFalse(
            'property from gradle.properties is not available to buildSrc',
            inputName == 'gradle.properties'
        )

        given:
        def configurationCache = newConfigurationCacheFixture()
        file("buildSrc/build.gradle.kts").text = """

        origin            | argument
        "long option"     | ENABLE_CLI_OPT
        "system property" | ENABLE_SYS_PROP
    }

    def "can enable with a property in root directory gradle.properties"() {
        given:
        file('gradle.properties') << """
            $ENABLE_GRADLE_PROP
        """

        when:
        run 'help'

        then:
        fixture.assertStateStored()

        when:

        configurationCache.assertStateStored()
        outputContains "because the set of Gradle properties has changed."

        where:
        dynamicPropertyExpression << [
            'gradleProp',
            'ext.gradleProp'
        ]
    }

    @Issue("https://github.com/gradle/gradle/issues/19793")
    def "gradle properties must be accessible from task in #build"() {
        given:

        Path userHome = Paths.get(properties.get("user.home"));
        Path mavenUserHome = userHome.resolve(".m2");
        Path mavenSystemHome = properties.containsKey("maven.home")
                ? Paths.get(properties.get("maven.home"))
                : properties.containsKey("env.MAVEN_HOME") ? Paths.get(properties.get("env.MAVEN_HOME")) : null;

          "unit": "short"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "Replication Errors"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "light-red",
                  "mode": "fixed"
                }
              }