// attribute that doesn't have a precedence in consumer
                (x): "x",
                // attribute that has a lower precedence than the next one
                (c): AttributeTestUtil.named(ConcreteNamed, "c"),
                // attribute with the highest precedence
                (a): flavor("a"),
                // attribute that doesn't have a precedence
                (Attribute.of("z", String)): "z"

            if (!precedence.add(attribute)) {
                throw new IllegalArgumentException(String.format("Attribute '%s' precedence has already been set.", attribute.getName()));
            }
        }
    }

    @Override
    public void setAttributeDisambiguationPrecedence(List<Attribute<?>> attributes) {
        precedence.clear();

        controller.loadGradlePropertiesFrom(new File('b'), true)

        then:
        thrown(IllegalStateException)
    }

    def "environment variables have precedence over project properties"() {
        given:
        def settingsDir = new File("settingsDir")
        def gradleUserHomePropertiesFile = propertiesFileFromDir(gradleUserHome)

    a. If the attribute has a known precedence, Gradle will stop as soon as there is a single candidate remaining.
    b. After all extra attributes with precedence are considered, the remaining candidates can be chosen if they are compatible with all of the non-ordered disambiguation rules.

        // We need to take the existing requested attributes and sort them in "precedence" order
        // This returns a structure that tells us the order of requestedAttributes by their index in
        // requestedAttributes.
        //
        // If the requested attributes are [ A, B, C ]
        // If the attribute precedence is [ C, A ]
        // The indices are [ A: 0, B: 1, C: 2 ]

			proxy: newMeta("test-ns", nil, nil),
			expected: &meshconfig.ProxyConfig{
				Concurrency: v(3),
				Image: &v1beta1.ProxyImage{
					ImageType: "debug",
				},
			},
		},
		{
			name: "CR takes precedence over meshConfig.defaultConfig",
			configs: []config.Config{
				newProxyConfig("ns", istioRootNamespace,
					&v1beta1.ProxyConfig{
						Concurrency: v(3),
					}),
			},

If you enable auto-detection in your build, custom toolchains extend the set of toolchain locations.
Gradle picks a toolchain according to the <<sec:precedence,precedence rules>>.
====

[[sec:precedence]]
== Toolchain installations precedence

Gradle will sort all the JDK/JRE installations matching the toolchain specification of the build and will pick the first one.
Sorting is done based on the following rules:

  // `config.calibration_options.representative_datasets` and
  // `config.static_range_ptq_preset.representative_datasets` are both
  // specified. In this case, the one set to the `calibration_options` takes
  // precedence.
  QuantizationConfig config{};
  RepresentativeDatasetConfig& top_level_dataset_config =
      *config.mutable_calibration_options()->add_representative_datasets();

        war.assertContainsFile('META-INF/MANIFEST.MF')
        war.assertContainsFile('WEB-INF/webinf1/file1.txt')
        war.assertContainsFile('WEB-INF/dir2/file2.txt')
    }

    def "exclude duplicates: webXml precedence over webInf"() {
        given:
        createDir('bad') {
            file('web.xml')
        }
        file('good.xml')

        file('bad/web.xml').text = 'bad'
        file('good.xml').text = 'good'

     * defined precedence onto each other to achieve proper precedence. Precedence is defined as:
     * <ul>
     *     <li>System properties (lowest precedence)</li>
     *     <li>Project properties (optional)</li>
     *     <li>User properties (highest precedence)</li>
     * </ul>