{version.MajorMinor(1, 29), NewExpressions},
				{version.MajorMinor(1, 29), StoredExpressions},
			},
			invalidExpressions: []string{"widget.x == 'buzz'"},
			activation:         map[string]any{"widget": map[string]any{"x": "buzz"}},
			opts: []VersionedOptions{
				{
					IntroducedVersion: version.MajorMinor(1, 28),
					RemovedVersion:    version.MajorMinor(1, 29),

	},
	{
		IntroducedVersion: version.MajorMinor(1, 27),
		EnvOptions: []cel.EnvOption{
			library.Authz(),
		},
	},
	{
		IntroducedVersion: version.MajorMinor(1, 28),
		EnvOptions: []cel.EnvOption{
			cel.CrossTypeNumericComparisons(true),
			cel.OptionalTypes(),
			library.Quantity(),
		},
	},
	// add the new validator in 1.29
	{
		IntroducedVersion: version.MajorMinor(1, 29),
		EnvOptions: []cel.EnvOption{

	}

	var v unix.Utsname
	err := unix.Uname(&v)
	if err != nil {
		telemetry.Inc(fmt.Sprintf("go/platform/host/%s/version:unknown-uname-error", runtime.GOOS))
		return
	}
	major, minor, ok := majorMinor(convert(v.Release[:]))
	if runtime.GOOS == "aix" {
		major, minor, ok = convert(v.Version[:]), convert(v.Release[:]), true
	}
	if !ok {

func mustCreateEnv(t testing.TB, envOptions ...cel.EnvOption) *cel.Env {
	envSet, err := environment.MustBaseEnvSet(environment.DefaultCompatibilityVersion(), true).
		Extend(environment.VersionedOptions{
			IntroducedVersion: version.MajorMinor(1, 30),
			EnvOptions:        envOptions,
		})
	if err != nil {
		t.Fatalf("fail to create env set: %v", err)
	}
	env, err := envSet.Env(environment.StoredExpressions)
	if err != nil {

			// options should always be present.
			IntroducedVersion: version.MajorMinor(1, 0),
			EnvOptions: []cel.EnvOption{
				cel.Variable(ScopedVarName, scopedType.CelType()),
			},
			DeclTypes: []*apiservercel.DeclType{
				scopedType,
			},
		},
		environment.VersionedOptions{
			IntroducedVersion: version.MajorMinor(1, 24),
			EnvOptions: []cel.EnvOption{

	env, err := environment.MustBaseEnvSet(environment.DefaultCompatibilityVersion(), true).Extend(
		environment.VersionedOptions{
			IntroducedVersion: version.MajorMinor(1, 26),
			EnvOptions: []cel.EnvOption{
				cel.Variable("foo", fooType.CelType()),
				cel.Variable("bar", barType.CelType()),
			},
			DeclTypes: []*apiservercel.DeclType{
				fooType,
				barType,

	envSet, err := environment.MustBaseEnvSet(environment.DefaultCompatibilityVersion(), true).
		Extend(environment.VersionedOptions{
			IntroducedVersion: version.MajorMinor(1, 30),
			EnvOptions:        envOptions,
		})
	if err != nil {
		t.Fatalf("fail to create env set: %v", err)
	}
	env, err := envSet.Env(environment.StoredExpressions)
	if err != nil {

// a new environment must be created for each MustBaseEnvSet call.
func BenchmarkLoadBaseEnvDifferentVersions(b *testing.B) {
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		MustBaseEnvSet(version.MajorMinor(1, uint(i)), true)
	}
}

// TestLibraryCoverage lints the management of libraries in baseOpts by
// checking for:
//
//   - No gaps and overlap in library inclusion, including when libraries are version bumped

	variablesType.Fields = make(map[string]*apiservercel.DeclField)
	envSet, err := environment.MustBaseEnvSet(environment.DefaultCompatibilityVersion(), true).Extend(
		environment.VersionedOptions{
			IntroducedVersion: version.MajorMinor(1, 28),
			EnvOptions: []cel.EnvOption{
				cel.Variable("variables", variablesType.CelType()),
			},
			DeclTypes: []*apiservercel.DeclType{
				variablesType,
			},
		})
	if err != nil {

					environment.VersionedOptions{
						// Feature epoch was actually 1.26, but we artificially set it to 1.0 because these
						// options should always be present.
						IntroducedVersion: version.MajorMinor(1, 0),
						EnvOptions:        envOpts,
						DeclTypes: []*apiservercel.DeclType{
							namespaceType,
							requestType,
						},
					},
				)
				if err != nil {