// IsPrimary returns true if this is a primary cluster, containing an instance
	// of the Istio control plane.
	IsPrimary() bool

	// IsConfig returns true if this is a config cluster, used as the source of
	// Istio config for one or more control planes.
	IsConfig() bool

	// IsRemote returns true if this is a remote cluster, which uses a control plane
	// residing in another cluster.
	IsRemote() bool

particularly the waypoint, can specify which control plane they connect to (and by inference what version of the data plane they will run) using the `istio.io/rev` label set to a tag or revision.

As in sidecar mode, every control plane installation may (and should) include a revision name, which is a stable identifier for that control plane installation and version.  For simplicity, we recommend using the version of the control plane as the revision name (see [./istio/control-plane-apps...

Mitch Connors <******@****.***> 1699062890 -0700

	"slices"
	"sync"
)

type gitHandler struct {
	once       sync.Once
	gitPath    string
	gitPathErr error
}

func (h *gitHandler) Available() bool {
	if runtime.GOOS == "plan9" {
		// The Git command is usually not the real Git on Plan 9.
		// See https://golang.org/issues/29640.
		return false
	}
	h.once.Do(func() {
		h.gitPath, h.gitPathErr = exec.LookPath("git")
	})
	return h.gitPathErr == nil
}

	fmt.Fprintln(w, "// of continuous tones.")
	fmt.Fprintln(w, "//")
	fmt.Fprintln(w, "// This palette was used in the Plan 9 Operating System, described at")
	fmt.Fprintln(w, "// https://9p.io/magic/man2html/6/color")
	fmt.Fprintln(w, "var Plan9 = []color.Color{")
	for _, line := range lines {
		fmt.Fprintln(w, line)
	}
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w)
}

type revisionedNamespace struct {
	revision  string
	namespace namespace.Instance
}

// TestMultiVersionRevision tests traffic between data planes running under differently versioned revisions
// should test all possible revisioned namespace pairings to test traffic between all versions
func TestMultiVersionRevision(t *testing.T) {
	// nolint: staticcheck

        "lunchroom",
        "sort",
        "building",
        "fact",
        "grass",
        "planes",
        "stove",
        "pull",
        "calculator",
        "suggestion",
        "beginner",
        "plough",
        "insurance",
        "hat",
        "toys",
        "plant",
        "trail",
        "wing",
        "ring",
        "desk",
        "yak",
        "teaching",

		return
	}

	symSize = 0
	spSize = 0
	lcSize = 0

	switch ctxt.HeadType {
	default:
		panic("unknown platform")

	// Macho
	case objabi.Hdarwin:
		asmbMacho(ctxt)

	// Plan9
	case objabi.Hplan9:
		asmbPlan9(ctxt)

	// PE
	case objabi.Hwindows:
		asmbPe(ctxt)

	// Xcoff
	case objabi.Haix:
		asmbXcoff(ctxt)

	// Elf
	case objabi.Hdragonfly,

			cfg.SystemNamespace = userGroup1NS.Name()
			cfg.ControlPlaneValues = fmt.Sprintf(`
namespace: %s
revision: usergroup-1
meshConfig:
  # REGISTRY_ONLY on one control plane is used to verify custom resources scoping
  outboundTrafficPolicy:
    mode: REGISTRY_ONLY
  # CR scoping requires discoverySelectors to be configured
  discoverySelectors:
    - matchLabels:

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Plan 9 directory marshalling. See intro(5).

package plan9

import "errors"

var (
	ErrShortStat = errors.New("stat buffer too short")
	ErrBadStat   = errors.New("malformed stat buffer")
	ErrBadName   = errors.New("bad character in file name")
)