diff --git a/Makefile b/Makefile
index 41ffd3dc5..5ba6f1f29 100644
--- a/Makefile
+++ b/Makefile
@@ -79,6 +79,11 @@ $(MYGOBIN)/gorepomod:
 	cd cmd/gorepomod; \
 	go install .
 
+# Build from local source.
+$(MYGOBIN)/k8scopy:
+	cd cmd/k8scopy; \
+	go install .
+
 # Build from local source.
 $(MYGOBIN)/pluginator:
 	cd cmd/pluginator; \
@@ -98,13 +103,13 @@ $(MYGOBIN)/kustomize:
 install-tools: \
 	$(MYGOBIN)/goimports \
 	$(MYGOBIN)/golangci-lint-kustomize \
-	$(MYGOBIN)/gh \
 	$(MYGOBIN)/gorepomod \
+	$(MYGOBIN)/helm \
+	$(MYGOBIN)/k8scopy \
 	$(MYGOBIN)/mdrip \
 	$(MYGOBIN)/pluginator \
 	$(MYGOBIN)/prchecker \
-	$(MYGOBIN)/stringer \
-	$(MYGOBIN)/helm
+	$(MYGOBIN)/stringer
 
 ### Begin kustomize plugin rules.
 #
@@ -221,7 +226,7 @@ build-kustomize-api: $(builtinplugins)
 	cd api; go build ./...
 
 .PHONY: generate-kustomize-api
-generate-kustomize-api:
+generate-kustomize-api: $(MYGOBIN)/k8scopy
 	cd api; go generate ./...
 
 .PHONY: test-unit-kustomize-api
diff --git a/cmd/k8scopy/go.mod b/cmd/k8scopy/go.mod
new file mode 100644
index 000000000..36b3c8548
--- /dev/null
+++ b/cmd/k8scopy/go.mod
@@ -0,0 +1,8 @@
+module sigs.k8s.io/kustomize/cmd/k8scopy
+
+go 1.15
+
+require (
+	github.com/stretchr/testify v1.4.0
+	sigs.k8s.io/yaml v1.2.0
+)
diff --git a/cmd/k8scopy/go.sum b/cmd/k8scopy/go.sum
new file mode 100644
index 000000000..363b8adf2
--- /dev/null
+++ b/cmd/k8scopy/go.sum
@@ -0,0 +1,15 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
diff --git a/cmd/k8scopy/internal/copier.go b/cmd/k8scopy/internal/copier.go
new file mode 100644
index 000000000..9f422d3fd
--- /dev/null
+++ b/cmd/k8scopy/internal/copier.go
@@ -0,0 +1,111 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package internal
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const (
+	sigsK8sIo = "sigs.k8s.io"
+)
+
+type Copier struct {
+	spec       *ModuleSpec
+	goModCache string
+	topPackage string
+	srcDir     string
+	pgmName    string
+}
+
+func (c Copier) replacementPath() string {
+	return filepath.Join(c.topPackage, c.subPath())
+}
+
+func (c Copier) subPath() string {
+	return filepath.Join("internal", c.pgmName)
+}
+
+func (c Copier) print() {
+	fmt.Printf("   apiMachineryModule: %s\n", c.spec.Module)
+	fmt.Printf("      replacementPath: %s\n", c.replacementPath())
+	fmt.Printf("           goModCache: %s\n", c.goModCache)
+	fmt.Printf("           topPackage: %s\n", c.topPackage)
+	fmt.Printf("              subPath: %s\n", c.subPath())
+	fmt.Printf("               srcDir: %s\n", c.srcDir)
+	fmt.Printf("  apiMachineryModSpec: %s\n", c.spec.Name())
+	fmt.Printf("              pgmName: %s\n", c.pgmName)
+	fmt.Printf("                  pwd: %s\n", os.Getenv("PWD"))
+}
+
+func NewCopier(s *ModuleSpec) Copier {
+	tmp := Copier{
+		spec:       s,
+		pgmName:    os.Getenv("GOPACKAGE"),
+		goModCache: RunGetOutputCommand("go", "env", "GOMODCACHE"),
+	}
+	goMod := RunGetOutputCommand("go", "env", "GOMOD")
+	topPackage := filepath.Join(goMod[:len(goMod)-len("go.mod")-1], "yaml")
+	k := strings.Index(topPackage, sigsK8sIo)
+	if k < 1 {
+		log.Fatalf("cannot find %s in %s", sigsK8sIo, topPackage)
+	}
+	tmp.srcDir = topPackage[:k-1]
+	tmp.topPackage = topPackage[k:]
+	return tmp
+}
+
+func (c Copier) CopyFile(dir, name string) error {
+	inFile, err := os.Open(
+		filepath.Join(c.goModCache, c.spec.Name(), dir, name))
+	if err != nil {
+		return err
+	}
+	defer inFile.Close()
+	scanner := bufio.NewScanner(inFile)
+
+	w, err := newWriter(dir, name)
+	if err != nil {
+		return err
+	}
+	defer w.close()
+
+	w.write(
+		fmt.Sprintf(
+			// This particular phrasing is required.
+			"// Code generated by %s/generator from %s; DO NOT EDIT.",
+			c.pgmName, c.spec.Name()))
+	w.write(
+		fmt.Sprintf(
+			"// Copied from %s\n",
+			filepath.Join(c.spec.Name(), dir, name)))
+
+	for scanner.Scan() {
+		l := scanner.Text()
+		// Disallow recursive generation.
+		if strings.HasPrefix(l, "//go:generate") {
+			continue
+		}
+		// Don't want it to appear double generated.
+		if strings.HasPrefix(l, "// Code generated") {
+			continue
+		}
+		// Fix self-imports.
+		l = strings.Replace(l, c.spec.Module, c.replacementPath(), 1)
+		// Replace klog with generic log (eschewing k8s.io entirely).
+		l = strings.Replace(l, "\"k8s.io/klog\"", "\"log\"", 1)
+		l = strings.Replace(l, "klog.V(10).Infof(", "log.Printf(", 1)
+		w.write(l)
+	}
+	if err := scanner.Err(); err != nil {
+		return err
+	}
+	w.write("")
+	return nil
+}
diff --git a/cmd/k8scopy/internal/modulespec.go b/cmd/k8scopy/internal/modulespec.go
new file mode 100644
index 000000000..d6d9be9b7
--- /dev/null
+++ b/cmd/k8scopy/internal/modulespec.go
@@ -0,0 +1,37 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package internal
+
+import (
+	"io/ioutil"
+
+	"sigs.k8s.io/yaml"
+)
+
+type ModuleSpec struct {
+	Module   string        `json:"module,omitempty" yaml:"module,omitempty"`
+	Version  string        `json:"version,omitempty" yaml:"version,omitempty"`
+	Packages []PackageSpec `json:"packages,omitempty" yaml:"packages,omitempty"`
+}
+
+func (s ModuleSpec) Name() string {
+	return s.Module + "@" + s.Version
+}
+
+type PackageSpec struct {
+	Name  string   `json:"name,omitempty" yaml:"name,omitempty"`
+	Files []string `json:"files,omitempty" yaml:"files,omitempty"`
+}
+
+func ReadSpec(fileName string) *ModuleSpec {
+	bytes, err := ioutil.ReadFile(fileName)
+	if err != nil {
+		panic(err)
+	}
+	var spec ModuleSpec
+	if err = yaml.Unmarshal(bytes, &spec); err != nil {
+		panic(err)
+	}
+	return &spec
+}
diff --git a/cmd/k8scopy/internal/modulespec_test.go b/cmd/k8scopy/internal/modulespec_test.go
new file mode 100644
index 000000000..c4d676504
--- /dev/null
+++ b/cmd/k8scopy/internal/modulespec_test.go
@@ -0,0 +1,65 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package internal_test
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	. "sigs.k8s.io/kustomize/cmd/k8scopy/internal"
+)
+
+var data = []byte(`module: k8s.io/apimachinery
+version: v0.17.0
+packages:
+- name: pkg/labels
+  files:
+  - labels.go
+  - selector.go
+  - zz_generated.deepcopy.go
+- name: pkg/selection
+  files:
+  - operator.go
+- name: pkg/util/sets
+  files:
+  - empty.go
+  - string.go
+- name: pkg/util/errors
+  files:
+  - errors.go
+- name: pkg/util/validation
+  files:
+  - validation.go
+- name: pkg/util/validation/field
+  files:
+  - errors.go
+  - path.go
+`)
+
+func TestReadSpec(t *testing.T) {
+	fn := writeFile(t, data)
+	defer os.Remove(fn)
+	x := ReadSpec(fn)
+	assert.Equal(t, "k8s.io/apimachinery@v0.17.0", x.Name())
+	assert.Equal(t, 6, len(x.Packages))
+	assert.Equal(t, "pkg/util/validation/field", x.Packages[5].Name)
+	assert.Equal(t, "path.go", x.Packages[5].Files[1])
+}
+
+// Write content to temp file, returning file name.
+func writeFile(t *testing.T, content []byte) string {
+	f, err := ioutil.TempFile("", "testjunk")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = f.Write(content); err != nil {
+		t.Fatal(err)
+	}
+	if err := f.Close(); err != nil {
+		t.Fatal(err)
+	}
+	return f.Name()
+}
diff --git a/cmd/k8scopy/internal/utils.go b/cmd/k8scopy/internal/utils.go
new file mode 100644
index 000000000..33904f163
--- /dev/null
+++ b/cmd/k8scopy/internal/utils.go
@@ -0,0 +1,32 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package internal
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os/exec"
+	"strings"
+)
+
+func RunNoOutputCommand(n string, args ...string) {
+	o := RunGetOutputCommand(n, args...)
+	if len(o) > 0 {
+		log.Fatalf("unexpected output: %q", o)
+	}
+}
+
+func RunGetOutputCommand(n string, args ...string) string {
+	cmd := exec.Command(n, args...)
+	var outBuf bytes.Buffer
+	cmd.Stdout = &outBuf
+	var errBuf bytes.Buffer
+	cmd.Stderr = &errBuf
+	if err := cmd.Run(); err != nil {
+		fmt.Printf("err: %q\n", errBuf.String())
+		log.Fatal(err)
+	}
+	return strings.TrimSpace(outBuf.String())
+}
diff --git a/cmd/k8scopy/internal/writer.go b/cmd/k8scopy/internal/writer.go
new file mode 100644
index 000000000..2d956ce26
--- /dev/null
+++ b/cmd/k8scopy/internal/writer.go
@@ -0,0 +1,40 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package internal
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+type writer struct {
+	root string
+	f    *os.File
+}
+
+func newWriter(toDir, name string) (*writer, error) {
+	if err := os.MkdirAll(toDir, 0755); err != nil {
+		log.Printf("unable to create directory: %s", toDir)
+		return nil, err
+	}
+	n := filepath.Join(toDir, name)
+	f, err := os.Create(n)
+	if err != nil {
+		return nil, fmt.Errorf("unable to create `%s`; %v", n, err)
+	}
+	return &writer{root: toDir, f: f}, nil
+}
+
+func (w *writer) close() {
+	w.f.Close()
+}
+
+func (w *writer) write(line string) {
+	if _, err := w.f.WriteString(line + "\n"); err != nil {
+		log.Printf("Trouble writing: %s", line)
+		log.Fatalf("Error: %s", err)
+	}
+}
diff --git a/cmd/k8scopy/main.go b/cmd/k8scopy/main.go
new file mode 100644
index 000000000..25d0faeac
--- /dev/null
+++ b/cmd/k8scopy/main.go
@@ -0,0 +1,54 @@
+// Copyright 2020 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// k8scopy is a code reuse mechanism for k8s.io code.
+//
+// kustomize, kyaml, cmd/config are kustomize repo modules that want to reuse
+// some small bits of k8s.io code. These modules cannot depend k8s.io via
+// normal Go import or vendoring because kubectl will depend on these things
+// eventually (see kubernetes-sigs/kustomize/issues/1500), and kubectl's code
+// reuse is tricky. While kubectl remains in the k/k repo, it depends on local
+// relative symlinked paths to a 'staging' version of k8s.io code.  No code
+// imported by kubectl can refer to any other version of k8s.io code, not by
+// Go importing, not by Go vendoring.
+//
+// This main exists to allow "go generate" to copy select k8s.io packages into
+// the kustomize repo at well defined tags in reproducible fashion.  It's
+// a form of vendoring reuse that avoids the problems created by k8s staging.
+// The copied code is labelled as generated and is not otherwise edited.
+//
+// When/if kubectl is finally extracted from k/k to its own repo, it can
+// depend on k8s.io code via normal imports, and then so can kustomize,
+// so this technique can be dropped.
+//
+// Until then, if a bug is found in a particular instance of copied k8s.io
+// (highly unlikely, since only old stable versions are copied), just update
+// the version being copied, re-generate, and if need be adjust call points.
+package main
+
+import (
+	"log"
+	"os"
+
+	"sigs.k8s.io/kustomize/cmd/k8scopy/internal"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatal("Need name of yaml file containing module specs.")
+	}
+	spec := internal.ReadSpec(os.Args[1])
+	c := internal.NewCopier(spec)
+	internal.RunNoOutputCommand("go", "get", spec.Name())
+	for _, p := range spec.Packages {
+		for _, n := range p.Files {
+			if err := c.CopyFile(p.Name, n); err != nil {
+				log.Fatal(err)
+			}
+		}
+	}
+	internal.RunNoOutputCommand(
+		"go", "mod", "edit", "-droprequire="+spec.Module)
+	internal.RunNoOutputCommand("go", "mod", "tidy")
+	internal.RunGetOutputCommand("go", "fmt", "./...")
+}
diff --git a/kyaml/yaml/internal/k8sgen/doc.go b/kyaml/yaml/internal/k8sgen/doc.go
index 60348506c..bc0eebd63 100644
--- a/kyaml/yaml/internal/k8sgen/doc.go
+++ b/kyaml/yaml/internal/k8sgen/doc.go
@@ -1,27 +1,7 @@
 // Copyright 2020 The Kubernetes Authors.
 // SPDX-License-Identifier: Apache-2.0
 
-// Package k8sgen contains code generated by copying bits of k8s.io code.
-// The copier is in generator/main.go.
-//
-// kyaml (and indirectly kustomize) wants to reuse the k/k label selection code.
-// Labels and annotations are a key part of k8s metadata.
-//
-// kyaml cannot depend on it via a normal Go import because kubectl will
-// depend on kyaml eventually (see kubernetes-sigs/kustomize/issues/1500).
-// While kubectl remains in the k/k repo, it depends on local relative symlinked
-// path to a 'staging' version of k8s.io code.  No code imported by kubectl can
-// refer to any other version of k8s.io code.
-//
-// So to do what that code does, kyaml must either reimplement it or copy it.
-// When/if kubectl is finally extracted from k/k to its own repo, it can
-// depend on apimachinery code via normal imports, and so can kyaml.
-// At that point, this copy (and copying mechanism) can be dropped.
-//
-// Until then, if a bug is found in a particular instance of copied k8s.io
-// (unlikely, since this code is old and stable), just increment
-// apiMachineryVersion below to match the fixed version, possibly change
-// the files copied, re-generate, and if need be adjust call points.
-//
-//go:generate go run generator/main.go
+// All code below this directory is generated.
+// See {repo}/cmd/k8scopy/main.go for more info.
+//go:generate k8scopy k8scopy.yaml
 package k8sgen
diff --git a/kyaml/yaml/internal/k8sgen/generator/go.mod b/kyaml/yaml/internal/k8sgen/generator/go.mod
deleted file mode 100644
index 55784a0f6..000000000
--- a/kyaml/yaml/internal/k8sgen/generator/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module sigs.k8s.io/kustomize/kyaml/yaml/internal/k8sgen/generator
-
-go 1.15
diff --git a/kyaml/yaml/internal/k8sgen/generator/main.go b/kyaml/yaml/internal/k8sgen/generator/main.go
deleted file mode 100644
index 74da985fb..000000000
--- a/kyaml/yaml/internal/k8sgen/generator/main.go
+++ /dev/null
@@ -1,213 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-// A code copier launched via `go generate`.
-// See k8segen/doc.go for further discussion.
-package main
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"log"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-)
-
-const (
-	// Splitting this so it doesn't show up in grep.
-	apiMachineryModule  = "k8s.io" + "/" + "apimachinery"
-	apiMachineryVersion = "v0.17.0"
-	sigsK8sIo           = "sigs.k8s.io"
-)
-
-var (
-	filesToCopy = map[string][]string{
-		filepath.Join("pkg", "labels"): {
-			"labels.go",
-			"selector.go",
-			"zz_generated.deepcopy.go",
-		},
-		filepath.Join("pkg", "selection"): {
-			"operator.go",
-		},
-		filepath.Join("pkg", "util", "sets"): {
-			"empty.go",
-			"string.go",
-		},
-		filepath.Join("pkg", "util", "errors"): {
-			"errors.go",
-		},
-		filepath.Join("pkg", "util", "validation"): {
-			"validation.go",
-		},
-		filepath.Join("pkg", "util", "validation", "field"): {
-			"errors.go",
-			"path.go",
-		},
-	}
-)
-
-func main() {
-	c := newCopier()
-	// c.print()
-	runNoOutputCommand("go", "get", c.apiMachineryModSpec())
-	for dir, files := range filesToCopy {
-		for _, n := range files {
-			if err := c.copyFile(dir, n); err != nil {
-				log.Fatal(err)
-			}
-		}
-	}
-	runNoOutputCommand(
-		"go", "mod", "edit", "-droprequire="+apiMachineryModule)
-	runNoOutputCommand("go", "mod", "tidy")
-	runGetOutputCommand("go", "fmt", "./...")
-}
-
-type copier struct {
-	goModCache string
-	topPackage string
-	srcDir     string
-	pgmName    string
-}
-
-func (c copier) apiMachineryModSpec() string {
-	return apiMachineryModule + "@" + apiMachineryVersion
-}
-
-func (c copier) replacementPath() string {
-	return filepath.Join(c.topPackage, c.subPath())
-}
-
-func (c copier) subPath() string {
-	return filepath.Join("internal", c.pgmName)
-}
-
-func (c copier) print() {
-	fmt.Printf("    apiMachineryModule: %s\n", apiMachineryModule)
-	fmt.Printf("     replacementPath: %s\n", c.replacementPath())
-	fmt.Printf("          goModCache: %s\n", c.goModCache)
-	fmt.Printf("          topPackage: %s\n", c.topPackage)
-	fmt.Printf("             subPath: %s\n", c.subPath())
-	fmt.Printf("              srcDir: %s\n", c.srcDir)
-	fmt.Printf("  apiMachineryModSpec: %s\n", c.apiMachineryModSpec())
-	fmt.Printf("             pgmName: %s\n", c.pgmName)
-	fmt.Printf("                 pwd: %s\n", os.Getenv("PWD"))
-}
-
-func newCopier() copier {
-	tmp := copier{
-		pgmName:    os.Getenv("GOPACKAGE"),
-		goModCache: runGetOutputCommand("go", "env", "GOMODCACHE"),
-	}
-	goMod := runGetOutputCommand("go", "env", "GOMOD")
-	topPackage := filepath.Join(goMod[:len(goMod)-len("go.mod")-1], "yaml")
-	k := strings.Index(topPackage, sigsK8sIo)
-	if k < 1 {
-		log.Fatalf("cannot find %s in %s", sigsK8sIo, topPackage)
-	}
-	tmp.srcDir = topPackage[:k-1]
-	tmp.topPackage = topPackage[k:]
-	return tmp
-}
-
-func (c copier) copyFile(dir, name string) error {
-	inFile, err := os.Open(
-		filepath.Join(c.goModCache, c.apiMachineryModSpec(), dir, name))
-	if err != nil {
-		return err
-	}
-	defer inFile.Close()
-	scanner := bufio.NewScanner(inFile)
-
-	w, err := newWriter(dir, name)
-	if err != nil {
-		return err
-	}
-	defer w.close()
-
-	w.write(
-		fmt.Sprintf(
-			// This particular phrasing is required.
-			"// Code generated by %s/generator from %s; DO NOT EDIT.",
-			c.pgmName, c.apiMachineryModSpec()))
-	w.write(
-		fmt.Sprintf(
-			"// Copied from %s\n",
-			filepath.Join(c.apiMachineryModSpec(), dir, name)))
-
-	for scanner.Scan() {
-		l := scanner.Text()
-		// Disallow recursive generation.
-		if strings.HasPrefix(l, "//go:generate") {
-			continue
-		}
-		// Don't want it to appear double generated.
-		if strings.HasPrefix(l, "// Code generated") {
-			continue
-		}
-		// Fix self-imports.
-		l = strings.Replace(l, apiMachineryModule, c.replacementPath(), 1)
-		// Replace klog with generic log (eschewing k8s.io entirely).
-		l = strings.Replace(l, "\"k8s.io/klog\"", "\"log\"", 1)
-		l = strings.Replace(l, "klog.V(10).Infof(", "log.Printf(", 1)
-		w.write(l)
-	}
-	if err := scanner.Err(); err != nil {
-		return err
-	}
-	w.write("")
-	return nil
-}
-
-type writer struct {
-	root string
-	f    *os.File
-}
-
-func newWriter(toDir, name string) (*writer, error) {
-	if err := os.MkdirAll(toDir, 0755); err != nil {
-		log.Printf("unable to create directory: %s", toDir)
-		return nil, err
-	}
-	n := filepath.Join(toDir, name)
-	f, err := os.Create(n)
-	if err != nil {
-		return nil, fmt.Errorf("unable to create `%s`; %v", n, err)
-	}
-	return &writer{root: toDir, f: f}, nil
-}
-
-func (w *writer) close() {
-	w.f.Close()
-}
-
-func (w *writer) write(line string) {
-	if _, err := w.f.WriteString(line + "\n"); err != nil {
-		log.Printf("Trouble writing: %s", line)
-		log.Fatalf("Error: %s", err)
-	}
-}
-
-func runNoOutputCommand(n string, args ...string) {
-	o := runGetOutputCommand(n, args...)
-	if len(o) > 0 {
-		log.Fatalf("unexpected output: %q", o)
-	}
-}
-
-func runGetOutputCommand(n string, args ...string) string {
-	cmd := exec.Command(n, args...)
-	var outBuf bytes.Buffer
-	cmd.Stdout = &outBuf
-	var errBuf bytes.Buffer
-	cmd.Stderr = &errBuf
-	if err := cmd.Run(); err != nil {
-		fmt.Printf("err: %q\n", errBuf.String())
-		log.Fatal(err)
-	}
-	return strings.TrimSpace(outBuf.String())
-}
diff --git a/kyaml/yaml/internal/k8sgen/k8scopy.yaml b/kyaml/yaml/internal/k8sgen/k8scopy.yaml
new file mode 100644
index 000000000..09cb08cc3
--- /dev/null
+++ b/kyaml/yaml/internal/k8sgen/k8scopy.yaml
@@ -0,0 +1,30 @@
+# Copyright 2020 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+#
+# The files to vendor (copy).
+# See {repo}/cmd/k8scopy/main.go for more info.
+module: k8s.io/apimachinery
+version: v0.17.0
+packages:
+- name: pkg/labels
+  files:
+  - labels.go
+  - selector.go
+  - zz_generated.deepcopy.go
+- name: pkg/selection
+  files:
+  - operator.go
+- name: pkg/util/sets
+  files:
+  - empty.go
+  - string.go
+- name: pkg/util/errors
+  files:
+  - errors.go
+- name: pkg/util/validation
+  files:
+  - validation.go
+- name: pkg/util/validation/field
+  files:
+  - errors.go
+  - path.go