use fmt and errors pkgs for installer plugin files

Signed-off-by: James Sheppard <jgsheppa@protonmail.com>

pkg/plugin/installer/http_installer.go

@@ -19,6 +19,7 @@ import (
 	"archive/tar"
 	"bytes"
 	"compress/gzip"
+	"fmt"
 	"io"
 	"os"
 	"path"
@@ -78,7 +79,7 @@ func NewExtractor(source string) (Extractor, error) {
 			return extractor, nil
 		}
 	}
-	return nil, errors.Errorf("no extractor implemented yet for %s", source)
+	return nil, fmt.Errorf("no extractor implemented yet for %s", source)
 }
 
 // NewHTTPInstaller creates a new HttpInstaller.
@@ -151,7 +152,7 @@ func (i *HTTPInstaller) Install() error {
 // Update updates a local repository
 // Not implemented for now since tarball most likely will be packaged by version
 func (i *HTTPInstaller) Update() error {
-	return errors.Errorf("method Update() not implemented for HttpInstaller")
+	return fmt.Errorf("method Update() not implemented for HttpInstaller")
 }
 
 // Path is overridden because we want to join on the plugin name not the file name
@@ -261,7 +262,7 @@ func (g *TarGzExtractor) Extract(buffer *bytes.Buffer, targetDir string) error {
 		case tar.TypeXGlobalHeader, tar.TypeXHeader:
 			continue
 		default:
-			return errors.Errorf("unknown type: %b in %s", header.Typeflag, header.Name)
+			return fmt.Errorf("unknown type: %b in %s", header.Typeflag, header.Name)
 		}
 	}
 	return nil

pkg/plugin/installer/http_installer_test.go

@@ -29,8 +29,6 @@ import (
 	"syscall"
 	"testing"
 
-	"github.com/pkg/errors"
-
 	"helm.sh/helm/v3/internal/test/ensure"
 	"helm.sh/helm/v3/pkg/getter"
 	"helm.sh/helm/v3/pkg/helmpath"
@@ -150,7 +148,7 @@ func TestHTTPInstallerNonExistentVersion(t *testing.T) {
 
 	// inject fake http client responding with error
 	httpInstaller.getter = &TestHTTPGetter{
-		MockError: errors.Errorf("failed to download plugin for some reason"),
+		MockError: fmt.Errorf("failed to download plugin for some reason"),
 	}
 
 	// attempt to install the plugin

pkg/plugin/installer/installer.go

@@ -16,6 +16,7 @@ limitations under the License.
 package installer
 
 import (
+	"errors"
 	"fmt"
 	"log"
 	"net/http"
@@ -23,8 +24,6 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/pkg/errors"
-
 	"helm.sh/helm/v3/pkg/plugin"
 )
 

pkg/plugin/installer/vcs_installer.go

@@ -16,12 +16,13 @@ limitations under the License.
 package installer // import "helm.sh/helm/v3/pkg/plugin/installer"
 
 import (
+	"errors"
+	"fmt"
 	"os"
 	"sort"
 
 	"github.com/Masterminds/semver/v3"
 	"github.com/Masterminds/vcs"
-	"github.com/pkg/errors"
 
 	"helm.sh/helm/v3/internal/third_party/dep/fs"
 	"helm.sh/helm/v3/pkg/helmpath"
@@ -144,7 +145,7 @@ func (i *VCSInstaller) solveVersion(repo vcs.Repo) (string, error) {
 		}
 	}
 
-	return "", errors.Errorf("requested version %q does not exist for plugin %q", i.Version, i.Repo.Remote())
+	return "", fmt.Errorf("requested version %q does not exist for plugin %q", i.Version, i.Repo.Remote())
 }
 
 // setVersion attempts to checkout the version