Repository: helm/helm (go)

Issue:
Remove ClientOptResolver from OCI Client for Helm V4

Output of `helm version`:
```
version.BuildInfo{Version:"v3.16+unreleased", GitCommit:"1dff54498f9368e816147cd53d1a729b2a993e36", GitTreeState:"dirty", GoVersion:"go1.23.4"}
```

Remove ClietOptResolver from OCI client for Helm v4




Pull request description:
Remove ClientOptResolver from OCI Client
**What this PR does / why we need it**:

This option was kept to avoid compile-time incompatibilities in Helm v3 when upgrading to ORAS v2. Let's remove it for Helm v4.

Fixes #13593.

**Special notes for your reviewer**:

This is a breaking change. Not sure if there's a list of breaking changes that needs to be updated.

This allows Helm to drop the containerd dependency entirely.

**If applicable**:
- [ ] this PR contains user facing changes (the `docs needed` label should be applied if so)
- [ ] this PR contains unit tests
- [ ] this PR has been tested for backwards compatibility


Patch:
diff --git a/go.mod b/go.mod
index 723cfc769..0589b84e9 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,6 @@ require (
 	github.com/Masterminds/squirrel v1.5.4
 	github.com/Masterminds/vcs v1.13.3
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2
-	github.com/containerd/containerd v1.7.27
 	github.com/cyphar/filepath-securejoin v0.4.1
 	github.com/distribution/distribution/v3 v3.0.0-rc.3
 	github.com/evanphx/json-patch v5.9.11+incompatible
@@ -60,9 +59,6 @@ require (
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/chai2010/gettext-go v1.0.2 // indirect
-	github.com/containerd/errdefs v0.3.0 // indirect
-	github.com/containerd/log v0.1.0 // indirect
-	github.com/containerd/platforms v0.2.1 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.6 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
diff --git a/go.sum b/go.sum
index b0e35d8b9..20dd5c0b9 100644
--- a/go.sum
+++ b/go.sum
@@ -48,14 +48,6 @@ github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UF
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chai2010/gettext-go v1.0.2 h1:1Lwwip6Q2QGsAdl/ZKPCwTe9fe0CjlUbqj5bFNSjIRk=
 github.com/chai2010/gettext-go v1.0.2/go.mod h1:y+wnP2cHYaVj19NZhYKAwEMH2CI1gNHeQQ+5AjwawxA=
-github.com/containerd/containerd v1.7.27 h1:yFyEyojddO3MIGVER2xJLWoCIn+Up4GaHFquP7hsFII=
-github.com/containerd/containerd v1.7.27/go.mod h1:xZmPnl75Vc+BLGt4MIfu6bp+fy03gdHAn9bz+FreFR0=
-github.com/containerd/errdefs v0.3.0 h1:FSZgGOeK4yuT/+DnF07/Olde/q4KBoMsaamhXxIMDp4=
-github.com/containerd/errdefs v0.3.0/go.mod h1:+YBYIdtsnF4Iw6nWZhJcqGSg/dwvV7tyJ/kCkyJ2k+M=
-github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
-github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
-github.com/containerd/platforms v0.2.1 h1:zvwtM3rz2YHPQsF2CHYM8+KtB5dvhISiXh5ZpSBQv6A=
-github.com/containerd/platforms v0.2.1/go.mod h1:XHCb+2/hzowdiut9rkudds9bE5yJ7npe7dG/wG+uFPw=
 github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/cpuguy83/go-md2man/v2 v2.0.6 h1:XJtiaUW6dEEqVuZiMTn1ldk455QWwEIsMIJlo5vtkx0=
diff --git a/pkg/registry/client.go b/pkg/registry/client.go
index ecc7a0d04..2078ecd75 100644
--- a/pkg/registry/client.go
+++ b/pkg/registry/client.go
@@ -31,7 +31,6 @@ import (
 	"sync"
 
 	"github.com/Masterminds/semver/v3"
-	"github.com/containerd/containerd/remotes"
 	"github.com/opencontainers/image-spec/specs-go"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
@@ -56,8 +55,6 @@ storing semantic versions, Helm adopts the convention of changing plus (+) to
 an underscore (_) in chart version tags when pushing to a registry and back to
 a plus (+) when pulling from a registry.`
 
-var errDeprecatedRemote = errors.New("providing github.com/containerd/containerd/remotes.Resolver via ClientOptResolver is no longer suported")
-
 type (
 	// RemoteClient shadows the ORAS remote.Client interface
 	// (hiding the ORAS type from Helm client visibility)
@@ -231,12 +228,6 @@ func ClientOptPlainHTTP() ClientOption {
 	}
 }
 
-func ClientOptResolver(_ remotes.Resolver) ClientOption {
-	return func(c *Client) {
-		c.err = errDeprecatedRemote
-	}
-}
-
 type (
 	// LoginOption allows specifying various settings on login
 	LoginOption func(*loginOperation)


Test patch:
diff --git a/pkg/registry/client_test.go b/pkg/registry/client_test.go
deleted file mode 100644
index 4c5a78849..000000000
--- a/pkg/registry/client_test.go
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
-Copyright The Helm Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package registry
-
-import (
-	"testing"
-
-	"github.com/containerd/containerd/remotes"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestNewClientResolverNotSupported(t *testing.T) {
-	var r remotes.Resolver
-
-	client, err := NewClient(ClientOptResolver(r))
-	require.Equal(t, err, errDeprecatedRemote)
-	assert.Nil(t, client)
-}